A strong motorcycle exhaust silencer should match your pipe’s measured inlet, reduce exhaust noise in the form you need, and suit your installation plans. Riders seeking a removable insert can start with LKV 51mm DB Killer: it is a stainless-steel 2-inch baffle made for many motorcycle exhausts. This lineup also includes smaller and multi-size inserts, plus complete slip-on mufflers with removable DB killers.
Those are not interchangeable choices: an insert targets an existing exhaust, while a slip-on replaces or extends the muffler assembly. Check the listed connection size before buying, because “universal” does not mean every pipe fits.
The products offer different materials, connection ranges, and included hardware, so the best choice depends on your exhaust dimensions and whether you want a baffle or a complete muffler.
LKV 51mm DB Killer is the leading choice for a rider seeking a removable silencer insert for a 2-inch motorcycle exhaust. Its listed 51 mm / 2-inch fit, stainless-steel construction, and stated noise-reduction function make its use case clear, and it names a wide range of motorcycle types and makes. Confirm that your exhaust’s actual inlet accepts a 51 mm insert before ordering.
If your pipe is a different size, choose a matching option rather than relying on the universal-fit wording.
Our Top Picks
Best OverallA removable stainless-steel insert explicitly sized for 51 mm / 2-inch exhausts, with stated noise reduction and broad motorcycle fitment examples.
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Best Included HardwareThis 51 mm removable stainless-steel baffle targets motorcycles and off-road vehicles, and includes two springs and four U-hooks.
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Best Simple InsertA stainless-steel DB-killer insert with 2-inch inlet and outlet connection sizes, directly suited to a matching exhaust pipe.
View on Amazon- Best Perforated Design nvojeaf 51mm DB Killer
- Best 35mm Fit amavoler 35mm Silencer
Compare motorcycle exhaust silencer options
| # | Product | Material | Compatible with Vehicle Type | Inlet Connection Size | Buy |
|---|---|---|---|---|---|
| 1 | 1. LKV 51mm DB KillerBest Overall | Stainless Steel | Motorcycle | 2 in | View on Amazon |
| 2 | 2. ZSDTRP 51mm BaffleBest Included Hardware | Stainless Steel | — | — | View on Amazon |
| 3 | 3. CHANGCHENG 2-Inch BaffleBest Simple Insert | Stainless Steel | Motorcycle | 2 in | View on Amazon |
| 4 | 4. RIDLOG 51mm DB KillerCoated stainless 2-inch insert | Stainless Steel | Motorcycle | — | View on Amazon |
| 5 | 5. nvojeaf 51mm DB KillerBest Perforated Design | — | — | — | View on Amazon |
| 6 | 6. ekurfos 51mm DB KillerPerforated smooth-note insert | — | — | — | View on Amazon |
| 7 | 7. amavoler 35mm SilencerBest 35mm Fit | Aluminum | Motorcycle | 35 millimeters | View on Amazon |
| 8 | 8. Wevdn Exhaust SilencerStainless multi-size insert | — | Vehicle | — | View on Amazon |
| 9 | 9. PACEWALKER Slip-On MufflerAdaptable slip-on muffler | Aluminum, Stainless Steel | ATV, Dirt Bike, Motorcycle, Scooter | 1.5 in | View on Amazon |
| 10 | 10. LEIMO KPARTS Slip-On38–51mm carbon-finish slip-on | Aluminum, Stainless Steel | Bike,Motorcycle,Dirt Bike,Scooter,Atv,Scooters | 1.5 in | View on Amazon |
Detailed Reviews: Best Silencer For Motorcycle Exhaust

#1 · Best Overall
1. LKV 51mm DB Killer
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
- Inlet Connection Size: 2 in
Best for: 51mm stainless insert.
Why it ranks #1: A removable stainless-steel insert explicitly sized for 51 mm / 2-inch exhausts, with stated noise reduction and broad motorcycle fitment examples.
A 51mm, or 2-inch, inlet connection anchors the LKV DB killer to a clearly stated exhaust size, while its removable insert format makes it a targeted noise-control option. The listing names a broad range of motorcycle types, including cruisers and scooters, for riders seeking a baffle rather than a full muffler assembly.
The 2-inch inlet specification gives buyers a concrete measurement to compare with the exhaust opening, and the removable construction allows the insert to be removed when the setup changes. LKV states that the baffle reduces sound levels from louder exhaust systems, which suits riders seeking quieter operation without replacing the whole system. Stainless steel construction is identified for durability, while the listed compatibility examples span brands such as Honda, Kawasaki, Suzuki, and Yamaha; the connection measurement remains the decisive fit check.
- 2-inch inlet connection specified
- Removable DB killer
- Stainless steel construction
- Listed for motorcycles, cruisers, and scooters
- The 2-inch connection makes this a poor match for exhaust openings of other diameters.
Skip it if you need a complete muffler or a 38–51mm slip-on; PACEWALKER's 365mm assembly includes a 38–51mm adaptor.
This LKV insert suits riders with a matching 2-inch motorcycle exhaust who want a removable stainless-steel noise-control baffle. Its stated fit is centered on that connection size, so it is not the choice for a different-diameter opening.
Full product details
| Brand | LKV |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Included Components | Not included |
| Inlet Connection Size | 2 inches |
| Item Weight | 0.23 kg |
| Manufacturer | LKV |
| Part Number | Motorcycle Exhaust |
| Manufacturer Warranty Description | Manufacturer warranty for 90 days from date of purchase |
| Material | Stainless Steel |
| Model Number | 12EPS |
| Outlet Connection Size | 5.1 centimeters |
Listed on Amazon as: Universal 51mm (2 Inch) Motorcycle DB Killer Exhaust Baffle Silencer
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#2 · Best Included Hardware
2. ZSDTRP 51mm Baffle
- Material: Stainless Steel
Best for: Multi-vehicle 51mm baffle.
Why it ranks #2: This 51 mm removable stainless-steel baffle targets motorcycles and off-road vehicles, and includes two springs and four U-hooks.
A removable 51mm DB killer intended for motorcycles, ATVs, UTVs, and go-karts gives the ZSDTRP insert a wider listed vehicle scope than a motorcycle-only baffle. Stainless steel construction and included springs and U-hooks make it a supplied-hardware option for riders seeking noise reduction across those vehicle types.
The 51mm/2-inch size provides the stated connection reference for buyers comparing the baffle with an exhaust opening. Its removable design supports changing the noise-control setup, and the listing describes significant reduction of unwanted sound while maintaining performance. Compatibility is explicitly extended to motorcycles, ATVs, UTVs, and go-karts, which broadens its stated use beyond motorcycles. The package includes two springs and four U-hooks alongside the baffle, giving buyers those listed components for the installation workflow without implying other hardware is supplied.
- 51mm/2-inch size stated
- Removable DB killer
- Listed for motorcycles, ATVs, UTVs, and go-karts
- Includes two springs and four U-hooks
- The stated 51mm size limits fit to exhaust openings matching that measurement.
Skip it if you want a complete slip-on muffler for a 38–51mm pipe; PACEWALKER includes a body, clamp, and adaptor.
This ZSDTRP baffle suits owners of a matching 51mm exhaust on a motorcycle or listed off-road vehicle who want a removable noise-control insert. Its specified diameter is the fit boundary, and it is not a complete muffler.
Full product details
| Brand | ZSDTRP |
|---|---|
| Included Components | 1xExhaust Baffle,2xsprings, 4xU hooks |
| Item Dimensions | 10 x 2 x 50 inches |
| Dimensions | 10 x 2 x 50 inches |
| Manufacturer | ZSDTRP |
| Part Number | SCL-2017090010-508-ZH7-1 |
| Manufacturer Warranty Description | 90 days |
| Material | Stainless Steel |
| Model Number | SCL-2017090010-508-ZH7-1 |
Listed on Amazon as: Exhaust Baffle DB Killer 51mm/2inch,Universal Exhaust Silencer Insert Noise Reduction Only for Motorcycle ATV UTV Go Kart (H-51mm)
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#3 · Best Simple Insert
3. CHANGCHENG 2-Inch Baffle
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
- Inlet Connection Size: 2 in
Best for: Simple 2-inch baffle.
Why it ranks #3: A stainless-steel DB-killer insert with 2-inch inlet and outlet connection sizes, directly suited to a matching exhaust pipe.
A stated 2-inch size makes the CHANGCHENG exhaust baffle easy to evaluate against an exhaust opening before installation. Its stainless-steel construction and described easy installation suit riders looking for a straightforward DB-killer insert, while the listing identifies motorcycle use and noise reduction rather than a complete replacement muffler.
The 2-inch inlet and outlet specifications give a buyer two concrete dimensions to compare with the exhaust arrangement, helping assess whether this insert suits the intended pipe. CHANGCHENG describes installation as easy, making the baffle a direct option for riders who want an insert rather than a full slip-on assembly. Stainless steel is the stated material, and the product is identified for motorcycle use. The listing provides no additional installation hardware details, so the stated dimensions are especially important when assessing the setup.
- 2-inch inlet specified
- 2-inch outlet specified
- Stainless steel material
- Described as easy to install
- The listing specifies a 2-inch size, limiting suitability for other pipe diameters.
Skip it if you want a full slip-on muffler spanning 38–51mm; the PACEWALKER assembly includes a matching adaptor and housing.
Pick this CHANGCHENG baffle if your motorcycle exhaust arrangement matches its 2-inch inlet and outlet and you want a simple insert. Its clearly stated dimensions define the fit boundary; it is not presented as a complete muffler.
Full product details
| Brand | CHANGCHENG |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Inlet Connection Size | 2 inches |
| Item Weight | 0.18 kg |
| Part Number | EG171300321 |
| Material | Stainless Steel |
| Model Number | EG171300321 |
| Outlet Connection Size | 2 inches |
Listed on Amazon as: 1PCS Exhaust Baffle Silencer DB Killer Muffler Fit for 2 inch Exhaust Pipe
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#4
4. RIDLOG 51mm DB Killer
- Material: Stainless Steel
- Compatible with Vehicle Type: Motorcycle
Best for: Coated stainless 2-inch insert.
Why it ranks #4: The removable stainless-steel insert is listed for most motorcycles with 51 mm / 2-inch exhausts and has a high-temperature-resistant surface coating.
A high-temperature-resistant coating over stainless steel is the RIDLOG DB killer’s distinguishing material detail, paired with a stated 51mm/2-inch fit for many motorcycles. The removable baffle is aimed at riders seeking a motorcycle exhaust insert, with fit examples spanning cruisers, scooters, and major motorcycle brands.
The 51mm/2-inch size gives buyers a direct measurement for checking an exhaust opening, while the removable insert format allows the baffle to be taken out rather than replacing the full system. RIDLOG lists compatibility examples including Harley, Honda, Kawasaki, Suzuki, Yamaha, cruisers, scooters, and Victory, but the diameter remains the practical fit criterion. Stainless steel with a high-temperature-resistant coating is described as corrosion- and rust-resistant, a relevant material claim for an exhaust component exposed to heat and the elements.
- 51mm/2-inch size specified
- Removable exhaust insert
- Stainless steel construction
- High-temperature-resistant coating described
- The 51mm/2-inch fit specification excludes exhaust openings of other diameters.
Skip it if you need a 38–51mm complete slip-on muffler; PACEWALKER supplies a muffler body with an adaptor and clamp.
RIDLOG is a focused option for motorcycle owners with a matching 51mm opening who want a removable stainless-steel baffle. Its listed brand examples are broad, but the connection diameter remains the decisive boundary for fit.
Full product details
| Brand | RIDLOG |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Item Weight | 0.12 kg |
| Manufacturer | RIDLOG |
| Part Number | RIDLIOG |
| Material | Stainless Steel |
| Model Number | 12EPS006-UN999-SIP-QJ |
Listed on Amazon as: Motorcycle 51mm DB Killer Universal Exhaust Baffle Silencer
View on AmazonWhy it ranks #5: A 51 mm stainless-steel insert uses a perforated structure for noise reduction and includes a stated backpressure design for low-speed response.
A perforated structure paired with a built-in backpressure design gives this 51mm nvojeaf DB killer two stated jobs: softening sharp exhaust notes and supporting low-speed torque. That combination speaks to riders who want a noise-reducing insert while retaining a more responsive feel at takeoff, rather than merely adding a plain tube to the exhaust.
The porous structure alters airflow and reduces exhaust velocity, which the listing connects to dampened sharp exhaust notes and a more comfortable ride. Its built-in backpressure design is described as regulating exhaust backpressure to enhance low-engine-speed torque, supporting response during starts and acceleration. The 51mm size supplies a specific fit reference, while stainless steel construction is described as heat-resistant and rust-proof. This is a removable baffle accessory, so buyers should assess the exhaust opening before choosing it rather than treating it as a universal complete muffler.
- 51mm size identified
- Perforated noise-reducing structure
- Backpressure design targets low-speed torque
- Stainless steel described as heat-resistant and rust-proof
- The listed 51mm size limits fit to exhausts with a matching opening.
Skip it if you need a 38–51mm slip-on muffler assembly; PACEWALKER's unit includes a 38–51mm adaptor and mounting clamp.
This nvojeaf insert fits riders seeking a 51mm perforated baffle with stated noise and low-speed torque benefits. The key boundary is its insert format and specified diameter; it is not the broader-diameter slip-on assembly some setups require.
Full product details
| Brand | nvojeaf |
|---|---|
| Included Components | Comes with housing |
| Manufacturer | nvojeaf |
| Part Number | NVOMPN4 |
| Manufacturer Warranty Description | Manufacturer warranty for 30 days from date of purchase |
| Model Number | NVOXSQ2090SI-51-1PC |
Listed on Amazon as: 51 mm Motorcycle DB Killer, Stainless Steel Exhaust Pipe Muffler Silencer Baffle, Removable Perforated Noise Eliminator, Modification Accessory for Most Motorcycles Scooters (Silver)
View on AmazonWhy it ranks #6: Its removable 51 mm stainless-steel baffle has a perforated airflow design intended to reduce noise and support low-to-mid-range response.
A perforated airflow path and backpressure design define the ekurfos 51mm DB killer, with the listing linking them to a smoother, deeper note and better low-to-midrange power response. It is a focused choice for riders seeking those stated effects from a removable noise-eliminating baffle rather than a complete muffler assembly.
The perforated structure channels and disperses airflow while reducing exhaust velocity, which the product description associates with less noise and a deeper, smoother exhaust note. Its backpressure design is described as minimizing low-end torque loss and improving power response at low to mid-range speeds, giving the insert a performance-related purpose alongside sound control. Stainless steel is identified as the material, with heat resistance noted in the description. The 51mm title specification provides the key dimension buyers should compare with the exhaust opening.
- 51mm size stated
- Perforated airflow structure
- Backpressure design targets low-to-midrange response
- Stainless steel construction with heat resistance stated
- The listed 51mm size limits fit to exhaust openings matching that diameter.
Skip it if you need a complete 38–51mm muffler with a clamp; PACEWALKER provides a slip-on assembly and adaptor.
The ekurfos insert suits riders with a matching 51mm exhaust who want a perforated baffle targeting both sound and low-to-midrange response. Its listing describes an insert, so buyers seeking a complete slip-on muffler should look elsewhere.
Full product details
| Brand | ekurfos |
|---|---|
| Item Weight | 1 ounces |
| Item model number | EKUXSQ2090SI-51-1PC |
| Manufacturer | ekurfos |
| Part Number | EKUMPN3 |
| Model | EKUXSQ2090SI-51-1PC |
| Package Dimensions | 0.04 x 0.04 x 0.04 inches |
Listed on Amazon as: 51 mm Motorcycle DB Killer, Stainless Steel Heat Resistent Turbo Exhaust Muffler, Perforated Removable Noise Eliminator, Modification Silencer Baffle for Motorcycles Scooters (Silver)
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#7 · Best 35mm Fit
7. amavoler 35mm Silencer
- Material: Aluminum
- Compatible with Vehicle Type: Motorcycle
- Inlet Connection Size: 35 millimeters
Best for: 35mm insert buyers.
Why it ranks #7: A removable universal motorcycle silencer is available with a 35 mm inlet connection, making it a size-specific option for smaller pipes.
A 35mm inlet connection gives this amavoler removable silencer a concrete fit dimension for riders choosing an insert for a motorcycle exhaust. Its stated noise-reduction function makes it relevant when the priority is moderating exhaust sound, while the removable format lets the insert be taken out rather than treated as a permanent muffler replacement.
The 35mm inlet connection is the key fit specification, so measure the receiving exhaust opening against that dimension before selecting this version. The removable design gives riders the option to take the silencer out when they want to change the exhaust setup. The listing identifies motorcycle compatibility and noise reduction as its purpose, making it a focused insert rather than a complete slip-on muffler. Multiple sizes and two classic colors are offered, but this listing is identified as silver-35mm.
- Removable silencer insert
- 35mm inlet connection specified
- Listed for motorcycles
- Noise-reduction function stated
- The listed 35mm inlet limits this version to exhausts matching that connection size.
Skip it if you need a complete slip-on muffler or an inlet larger than 35mm; the PACEWALKER 365mm muffler includes a 38–51mm adaptor.
Choose this amavoler insert if your motorcycle exhaust has a matching 35mm connection and you want a removable noise-reducing baffle. It is not a complete muffler, and the specified inlet size is the essential fit boundary.
Full product details
| Brand | amavoler |
|---|---|
| Compatible with Vehicle Type | Motorcycle |
| Included Components | powersports-mufflers |
| Inlet Connection Size | 35 millimeters |
| Manufacturer | amavoler |
| Part Number | 097 |
| Material | Aluminum |
| Model Number | Motorcycle Exhaust Silencer |
Listed on Amazon as: Motorcycle Exhaust Silencer Motorbike Muffler Insert Baffle Silencer Universal (silver-35mm)
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#8
8. Wevdn Exhaust Silencer
- Compatible with Vehicle Type: Vehicle
Best for: Stainless multi-size insert.
Why it ranks #8: This stainless-steel motorcycle silencer is offered in 35, 42, 45, 48, and 60 mm styles, but confirm which size variant is selected.
Stainless steel throughout is the defining material claim for the Wevdn exhaust silencer, with the listing specifically linking it to corrosion resistance and tolerance of exhaust heat. Its available 35mm, 42mm, 45mm, 48mm, and 60mm styles give buyers several stated size choices for a motorcycle silencer insert.
The listed size choices—35mm, 42mm, 45mm, 48mm, and 60mm—let a buyer select among several versions, rather than being limited to one stated dimension. The listing describes noise attenuation during acceleration, making the silencer relevant when exhaust sound is the concern. Stainless steel is said to resist corrosion and withstand high exhaust temperatures, which relates directly to the hot, exposed installation location. It is described as a universal-fit accessory, but the selected size still needs to correspond to the intended exhaust opening.
- Stainless steel construction
- Five listed size options
- Noise attenuation during acceleration stated
- Material described as heat- and corrosion-resistant
- The listing presents several size variants, so the selected version must match the exhaust opening.
Skip it if you want a full 38–51mm slip-on muffler with a removable DB killer; LEIMO KPARTS lists that assembly range.
Consider Wevdn if you want a stainless silencer insert and can choose the size matching your exhaust. Its stated heat and corrosion resistance suits the exhaust location, but the multiple variants make selecting the correct dimension essential.
Full product details
| Brand | Wevdn |
|---|---|
| Compatible with Vehicle Type | Vehicle |
| Included Components | Motorcycle Exhaust Silencer |
| Manufacturer | Wevdn |
| Part Number | Wevdn-3168ME |
| Manufacturer Warranty Description | 0.2 |
| Model Number | Motorcycle Exhaust Silencer |
Listed on Amazon as: Wevdn Motorcycle Exhaust Silencer, Stainless Steel Motorcycle Exhaust Muffler Insert, Exhaust Muffler Assembly Turbo Sound Muffler for Motorbike, Universal Motorcycle Accessories (60mm)
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#9
9. PACEWALKER Slip-On Muffler
- Material: Aluminum, Stainless Steel
- Compatible with Vehicle Type: ATV, Dirt Bike, Motorcycle, Scooter
- Inlet Connection Size: 1.5 in
Best for: Adaptable slip-on muffler.
Why it ranks #9: A complete 365 mm slip-on muffler has a removable DB killer, 51 mm connection, 38–51 mm adaptor, and included mounting clamp.
A 365mm slip-on body with a 38–51mm adaptor makes the PACEWALKER a complete muffler option for riders whose exhaust dimensions vary within that range. Unlike a bare baffle, it includes a removable DB killer, allowing a change in sound character while its stated sound profile is deep and not terribly loud.
The 51mm slip-on connection and included 38–51mm adaptor give this assembly a stated route to fit exhaust pipes within that diameter range. Its 365mm overall length helps buyers account for the space a complete muffler occupies, while the mounting clamp supports attachment. The removable DB killer changes the sound effect, and the listed deep, slightly throaty sound offers a specific expectation without claiming silence. Aluminum body construction with a stainless-steel connector distinguishes its materials from an all-steel insert.
- Complete 365mm slip-on muffler
- Includes 38–51mm adaptor
- Removable DB killer
- Mounting clamp included
- At 365mm long, the complete muffler requires more installation space than a compact insert.
Skip it if you only need a compact 51mm baffle insert; the LKV DB killer is a removable insert rather than a 365mm muffler assembly.
Choose PACEWALKER if you need a complete slip-on for a street or sport motorcycle or scooter with a 38–51mm pipe. Account for its 365mm length and confirm the adaptor range matches the intended installation.
Full product details
| Brand | PACEWALKER |
|---|---|
| Compatible with Vehicle Type | ATV, Dirt Bike, Motorcycle, Scooter |
| Included Components | Comes with housing |
| Inlet Connection Size | 1.5 inches |
| Item Dimensions | 5.91 x 4.72 x 23.62 inches |
| Dimensions | 5.91 x 4.72 x 23.62 inches |
| Manufacturer | PACEWALKER |
| Part Number | 1 |
| Manufacturer Warranty Description | 1 |
| Material | Aluminum, Stainless Steel |
| Model Number | 1 |
| Outlet Connection Size | 5.1 centimeters |
Listed on Amazon as: PACEWALKER Motorcycle Exhaust Muffler Carbon Fiber 1.5-2" Inlet
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#10
10. LEIMO KPARTS Slip-On
- Material: Aluminum, Stainless Steel
- Compatible with Vehicle Type: Bike,Motorcycle,Dirt Bike,Scooter,Atv,Scooters
- Inlet Connection Size: 1.5 in
Best for: 38–51mm carbon-finish slip-on.
Why it ranks #10: This is a full aluminum-and-stainless slip-on with removable DB killer and 38–51 mm fit range, rather than a standalone silencer insert.
A universal 38–51mm fit range and removable DB killer make the LEIMO KPARTS a complete slip-on option with some setup flexibility. Its aluminum-and-stainless-steel construction carries a carbon-fiber finish, while the listing names dirt bikes, street bikes, scooters, and ATVs among compatible vehicle styles.
The stated 38–51mm diameter range gives buyers a broad measurement window for comparing the muffler with their pipe, and its slip-on format distinguishes it from a standalone insert. The removable DB killer allows a different sound effect when removed, according to the listing. Aluminum and stainless steel are the specified materials, with corrosion and rust resistance stated; the carbon-fiber finish provides the described appearance. Its listed vehicle types include dirt bikes, street bikes, scooters, and ATVs, while the pipe diameter remains central to fit.
- 38–51mm fit range stated
- Slip-on muffler format
- Removable DB killer
- Aluminum and stainless-steel construction
- The 38–51mm range does not cover exhaust pipes outside that stated diameter window.
Skip it if you only need a 51mm insert and not a full muffler; RIDLOG offers a removable stainless-steel DB killer for that size.
Choose LEIMO KPARTS if you want a slip-on muffler for a listed bike or ATV style and your pipe falls within 38–51mm. Its removable DB killer adds sound flexibility, but pipes outside that range are beyond its stated fit.
Full product details
| Brand | LEIMO KPARTS |
|---|---|
| Compatible with Vehicle Type | Bike,Motorcycle,Dirt Bike,Scooter,Atv,Scooters |
| Inlet Connection Size | 1.5 inches |
| Item Weight | 1.37 kg |
| Manufacturer | LEIMO |
| Part Number | EM-3851 |
| Material | Aluminum, Stainless Steel |
| Model Number | CF-SO-UNI-365 |
| Outlet Connection Size | 5.1 centimeters |
Listed on Amazon as: Motorcycle Slip On Muffler,1.5-2" Carbon Fiber Unversal Slip on Silencers
View on AmazonAvoid the insert-versus-slip-on mismatch
Choose an insert for an existing muffler only when its inner opening matches the insert’s stated connection size; a complete slip-on is a different installation. LKV 51mm DB Killer, CHANGCHENG 2-Inch Baffle, and the other 51 mm listings are baffle-style products, while PACEWALKER Slip-On Muffler and LEIMO KPARTS Slip-On are complete mufflers with removable DB killers. Buying a slip-on when you only need a baffle can mean extra fitment work; buying an insert when you need to replace the muffler will not solve that problem.
Be especially careful with products described as universal: PACEWALKER lists a 51 mm connection plus a 38–51 mm adaptor, whereas amavoler 35mm Silencer is a 35 mm option. Treat each listed diameter as a fitment condition, not a guarantee for every motorcycle.
A quieter exhaust can involve a performance trade-off
A DB killer changes exhaust flow as well as sound, so noise reduction and engine response should be considered together. Several listings explicitly describe noise control: LKV 51mm DB Killer says it reduces sound levels, while nvojeaf 51mm DB Killer and ekurfos 51mm DB Killer describe perforated airflow and backpressure designs. Those performance statements are product descriptions, not measured results for a specific motorcycle.
A baffle that fits physically may still change how the bike responds, and the supplied listings do not provide bike-specific tuning guidance, measured decibel reductions, or test results. If you install a different insert or remove a DB killer, check the motorcycle and exhaust maker’s guidance and pay attention to changes in running behavior.
For a full replacement, PACEWALKER Slip-On Muffler and LEIMO KPARTS Slip-On include removable DB killers, giving a different configuration choice from a simple insert.
How to Choose a Motorcycle Exhaust Silencer
Match the connection diameter
Start by measuring the exhaust opening where the insert or muffler will connect, then compare that measurement with the product’s listed size. The options here include 35 mm for amavoler 35mm Silencer, 51 mm / 2 inches for LKV 51mm DB Killer and several other baffles, and 38–51 mm compatibility for the PACEWALKER and LEIMO slip-ons. Wevdn Exhaust Silencer lists several size styles, from 35 to 60 mm, so verify the selected variant rather than assuming the title’s size covers every option.
A rider with a measured 35 mm opening should favour a matching 35 mm product; someone with a confirmed 51 mm connection has more choices.
Choose an insert or a complete muffler
Decide whether you are silencing an existing muffler or replacing it, because the products cover both jobs. LKV 51mm DB Killer, CHANGCHENG 2-Inch Baffle, and RIDLOG 51mm DB Killer are inserts; PACEWALKER Slip-On Muffler and LEIMO KPARTS Slip-On are complete slip-on mufflers with removable DB killers. PACEWALKER lists a 365 mm overall length and includes a mounting clamp and 38–51 mm adaptor, details relevant to a replacement installation.
If your current muffler is sound and accepts a compatible insert, a baffle is the more directly targeted type. If you want a full muffler assembly, compare slip-on connection dimensions and supplied mounting hardware instead.
Consider construction and supplied parts
Compare listed construction and hardware according to how the part will be used. Stainless steel is specified for LKV 51mm DB Killer, CHANGCHENG 2-Inch Baffle, and ZSDTRP 51mm Baffle; PACEWALKER Slip-On Muffler combines an aluminum body with a stainless-steel connector. ZSDTRP includes two springs and four U-hooks, while PACEWALKER lists a mounting clamp and adaptor.
Hardware varies, and several insert listings do not specify included mounting pieces, so do not assume they arrive with fixings. For a basic insert replacement, material and exact fit may be the main checks.
For a slip-on installation or a setup where attachment parts matter, favour products that explicitly list the required components.
Which Motorcycle Exhaust Silencer Should You Choose?
For a removable baffle on a confirmed 51 mm / 2-inch motorcycle exhaust, choose LKV 51mm DB Killer: its stated size, stainless-steel construction, and noise-reduction purpose make it the clearest all-round match. If you need included attachment hardware for an off-road or motorcycle setup, ZSDTRP 51mm Baffle lists springs and U-hooks. For a straightforward 2-inch insert with matching inlet and outlet sizes, consider CHANGCHENG 2-Inch Baffle.
A smaller 35 mm pipe points to amavoler 35mm Silencer, while Wevdn Exhaust Silencer offers several listed size styles that require careful variant selection. If you need a complete muffler rather than an insert, compare PACEWALKER Slip-On Muffler and LEIMO KPARTS Slip-On; both list removable DB killers and 38–51 mm fitment.
Related Buying Guides
Frequently Asked Questions
How do I measure an exhaust pipe to choose the right baffle diameter?
Measure the exhaust inlet’s inside diameter, where the baffle will sit, rather than the pipe’s outside diameter. Use calipers if available, or measure carefully across the opening. Compare that measurement with the baffle’s stated diameter, and confirm how the insert is intended to fit before ordering.
Will adding a DB killer affect motorcycle performance or tuning?
It can affect exhaust flow and may change how the motorcycle runs, so the result depends on the bike and exhaust setup. After installation, check for changes in sound, throttle response, or running behavior. If the motorcycle runs poorly or needs adjustment, consult a qualified mechanic familiar with your setup.
Are removable exhaust baffles legal for street use where I ride?
Legality depends on local noise limits, vehicle rules, and whether the baffle must remain installed. A removable insert does not by itself establish that an exhaust is street-legal. Check the requirements where you ride and confirm whether the complete exhaust setup, including its sound level, is permitted.
How can I tell whether a listing is for an insert or a complete muffler?
Check the product description for its intended installation and included components. An insert or DB killer fits inside an existing exhaust, while a slip-on muffler is a larger replacement assembly. Confirm the listed inlet dimensions and whether the product includes the parts needed for your specific installation.
What should I check before installing a removable baffle?
Confirm that the baffle’s diameter matches the exhaust inlet and that its mounting method suits your setup. Follow the product’s installation instructions, secure the insert as directed, and check it before riding. If fitment or retention is uncertain, ask a qualified mechanic to inspect the installation.
Final Words
Start by measuring the exhaust inlet and choosing a matching insert; do not rely on universal-fit wording alone. For a confirmed 51 mm / 2-inch motorcycle exhaust, the LKV 51mm DB Killer is the clearest removable-insert choice. Consider ZSDTRP if you need its listed springs and U-hooks, or a matching smaller-size option for a different pipe.
Choose a slip-on only if you need a complete muffler assembly, and verify local street-use rules.




