Best Crank Set For Bike: Compare 9 Cranksets

#1 · Best Overall

1. BUCKLOS 104 BCD 30-42T

• Material: Aluminum Alloy
• Weight: 1 kg
• Package Weight: 1 kg

Best for: Hollow crankset with threaded bottom bracket.

Why it ranks #1: Its 170mm arms, 104 BCD, 30–42T narrow-wide options, 550g listed crank weight and 68–73mm bottom-bracket fit make it a versatile MTB choice.

A threaded 412424mm bottom bracket is listed with this 104 BCD BUCKLOS crankset, giving buyers a specified component for compatible 68-73mm frames. Its 170mm arms and 30T-42T round or oval chainring choices let riders select a single-ring setup while retaining broad stated chain compatibility.

The listed threaded bottom bracket fits a 68-73mm bike bottom, connecting the crankset’s installation dimensions to frame selection. A 104 BCD interface pairs with 30T through 42T narrow-wide ring options in round or oval shapes, letting riders choose gearing and ring form within the listed range. The 170mm crank arms weigh 550g, and stated compatibility with 7-12S chains and single, double, or triple chainring setups offers drivetrain planning flexibility.

Skip it if you want a crankset that lists included crank bolts; BNVB’s 170mm 104 BCD set, model B082XQRJXY, lists screws.

This suits riders seeking a 104 BCD crankset with a specified threaded bottom bracket and broad ring-size choices. Check frame width, chain range, and the fixed 170mm arm length before selecting it.

Listed on Amazon as: BUCKLOS 104 BCD 30-42T Mountain Bike Crankset Hollow Integrated 170mm

#2 · Lightest Listed

2. BUCKLOS 104 BCD 30-38T

• Material: Aluminum
• Weight: 0.99 kg
• Package Weight: 0.99 kg

Best for: Narrow-wide crankset size selectors.

Why it ranks #2: This 170mm, 104 BCD crank weighs a listed 550g and offers 30–38T round or oval narrow-wide chainrings for riders who do not need 40–42T.

A choice of 30T through 38T chainrings, including round and oval options, lets riders tailor this BUCKLOS crankset to preferred single-ring gearing. Its 170mm arms use a 104 BCD interface, and the listed chain compatibility spans 7- through 12-speed chains for varied mountain-bike setups.

The narrow-wide single-speed ring uses 4mm-thick teeth, with the listed narrow and wide tooth dimensions intended to engage the chain profile. CNC aluminum-alloy construction keeps the crank and chainring in the same lightweight material family, while the 550g crank weight gives buyers a concrete reference for a replacement. The 104 BCD pattern and 170mm arms define the mounting and length considerations; listed compatibility covers 7-12S chains and single, double, or triple configurations.

Skip it if you need a crankset supplied with a bottom bracket; BUCKLOS’s 104 BCD model B07YZKNYPW lists a threaded bottom bracket.

This fits riders choosing a 104 BCD, 170mm crankset with multiple narrow-wide ring sizes and shapes. Match the selected ring and chain compatibility to the drivetrain; the listed crank arm length remains 170mm.

Listed on Amazon as: BUCKLOS 104 BCD 30T-38T Mountain Bike Crankset, Hollow Integrated 170MM

#3 · Included Bottom Bracket

3. BNVB 104 BCD Crankset

• Material: Aluminum
• Weight: 16 oz
• Package Weight: 0.93 kg

Best for: Crankset with included bottom bracket.

Why it ranks #3: Its 170mm arms, 104mm BCD and stated 68–73mm bottom-bracket width suit many MTB setups; the listing also includes a bottom bracket and chainring bolts.

This 170mm aluminum-alloy crank set includes a bottom bracket and crank bolts, bringing key replacement components together for a compatible bike build. Its 104mm BCD and stated 68-73mm bottom-bracket width range give buyers concrete dimensions to check for MTB, BMX, or road-bike installation.

The aluminum-alloy arms are described as strong and lightweight, with the set weighing approximately 675g. A 104mm BCD and 74mm crank-related hole spacing specify the chainring interface, while the 68-73mm bottom-bracket width range helps determine frame compatibility. The listing also identifies compatibility with single, double, and triple disc 9S/10S configurations. Because a bottom bracket and crank bolts are included, the package combines parts relevant to crank installation.

Skip it if you need a stated 7-12S chain compatibility range; BUCKLOS’s 104 BCD crankset, model B07YZKNYPW, lists that range.

This suits a rider assembling or replacing a crank setup who can use the included bottom bracket and bolts. Check the 104mm BCD, 68-73mm width, and 170mm arm dimensions against the bike.

Listed on Amazon as: Bike Crank Arm Set, 170mm 104 BCD Mountain Bike Crank Set with Bottom Bracket Crank and Chainring Bolts for MTB BMX Road Bicyle, Compatible with Shimano, FSA, Gaint (Black/Red/Silver)

#4 · Small-Ring Option

4. WEEROCK 32T Crankset

• Material: Steel, Aluminium Alloy
• Weight: 1.9 lb
• Package Weight: 0.69 kg

Best for: Narrow-wide single-ring MTB option.

Why it ranks #4: The 32T steel ring and narrow-wide design suit single-ring setups, while its 170mm alloy arm is listed for single-speed and 6–11-speed bikes.

A narrow-wide chainring profile is intended to help prevent chain drop, giving this WEEROCK crankset a retention-focused setup for single-ring riding. It offers 32T, 34T, 36T, and 38T options with 170mm aluminum-alloy arms, and is listed for single-speed through 11-speed bicycles.

The steel chainring is described as high strength and durable, while the aluminum-alloy arm is lightweight and rust resistant. WEEROCK’s narrow-wide tooth design is intended to prevent the chain from dropping from the ring, helping support a single-ring setup. The product is listed for single-speed and 6- through 11-speed bikes, and the available 32T-38T sizes let buyers choose among several front-ring options while retaining the same 170mm arm length.

Skip it if you want a double-layer chain guard; CMTOTWO’s 48T/52T crankset, model B0FCFMWPTW, lists one.

This suits riders choosing a narrow-wide single crank for a compatible MTB or bicycle with a single-speed through 11-speed setup. Select among the listed ring sizes and account for the fixed 170mm arm length.

Listed on Amazon as: WEEROCK Mountain Bike Crankset 1 Piece/Single 32T/34T/36T/38T Charing Crank Set with 170mm Arm for Bicycle MTB, Compatible with Single Speed Bicycle and 6/7/8/9/10/11 Speeds Bike

#5 · Wide Drivetrain Range

5. WEEROCK 42T Crankset

• Material: Aluminium
• Package Weight: 0.77 kg

Best for: Narrow-wide single-ring MTB upgrade.

Why it ranks #5: This 170mm alloy, 104 BCD crank has a 42T narrow-wide ring and is listed for single-speed and 6–11-speed MTB drivetrains.

Its narrow-wide 42T chainring is intended to help prevent chain drop, giving single-ring riders a retention-focused option for compatible mountain bikes. The aluminum-alloy crankset has 170mm arms and a 104 BCD ring interface, with listed compatibility spanning single-speed through 11-speed setups.

The narrow-wide tooth profile is the central practical feature: WEEROCK says it helps prevent the chain from dropping from the ring, which supports a simpler single-chainring arrangement. Aluminum alloy is described as sturdy and non-rusting, and the stated net weight is 0.75kg. The 104 BCD interface is identified as convenient for future disc replacement, while compatibility includes single-speed and 6- through 11-speed MTB setups, plus folding bicycles.

Skip it if you need a smaller ring for your preferred gearing; WEEROCK’s 32T/34T/36T/38T crankset, model B0D4LMGLQX, lists smaller options.

This suits a rider seeking a 42T narrow-wide single crank for a compatible MTB or folding bicycle. Its fixed ring size and 104 BCD interface are the main considerations when matching gearing and replacement-ring plans.

Listed on Amazon as: WEEROCK Mountain Bike Crankset Aluminium Alloy 1 Piece/Single 42T Charing Crank Set with 170mm Arm 104 BCD, Compatible with Single Speed Bicycle and 6/7/8/9/10/11 Speeds MTB Bike

#6

6. Relwears FC-TY301

• Material: Aluminum
• Weight: 912 g
• Package Weight: 1.04 kg

Best for: Versatile triple-chainring MTB replacement.

Why it ranks #6: Its 42-34-24T chainring combination, 170mm arms and square-taper design target riders replacing a 3×6, 3×7 or 3×8 setup.

The FC-TY301’s 42-34-24T triple chainring gives riders three front-ring choices, enabling a broad range of gearing on compatible mountain-bike drivetrains. Its 170mm arms and square-taper setup suit a replacement focused on familiar parts, while the stated 3×6, 3×7, and 3×8 compatibility covers several common gear counts.

Aluminum-alloy crank arms combine reduced weight with increased rigidity, which the listing says helps distribute contact with the bottom bracket more evenly. The 42-34-24T gearing and precision-indexed DUAL SIS shifting are intended to support light, reliable gear changes across compatible triple-chainring setups. Compatibility is specified for 3×6, 3×7, and 3×8 drivetrains and 9/16-inch pedals, so buyers can assess those interfaces before replacing their existing crankset.

Skip it if you want a single front chainring; WEEROCK’s 42T single crankset, model B0DNF3N59W, is configured for that arrangement.

This suits riders replacing a square-taper triple crankset on a 3×6, 3×7, or 3×8 mountain bike. Check that the existing setup uses compatible 9/16-inch pedals and the stated 170mm crank length before choosing it.

Listed on Amazon as: Bike Crankset FC-TY301 42-34-24T Square Taper Set 170MM Crank Arm

#7

7. MEGHNA FC-TY301

• Material: Aluminum
• Weight: 1.04 kg
• Package Weight: 1.01 kg

Best for: Square-taper triple-drive replacement.

Why it ranks #7: This 42-34-24T square-taper crank is listed for 3×6/7/8-speed mountain bikes and offers 170mm arms for a like-for-like triple-ring replacement.

The 42-34-24T triple chainring gives this MEGHNA crankset three front-ring choices, enabling a broad gearing range for compatible mountain-bike drivetrains. Its 170mm arms use a square-taper setup, and the listing names 3×6, 3×7, and 3×8 compatibility for replacement planning.

Aluminum-alloy construction is described as reducing weight while increasing rigidity, with more even contact between the crank and bottom bracket. The 42-34-24T gearing is paired with light, reliable shifting and precision-indexed DUAL SIS features, supporting the intended triple-chainring workflow. MEGHNA lists compatibility with 3×6, 3×7, and 3×8 setups and calls out quick, precise assembly, making drivetrain configuration and square-taper fit the key installation checks.

Skip it if you want a single-ring setup; WEEROCK’s narrow-wide 42T crankset, model B0DNF3N59W, uses a single chainring.

This is suited to riders replacing a square-taper triple crank on a compatible 3×6, 3×7, or 3×8 mountain bike. Confirm that the existing drivetrain uses the listed gearing arrangement and 170mm crank length.

Listed on Amazon as: MEGHNA Bicycle Crankset FC-TY301 42-34-24 Teeth for 3×6/7/8 Speed 170mm Crank for Mountain Bike Gears Square Taper

#8

8. CMTOTWO 48T Crankset

• Material: Aluminum Alloy, Plastic
• Weight: 2.2 lb
• Package Weight: 1.12 kg

Best for: Chain-protected e-bike replacement.

Why it ranks #8: A 170mm alloy-arm, 48T/52T guarded crank aimed at e-bikes and single-speed or 6–8-speed setups; the package also lists a crank removal tool.

The double-layer chain guard helps keep the chain from shifting off the sprocket and keeps chain contact away from trouser legs, making this crankset a practical single-ring option for everyday riding. It pairs a steel chainring with 170mm aluminum-alloy arms and includes a crank removal tool.

A steel chainring and aluminum-alloy crank arms combine the listed sturdy ring material with arms described as lightweight and rust resistant. The double-layer plastic guard is intended to resist displacement and protect clothing, which can matter on an e-bike or fat-tire bicycle used in everyday settings. The product is listed for single-speed and 6/7/8-speed setups, and the included crank removal tool supports crank removal during installation or service.

Skip it if you want a smaller single ring; WEEROCK’s 32T/34T/36T/38T crankset, model B0D4LMGLQX, offers those listed choices.

This is a fit for riders seeking a guarded single-ring crankset for a compatible e-bike, fat-tire bike, or 6/7/8-speed bicycle. Consider its 48T or 52T ring options and 170mm arms against your current setup.

Listed on Amazon as: Bike Crankset for Ebike: 48T/52T Universal Bike Crankset Set Double Chain Cover 170mm Aluminium Alloy Arm for Single Speed and 6/7/8 Speeds Electric Bikes, Fat Tire Bike (Crank Removal Tool Included)

#9

9. WEEROCK 48T Crankset

• Material: Steel, Aluminium Alloy, Plastic
• Weight: 0.94 kg
• Package Weight: 0.94 kg

Best for: Covered chainring for e-bike commuters.

Why it ranks #9: Its 46T, 48T or 52T steel-ring options and double chain cover suit city, folding and electric bikes, but are less aligned with a typical MTB replacement.

A plastic double-wall chain cover surrounds this crankset’s steel 48T chainring, helping protect the chain and reduce the chance of it slipping while shielding clothing from chain contact. The 170mm aluminum-alloy arms make this a single-chainring option for compatible city, folding, and electric bicycles.

The 48T steel ring is paired with aluminum-alloy arms, combining the listed durable ring material with lighter crank arms. Its double-wall plastic cover is described as protecting the chain and helping prevent slipping, a practical feature for riders whose trouser legs pass close to the drivetrain. The crankset is listed for single-speed bicycles and 6-, 7-, or 8-speed electric bikes, so its one-ring layout is the key setup consideration.

Skip it if you need front-ring changes for varied terrain; Relwears FC-TY301 offers 42-34-24T gearing on compatible triple drivetrains.

Choose this for a compatible e-bike, city bike, or folding bicycle that uses one front chainring and benefits from a chain cover. Its listed 48T configuration and 170mm arms define the setup to match.

Listed on Amazon as: Prowheel E Bike/ Bike Crankset 1 Piece/Single 46T/ 48T/ 52T Steel Chainring with Double Chain Cover 170mm Aluminium Alloy Arm for Single Speed and 6/7/8 Speeds Electric Bikes,Bicycles, Folding Bicycle