Best Motors For Go Karts: Gas and Electric Options Compared

#1 · Best Overall

1. maXpeedingrods 7HP 212cc

• Dimensions: 19.29 x 16.54 x 15.75 in
• Weight: 41.6 lb

Best for: Electric-start gas kart upgrade.

Why it ranks #1: The 7HP, 212cc engine lists a 3/4-inch shaft and 3/16-inch keyway, plus recoil and electric starting for gas-kart replacement flexibility.

Electric starting is the key convenience here: turn the key instead of relying only on a pull start, with recoil starting also available. The 212cc, 7HP four-stroke OHV engine suits a go-kart project that needs a horizontal-shaft gas powerplant and a manual-start backup.

The 3/4-inch-diameter, 2.43-inch-long horizontal shaft has a 3/16-inch keyway and a drilled, tapped 5/16-inch-24 end, giving you concrete dimensions to match against a drive setup. Electric and recoil starting provide two ways to start, while the 3.6-liter fuel tank supports operation between refills. At 41.6 pounds, the engine is a substantial component to position and secure; its 0.6-liter oil capacity also makes routine oil servicing part of ownership.

Skip it if you need electric starting without sourcing a battery; the GENMAX GM212R uses recoil starting and needs no battery.

A good match for a go-kart builder who values key starting but wants recoil as an alternative. Check the shaft dimensions against the kart’s drive components, and plan for a battery if you intend to use electric starting.

Listed on Amazon as: maXpeedingrods 7HP 212cc Gas Engine, Electric Start 4 Stroke OHV

#2 · Best Pull-Start

2. GENMAX GM212R

• Dimensions: 15.15 x 12.28 x 13.85 in
• Weight: 38.2 lb

Best for: Battery-free replacement engine.

Why it ranks #2: This 7HP, 212cc engine has a 3/4-inch shaft, 2.43-inch length, 3/16-inch keyway, and recoil start without battery dependence.

A recoil starter that needs no battery makes the GENMAX GM212R a practical choice for a go-kart used away from electrical support. Its 7HP, 212cc four-stroke OHV engine and standard mounting pattern target replacement of many light-duty 7HP engines and fit a range of equipment.

The 3/4-inch shaft measures 2.43 inches long and uses a 3/16-inch keyway with a 5/16-inch-24 UNF thread, dimensions that help assess a replacement against existing drive hardware. GENMAX also specifies a standard mounting pattern for go-karts, cultivators, water pumps, and pressure washers, simplifying the search for a compatible application. Pull starting avoids battery dependency, while the 38.2-pound listed weight is relevant when moving the engine into position during installation.

Skip it if you want key-operated starting; the maXpeedingrods MXR212E offers electric and recoil starting, with its battery sold separately.

Choose it for a light-duty kart replacement where pull starting and a standard mounting pattern suit your setup. Compare the listed shaft and mounting details with your existing hardware before installation.

Listed on Amazon as: GENMAX 7HP 212cc Recoil Start Gas Engine, Horizontal Shaft 3/4", 4-Stroke OHV, Replacement Engine for Go Kart, Water Pump, Cultivator(GM212R)

#3 · GX160-Style Option

3. Mahugde 200CC 6.5HP

• Dimensions: 14.17 x 9.84 x 12.6 in

Best for: 6.5HP pull-start gas engine.

Why it ranks #3: Its listed 6.5HP and 3600RPM suit buyers seeking a lower-output gas engine, though shaft dimensions are not specified here.

A 6.5HP rating and 3600rpm speed define this 200cc, four-stroke horizontal-shaft gas engine for go-karts and other listed equipment. Its pull-start operation keeps the stated starting method straightforward, while air cooling and the GX160 reference help identify the engine type and intended replacement context.

The horizontal-shaft configuration and 3600rpm specification give a kart builder useful starting points for evaluating a gas-engine layout. Its 6.5HP rating and 200cc title specification distinguish it from higher-output options, while the listing describes a four-stroke, air-cooled gasoline engine with pull starting. The stated product dimensions are 14.17 by 9.84 by 12.6 inches, useful for checking available space. The model references vary across the title and specifications, so verify the intended displacement before selecting it.

Skip it if you need electric starting as well as recoil; the maXpeedingrods MXR212E offers electric and recoil start, with battery not included.

This engine suits a kart builder seeking a 6.5HP pull-start gas option with a horizontal shaft. Check the available mounting space and resolve the 200cc versus 212cc listing discrepancy before choosing it.

Listed on Amazon as: 200CC Engine, 6.5HP 4 Stroke Horizontal Shaft Gas Engine 3600RPM Pull Start Motor Air Cooling Gasoline Engine Motor for GX160 Go Kart Compressor Log Splitter Lawn Mower Mini Bike

#4

4. Mahugde 212cc 7.5HP

• Dimensions: 10"W x 12.9"H
• Weight: 58.6 lb

Best for: Dual-start 7.5HP gas engine.

Why it ranks #4: The listing states 7.5HP, 3600RPM, and recoil/electric starting, but its model and displacement details conflict, so verify fit before buying.

Hand or electric starting gives this 7.5HP, 212cc four-stroke gas engine two stated starting methods for a go-kart or equipment project. Its listed 3600rpm speed and single air-cooled cylinder identify the basic operating configuration, while the recoil/electric-start description offers a choice at startup.

The 7.5HP rating and 3600rpm specification describe the engine’s stated output and speed for buyers comparing gas-powered kart options. Its four-stroke design and air-cooled single cylinder provide the supplied engine configuration, while the description says it can start by hand or electric power. The listing gives a 58.6-pound weight, so positioning and securing it will require accounting for a relatively heavy component. Product naming and specifications give differing displacement/model references, so verify the intended engine details before purchase.

Skip it if you need explicit shaft diameter, length, and keyway dimensions; the GENMAX GM212R lists those for replacement matching.

Consider it if a 7.5HP gas engine with hand or electric starting fits your kart plan. The listing conflicts on displacement and model references, so resolve that specification discrepancy before committing to an installation.

Listed on Amazon as: 212cc Gas Engine, 7.5HP 4 Stroke Recoil/Electric Start Go Kart Motor Engine, OHV Air Cooling Single Air Cooled Cylinder Motor for Go Kart Compressors Trencher Lawn Mover, 3600rpm

#5 · Large-Shaft Option

5. YUASDUU 212CC Engine

• Dimensions: 14.25 x 12.32 x 12.99 in

Best for: Oversize-shaft gas kart engine.

Why it ranks #5: Its 7.5HP engine is intended for go-karts, but the listed 20mm crankshaft is larger than a standard 3/4-inch shaft.

Its 20mm crankshaft diameter is the defining fit consideration: YUASDUU says it is slightly larger than standard 3/4 inch. This 212cc, 7.5HP four-stroke pull-start engine suits a builder who can accommodate that shaft and wants a horizontal-shaft gas motor for a kart or equipment.

The listed crankshaft measures 20mm in diameter and 50mm long, so checking the drive connection is especially important before installation; the supplied description explicitly distinguishes its diameter from standard 3/4-inch sizing. Pull starting keeps the stated startup method simple, while the 7.5HP and 212cc specifications identify its engine class. YUASDUU advises checking oil if the engine will not start and gives 0.65 liters as the oil amount, making oil level an important initial service check.

Skip it if you need a standard 3/4-inch shaft for a listed replacement; the GENMAX GM212R specifies a 3/4-inch diameter and 2.43-inch length.

This engine is for a gas-kart builder whose drivetrain can accept the stated 20mm crankshaft. Its 7.5HP rating and pull start suit a straightforward setup, but shaft compatibility is the key boundary to settle first.

Listed on Amazon as: 212CC Engine, 7.5 HP Go Kart Engine 4 Stroke Gas Engine Pull Start Engine Motor Horizontal Shaft Single Cylinder Motor for Go Kart Compressors Trencher Lawn Mover

#6 · Highest Rated Power

6. doin al KR10E 6500W Kit

• Weight: 18 lb
• Voltage: 72 V

Best for: High-output off-road electric kit.

Why it ranks #6: This 72V kit lists 6500W rated power, a controller, and an electric throttle with key for builders assembling a high-output electric kart.

Rated at 6500W with 12,500W peak power and 42N·m peak torque, this 72V kit targets electric kart and dirt-bike builds needing substantial stated output. It includes a KR10E motor, NS18 controller, and keyed electric throttle, bringing major controls and drive electronics together.

The 6500W rated output, 12,500W peak power, and stated torque figures help define the demands of a high-output electric setup. A 420 9T sprocket and stated efficiency of up to 90% connect the motor to a drive configuration, while the included NS18 controller and keyed throttle provide core control hardware. The product specifies 6000rpm rated speed and 9000rpm maximum speed. Its precision encoder is described as improving rotor-position sensing for smoother starts, useful when setting up a responsive off-road build.

Skip it if you need a 48V electric kit; the Kunray 1600W kit includes a controller and both foot and twist-grip throttles.

This is a fit for an off-road kart builder planning a 72V system around the supplied controller, throttle, and 420 sprocket. Check the drivetrain and electrical plan against its high output and stated speed range.

Listed on Amazon as: 72V 6500W Brushless Motor Kit KR10E Electric Go Kart Dirt Bike Motor

#7

7. Kunray 1600W 48V Kit

• Weight: 9.4 lb
• Voltage: 48 V

Best for: Compact 48V mid-motor kit.

Why it ranks #7: The 48V, 1600W kit includes a speed controller, twist-grip throttle, and foot throttle, offering useful controls for an electric conversion.

The 1600W brushless mid-motor kit includes both twist-grip and foot throttles, enabling a builder to choose between two supplied control styles. Its 48V motor is rated at 3900rpm no-load and can reach 4500rpm maximum, making it a compact electric option for a go-kart conversion.

The aluminum motor, speed controller, twist-grip throttle, and foot throttle are all listed as included, so the kit provides key drive and control components together. Its 48V rating and 33A rated current give buyers electrical specifications to consider when planning a compatible system. Kunray lists a 9.4-pound weight and a 4.25-by-4.33-inch dimension, details that can help with space and placement planning. The motor’s running direction can be changed by altering specified phase and Hall wiring.

Skip it if you need a 72V, 5000W brushless motor; the Kunray KR5V includes a 100A controller and #35 chain components.

This kit suits a 48V kart project where its 1600W output and choice of foot or twist throttle fit the layout. Review wiring instructions carefully if changing motor direction, and plan around its electrical specifications.

Listed on Amazon as: Kunray 1600W 48V Go Kart Electric Motor Kit,Throttle,33A Speed Controller

#8

8. Kunray KR5V 5000W Kit

• Weight: 5.5 kg
• Voltage: 72 V

Best for: 72V brushless conversion kit.

Why it ranks #8: Its 72V, 5000W motor kit includes a controller, throttle, #35 sprocket, and chain, but the listed components require drivetrain verification.

A 72V, 5000W brushless motor arrives with a 100A FarDrive controller, #35 sprocket, chain, and throttle, giving an electric go-kart project several core drive components together. The KR5V’s five-pair V-magnet rotor and rear-cover Hall sensor are specified features of this motor kit.

The included controller, throttle, #35 sprocket, and #35 chain provide a more complete starting point for an electric drivetrain than a motor alone, though the supplied facts do not specify a battery. The 72V rating and 5000W output define the electrical system this setup requires. Kunray places the Hall sensor in the back cover, where it is described as less exposed to burning than an internal placement; the aluminum motor weighs 5.5kg, a useful installation consideration.

Skip it if you need a listed 6500W motor kit with a precision encoder; the doinal KR10E includes a controller and keyed throttle.

Consider this kit for a 72V electric kart build when its 5000W motor, #35 chain drive, and included controller suit the planned drivetrain. A battery is not listed, so account for that separately.

Listed on Amazon as: Kunray KR5V 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing

#9

9. Unndysrt 48V 1000W Kit

• Voltage: 48 V

Best for: Adjustable-speed 48V brushed kit.

Why it ranks #9: This 48V brushed kit includes a controller, chain, and throttle with LED display; its sprocket is for 8mm T8F chain.

Infinitely adjustable speed control is the defining feature of this 48V, 1000W brushed motor kit, letting a rider modulate speed through its supplied throttle. The package also lists a chain, controller, keys, and LED-display throttle pair, giving a go-kart conversion several specified components together.

The 26A controller and infinitely adjustable speed control support gradual speed changes rather than a set of stated fixed steps, while the LED display adds a visible readout on the supplied throttle. The included chain is specified as T8F for an 8mm sprocket, and the mounting bracket measures 5cm long, both useful details when planning installation. The motor is listed with a 120kg load capacity; buyers should compare that limit with the intended vehicle and rider load.

Skip it if you need a 72V brushless kit with a listed 6500W rating; the doinal KR10E includes a controller and keyed throttle.

Choose it for a 48V kart conversion where adjustable speed, an LED throttle display, and listed T8F chain suit the setup. Keep the 120kg stated load capacity in view when assessing the intended use.

Listed on Amazon as: 48V 1000W Brushed Motor Kit, Electric Dc Motor Kits 3000rpm with 26A Infinitely Adjustable Speed Controller Throttles with LED Display for Scooters Go Karts Motorized Bicycle E-Bike

#10

10. doin al KR5V 5000W Motor

• Dimensions: 5.4"W x 5.4"H
• Weight: 5.81 kg
• Voltage: 72 V

Best for: 72V motor-only conversion choice.

Why it ranks #10: The 72V, 5000W brushless motor is listed without a controller or throttle, so it is less complete for a go-kart build than the kits above.

A 72V, 5000W brushless motor with a five-pair V-magnetic design is the core of this listing, which supplies the motor rather than a full drive kit. Its copper coil and Hall sensor mounted near the back cover are additional specified construction details for an electric kart project.

The 72V rating and 5000W output give a clear electrical and power specification for planning a compatible conversion, while the product’s included-components list names only the brushless motor. That means buyers should account for other required system parts separately. The five-pair V-magnetic design and pure copper coil are described as supporting stability and conductivity, and the Hall sensor’s position near the back cover is stated to provide better protection. The motor weighs 5.81kg, relevant when considering placement.

Skip it if you want a listed motor, controller, and throttle together; the doinal KR10E kit includes all three components.

Pick this motor for a 72V electric kart project when you already have a plan for the rest of the drive system. The listing specifies the motor, so account separately for controller and throttle requirements.

Listed on Amazon as: Electric Brushless DC Motor 72V 5000W Peak 8000RPM Scooter Motor KR5V V2