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Top 10September 2025

Best Mini Bike Rear Sprocket 50.8mm

We made a list of the top 10 Mini Bike Rear Sprocket 50.8mm based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

JNDO Mini Bike Sprocket 50T 420 Chain 6 Hole Rear Sporcket for Coleman CT100U B100 Baja Doodle Bug DB30 Monster Mega Moto Motovox MBX10

JNDO Mini Bike Sprocket 50T 420 Chain 6 Hole Rear Sporcket for Coleman CT100U B100 Baja Doodle Bug DB30 Monster Mega Moto Motovox MBX10

✓Direct Fit for 6 Hole: Precision-engineered for Coleman CT100U CC100X RB100 B100, Baja Doodle Bug DB30, Monster Mega Moto MMB80 MMB105, Motovox MBX10, Oryxearth 105cc, FPR GMB100.Not compatible with Coleman B200R B200RSV RB200 RT200
✓Engineered for 212cc+ Engines: Lab-tested sprocket teeth eliminate chain slippage, transferring the majority of engine power to the wheels. It's the ideal upgrade for Predator 212cc engines
✓Balanced Performance: 50T Sprocket Strikes the ideal torque-speed balance. Smooth, versatile ride for daily use and mixed terrain
✓Corrosion-Resistant Durability: High-carbon steel core with zinc plating withstands 10,000+ RPM stress. Reduces chain wear by sprockets
✓Quick Upgrade Kit: Includes 6 x Grade 8.8 M6 bolts. Quick Installation – no drilling or extra parts needed

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CILOYU High Speed Mini Bike 420 Sprocket 40T 6 Hole 37mm Bore Replacement for Coleman CT100U CC100X RB100 Monster Mega Moto MMB80 105 Baja Doodle Bug DB30 Motovox MBX10 Mini Bike Accessories Parts

CILOYU High Speed Mini Bike 420 Sprocket 40T 6 Hole 37mm Bore Replacement for Coleman CT100U CC100X RB100 Monster Mega Moto MMB80 105 Baja Doodle Bug DB30 Motovox MBX10 Mini Bike Accessories Parts

✓Compatibility: Upgraded high performance 40 tooth sprocket is design for minibike Coleman CT100U CC100X RB100 B100, Baja Doodle Bug DB30, Monster Mega Moto MMB80 MMB105, Motovox MBX10 with 212cc engine and more larger engine
✓High Speed: This 420 sprocket 40t is for 212cc and larger engines. 420 chain sprocket with more powerful in acceleration, and higher speeds without compromising power delivery. It's a good choice for DIY your mini bike and off road riding
✓Size: Teeth: 40 tooth, mounting holes: 6 holes, mounting hole distance (center to center, bolt hole circle): 1.93" (49 mm), center hole diameter: 1.46" (37 mm), overall diameter: 6.50" (165 mm) （Please note the size, it donesn't fit for 200 series mini bike such as Coleman CT200U Axis M200 and so on)
✓Precision: Precision chain teeth ensures smooth power transmission, reducing chain wear and extending the life of the drive chain
✓Packing List: 1 * 420 chain 40T sprocket, 5 * 420 master link, 1 * 420 sprocket 10T, 6 * screw, 6 * nut, 1 * wrench, 1 * 3/16" keyway

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21% Discount

40T Rear Sprocket 6 Hole Replacement for Mini Bike, Compatible with Coleman CT100U, for Mega Moto MMB80, for Motovox MBX10, 420 Chain Drive, Mini Bike Parts Upgrade Kit

40T Rear Sprocket 6 Hole Replacement for Mini Bike, Compatible with Coleman CT100U, for Mega Moto MMB80, for Motovox MBX10, 420 Chain Drive, Mini Bike Parts Upgrade Kit

✓Broad Compatibility Across Mini Bikes: This 40T rear sprocket fits a variety of mini bikes, including for Coleman CT100U, for Mega Moto MMB80, for Motovox MBX10, and more. It’s designed for 420 chain drive systems with a 6-hole bolt pattern for easy replacement.
✓Heavy-Duty Steel Construction: Crafted from premium steel with protective plating, this mini bike sprocket resists rust, handles high RPMs, and endures tough riding conditions, making it ideal for frequent or off-road use.
✓Smooth Power Transfer: The precisely machined teeth on this 420 chain sprocket ensure consistent torque, reduce chain slippage, and protect other transmission components from premature wear.
✓Engine Upgrade Ready: Designed to support 212cc and larger engines, this sprocket ensures powerful acceleration and strong traction for riders tackling challenging terrain.
✓High Torque Performance: With its 40 tooth configuration, this sprocket for mini bike enhances low-end torque and hill-climbing power, delivering a noticeable performance boost for any mini bike enthusiast.

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11% Discount

YOXUFA 40/41/420 Chain 40T Tooth Mini Bike Sprocket 40mm Bore for Coleman BT200X CT200U CT200U-EX Baja Warrior TrailMaster Massimo MB165 MB200 Axis M200 Predator 212 196cc 200cc 6.5hp Go Kart Parts

YOXUFA 40/41/420 Chain 40T Tooth Mini Bike Sprocket 40mm Bore for Coleman BT200X CT200U CT200U-EX Baja Warrior TrailMaster Massimo MB165 MB200 Axis M200 Predator 212 196cc 200cc 6.5hp Go Kart Parts

✓420 chain sprocket works on Coleman Baja TrailMaster Massimo 196cc 200cc 6.5hp powersports mini bike go kart. Compatibility: Coleman Powersports BT200X CT200U CT200U-EX CT200U-EXR, Baja Motorsports Mini Bike MB165 & MB200 (Heat, Mini Baja, Warrior), Massimo MB200, TrailMaster MB200, Axis M200, Coleman KT196
✓The precision-machined metal alloy construction ensures firmness and resistance of mini bike rear sprocket to wear and tear. And the black anodized finish protects the sprocket from rust and corrosion
✓In the same condition of front go kart sprocket unchanged, the smaller rear sprocket can increase speed and save more fuel, gives you a bit better top end, and you got a decent amount of torque
✓Size of 420 Chain Sprocket: 40/41/420, teeth: 40 Tooth. Mounting hole distance (center to center, bolt hole circle): 3-3/16" (80 mm). Center hole diameter: 1-9/16" (40 mm). Overall diameter: 6-1/2"(165mm)
✓Note: This 40 tooth sprocket is designed for 420 chain, pls check chain sprocket's size is #420 of your original one

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7% Discount

CILOYU 35 Chain Mini Bike Rear Sprocket 40T Compatible with Coleman CT100U CC100X Baja DB30 Predator 79cc 97cc 100cc Motovox MBX10 MBX11 Mega Moto MM-B80 105cc Powersports Parts

CILOYU 35 Chain Mini Bike Rear Sprocket 40T Compatible with Coleman CT100U CC100X Baja DB30 Predator 79cc 97cc 100cc Motovox MBX10 MBX11 Mega Moto MM-B80 105cc Powersports Parts

✓Fitment: 35 chain for mini bike and 35 sprocket 40t are compatible with Predator 97cc 98cc 100cc 2.5hp 2.8hp 3.0hp Coleman Baja Motovox Mega Moto Monster Moto mini bike
✓Wide Compatibility: Coleman Powersports CT100U CC100X RB100 Trail 100 mini bike Baja Motorsports Doodle Bu* DB30 (Blitz, Dirt Bu*, Viper) mini bike Motovox MBX10 MBX11 mini bike Monster Moto Mega Moto Classic 80cc MM-B80 105cc MM-B105 electric mini bike
✓Durable Construction: The 35 roller chain and 40 tooth sprocket 35 chain are machined from a durable metal alloy, thicked and more sturdy
✓Improved 6 hole sprocket: Improved mounting hole spacing and 6 mounting holes for increased compatibility, this design is specifically tailored for mini bikes or go-karts and allows for unobstructed installation, saving time and effort
✓Efficient Power Transmission: Our 40t rear sprocket offers faster transmission speed, achieving an optimal transmission ratio, driving at high speeds while saving fuel, giving your mini bike more power to conquer various terrains
✓Size: Mounting hole distance: 1.92" (49 mm), centre hole diameter: 37 mm 1.45", tooth: 40t, chain size: 35 chain

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420 76mm 35 Tooth Rear Sprocket Compatible with Pit Dirt Motor Bike/Mini ATVs 50cc 70cc 90cc 110cc 125cc 140cc 150cc 160cc 170cc 190cc CRF50 Motorcycle Replacement

420 76mm 35 Tooth Rear Sprocket Compatible with Pit Dirt Motor Bike/Mini ATVs 50cc 70cc 90cc 110cc 125cc 140cc 150cc 160cc 170cc 190cc CRF50 Motorcycle Replacement

✓Precision Fit: Engineered for 420 chain setups with a 76mm center bore and 4 evenly spaced mounting holes. Ensures a perfect fit on most 50–190cc dirt bikes and mini ATVs. Please confirm your model before purchasing
✓Wide Compatibility: Compatible with Apollo, SSR, Coolster, Pitster Pro, Honda CRF50 (pre-2020), and other Chinese-made 50–190cc dirt bikes and mini bikes. Perfect for winter upgrades or off-season maintenance.
✓35-Tooth Design: The 35T configuration delivers faster speed at the same front sprocket, ideal for off-road riders who need agility on snow, gravel, or ice
✓High-Strength Steel: Constructed from durable, wear-resistant steel with a corrosion-resistant black coating. Designed to withstand muddy, wet, and cold winter riding conditions without rusting or wearing down prematurely
✓Complete Kit:Package includes: 1× 420-35T rear sprocket, 2× lock plates, and 4× mounting bolts. Everything you need for a hassle-free replacement or upgrade—no need to buy extra parts.The part/product is not sponsored or endorsed by,or affiliated with the brands it fit,including Pit Dirt Motor Bike

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CILOYU Mini Bike Rear 35 Sprocket 40T Compatible with Coleman CT100U CC100X Trail 100 CK100 Baja DB30 TaoTao GK80 Monster Moto 80cc Motovox MBX10 MBX11 Predator 97cc Mini Bike Go Kart Parts

CILOYU Mini Bike Rear 35 Sprocket 40T Compatible with Coleman CT100U CC100X Trail 100 CK100 Baja DB30 TaoTao GK80 Monster Moto 80cc Motovox MBX10 MBX11 Predator 97cc Mini Bike Go Kart Parts

✓100% FITMENT: 35 chain sprocket is compatible with Baja Doodlebu* DB30 (Blitz, Dirt Bu*), Hensim Doodlebu* DB30 (Blitz, Dirt Bu*), Motovox Mbx10 Mbx11, Monster Moto MM-B80 MM-B105, Coleman Powersports CT100U CC100X
✓DOUBLE IMPROVED DETAILS: (1) Improved mounting hole spacing and 6 mounting holes for improved compatibility. (2) The 40-tooth sprocket ensures optimal power transfer and smooth chain operation. Not only enhances rading efficiency but is also perfect for high-speed riding, ensuring optimal efficiency and stability of your mini bike chain
✓TOOL-FREE INSTALLATION: Easy to install on the mini bike, installation takes only 5 minutes. Packing list: 1 x mini bike rear sprocket, 6 x screws, 6 x nuts, 1 x spanner, 5 x #35 master links
✓DURABLE CONSTRUCTION: The #35 sprocket is made of precision machined premium metal alloy, designed for #35 chains with precision tooth design to ensure seamless compatibility and optimal efficiency. The premium metal ensures long-lasting using and resistance to wear and tear. This sprocket has a longer service life than other sprockets
✓SIZE: The chain size: 35 chain, tooth count: 40t, mounted holes: 6 holes, mounting hole diameter: 1.46" (37 mm), mounting hole distance: 1.92" (49 mm)

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XIKOBY 35 Chain 40 Tooth Mini Bike Rear Sprocket for Coleman CT100U CC100X Trail 100 CK100 Baja Doodle Bug DB30 Motovox MBX10 MBX11 Mega Moto 80cc Taotao GK80 Go Kart Predator 97cc 100cc Minbike Parts

XIKOBY 35 Chain 40 Tooth Mini Bike Rear Sprocket for Coleman CT100U CC100X Trail 100 CK100 Baja Doodle Bug DB30 Motovox MBX10 MBX11 Mega Moto 80cc Taotao GK80 Go Kart Predator 97cc 100cc Minbike Parts

✓Fitment: #35 Chain Sprocket 40 Tooth compatible with 97cc 98cc 100cc 2.5hp 2.8hp 3.0hp Coleman CT100U CC100X RB100 trail 100 mini bike, Coleman CK100 SK100 go kart, Baja Motorsports Doodle Bug DB30 ( Dirt Bug,Blitz, Racer), Motovox MBX10 MBX11, Mega Moto Classic 80cc MM-B105 MM-B80 mini bike, Monster Moto 1000w mini bike, Realtre* RT100 105cc mini bike, Mega Moto MM-K80R, TaoTao GK80 gas go-kart
✓40 Tooth and 12 Holes Design: 40 teeth design ensures optimal power transfer and smooth chain operation. The #35 chain sprocket is an ideal choice for both go kart and mini bike enthusiasts. In addition 12 holes mounting hole design gives your mini bike more adaptability
✓Premium Quality: Crafted from high-quality metal, the 40 tooth #35 sprocket chain offers excellent durability and corrosion resistance. Withstanding all kinds of the toughest terrains. The #35 sprocket's precise manufacturing ensures a seamless connection with the chain to avoid slippage
✓Size: Diameter : 5 inch, mounting holes: 12, mounting hole distance (across): 0.5" (14 mm) tooth thickness: 0.04" (1mm)
✓Package: 1 X mini bike rear sprocket, 5 X #35 master link, 6 X screws, 6 X nuts

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XIKOBY 35 Chain 40 Tooth Rear Sprocket for Mini Bike Coleman CT100U CC100X Baja Doodle Bug DB30 Racer Motovox MBX10 Mega Monster 80 105cc Taotao GK80 CK100 Go Kart Predator 97cc 100cc Minibike Parts

XIKOBY 35 Chain 40 Tooth Rear Sprocket for Mini Bike Coleman CT100U CC100X Baja Doodle Bug DB30 Racer Motovox MBX10 Mega Monster 80 105cc Taotao GK80 CK100 Go Kart Predator 97cc 100cc Minibike Parts

✓Fitment: 40 tooth sprocket 35 chain is compatible with for predator 97cc 98cc 100cc 2.5hp 2.8hp 3.0hp Coleman CT100U CC100X RB100 trail 100 mini bike, Coleman CK100 SK100 go kart, Baja Motorsports Doodle Bug DB30 ( Dirt Bug, Blitz, Racer), Motovox MBX10 MBX11, Mega Moto Classic 80cc MM-B105 MM-B80 mini bike, Monster Moto 1000w mini bike, Realtre* RT100 105cc mini bike, Mega Moto MM-K80R, TaoTao GK80 gas go-kart
✓40 Tooth and 12 Holes Design: 40 teeth design ensures optimal power transfer and smooth chain operation. The #35 chain sprocket is an ideal choice for both go kart and mini bike enthusiasts. In addition 12 holes mounting hole design gives your mini bike more adaptability
✓Premium Quality: Crafted from high-quality metal, the 40 tooth #35 sprocket chain offers excellent durability and corrosion resistance,solid. withstanding all kinds of the toughest terrains. The #35 sprocket's precise manufacturing ensures a seamless connection with the chain to prevent slippage
✓Excellent Strength and Wear Resistance’s 35 Chain 40 Tooth Sprocket: Our 35 sprocket for mini bike crafted from high-quality metal. Offering excellent durability and corrosion resistance, withstanding all kinds of the toughest terrains. 35 sprocket' precise manufacturing ensures a seamless connection with the #35 chain to prevent slippage
✓Package: 1 X mini bike rear sprocket, 5 X #35 master link, 6 X screws, 6 X nuts

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35 Chain 40 Tooth Sprocket - PSLER 40T Rear Sprocket Replacement Part for Go Kart Quad Mini Bike Dirt Bikes Monster Moto Mega Moto TaoTao GK80 Gas Go Kart

35 Chain 40 Tooth Sprocket - PSLER 40T Rear Sprocket Replacement Part for Go Kart Quad Mini Bike Dirt Bikes Monster Moto Mega Moto TaoTao GK80 Gas Go Kart

✓【Note】There are burn marks on the surface of the product due to quenching process, which aims to increase the hardness and durability of the product. The models listed below are for reference only. If you have any questions, please feel free to let us know and help solve them, so that customers can have a satisfactory shopping experience.
✓【Fitment】Our rear #35-40t-37mm chain rear sprocket firs for 40 teeth bike model and is used with a 35 size chain. For most go-karts/mini-bikes/dirt bikes.Such as sprocket for Coleman CC100X RB100 trail 100 Mini Bike Coleman CK100 SK100 Go Kart Monster Moto Mega Moto TaoTao GK80 Gas Go Kart and more
✓【Size】The 40 tooth #35 sprocket Sprocket has 6 mounting holes. For detailed dimensions, please check the product size chart. Before placing an order, please pay attention to whether the product dimensions match your car model.
✓【Material】The 40t rear sprocket is made from heavy-duty steel material, which not only enhances racing performance and increases riding speeds, but is also able to cope with any conditions that karts face.
✓【Package】1*40 tooth #35 sprocket sprocket.Installation instructions not included
✓【Color】silver white（as the picture shows）

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