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AlveyTech 40/41/420 Chain 40 Tooth Rear Sprocket - Compatible 40 Chain Sprocket Replacement Fits 79cc Gas Mini Bike, 3-Wheel Trike, Go-Kart, ATV, Quad 4-Wheeler Parts, Motorized Bicycle

4.9 (8) Write Review
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$15.79

$ 7 .99 $7.99

In Stock
  • COMPATIBILITY: Our 40T Sprocket 420 Chain is made for ensuring a compatible fit to Coleman CT200U, CT200U-EX, EXR Baja mini bike Massimo MB165, MB200 and many other ATVs, quad, go-kart and motor scooters
  • SPECIFICATION: Mini bike rear sprocket for #40/41/420 chains, featuring a 6.50" overall diameter, 40 teeth, with mounting holes spaced 3.16" apart (center to center) and a center hole diameter of 1.57" on this 4 bolt rear sprocket
  • HIGH QUALITY: This 40 tooth mini bike sprocket is crafted from precision-machined metal alloy, ensuring smooth operation and resistance to wear and tear. The black anodized finish protects the sprocket for mini bike from rust and corrosion
  • MORE EFFICIENCY: Ride with higher acceleration and improved fuel efficiency with our 40 tooth rear sprocket
  • RISK FREE GUARANTEE: We honor Amazon’s return policy. In case of any troubles, please feel free to contact us


Product Description

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James Dean Klein
Reviewed in the United States on January 30, 2025
Just as advertised
Steven Espinoza
Reviewed in the United States on March 20, 2024
Mounted to my mini bike. I gained plenty speed from it. I went from 22mph to 45 mph just by swapping to this gear. I have a 10t clutch on a jackshaft with the 420 chains along with this 40t rear gear.
TAE
Reviewed in the United States on January 4, 2024
* direct fit > 7mph gain ...
Tony
Reviewed in the United States on October 7, 2023
It was a ok purchase. It did not increase my top speed like a was wanting it to but it fit fine on my Coleman Ct200u.
John Bergendahl
Reviewed in the United States on July 10, 2022
Perfect fitment . I ended up getting the engine riser to eliminate the chain making contact with the frame without having to cut the frame.Its on a Coleman BT200x. Had to cut the chain.Lost small amount of torque still rides nice on the trails .Gained 5 mph top end
Alan Malmstrom
Reviewed in the United States on December 28, 2022
Just drill 3 holes in it using the old sprocket as a clamped on template. The Mega Moto 212 will go faster at prolonged speeds but will lose initial 0 to 30 speed depending on your motor.
Danielle
Reviewed in the United States on November 19, 2022
Fit perfect on my Coleman CT200U-EX. Only took about 30-40 minutes to change it out. Ended up taking 6 links of chain out and i gained 7 mph on the top end speed! Perfect compromise between torque and speed imo. Also, it does not rub on the crossbar.
Nick
Reviewed in the United States on May 1, 2021
Fit my Baja Warrior nice and snug. Going from the OEM sprocket down to this one with less teeth, I sacrificed a little bit of get up low end for the ability to get from A to B quicker. Basically if you have a ton of hills or you are going to be towing then this would be the smallest sprocket I would add to the Baja.