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"Is your sprocket in need of a replacement?
Dirt bike sprockets wear out over time, resulting in many problems for you and your motorcycle. For example,chain tensioning can become difficult, which may cause the chain to fall off and jam in the drive train. Or the chain may not roll off the sprocket smoothly as it turns, causing the wheel to lock up.
When this particular part starts to malfunction, it’s best to replace it right away. If you’re looking for a complete replacement kit, then we’ve got just the set for you.
Pay attention to size
The thickness of the sprocket is 6mm/0.24"
The diameter of the hole is 14mm/0.55"
The overall length of the sprocket is 45mm/1.77"
17mm/0.67" engine countershaft diameter
Package includes
1. 1 X sprocket 420-10T 17MM
2. 1 X Cir-Clip
Here are more details
- Precision engineering
- Improve transmission efficiency
- Reduce friction loss
- Steel material used meets ISO standards
We offer the sprocket with different numbers of teeth of size 420# and 428#.
The more gears there are, the faster the speed will increase and fuel consumption will increase, but the top speed will decrease.
Conversely, if the number of gears decreases, the growth rate will slow down and fuel consumption will also decrease.
The number of teeth is different, the starting speed and fuel consumption of the motorcycle will change. You can choose the sprocket you need according to your needs.
K. Wong
Reviewed in the United States on February 28, 2025
I bought the 16T front sprocket for my 125cc SSR ATV to get more top speed, since my OEM was only 13T. The difference is noticeable. first gear is much more usable now, and I definitely get a higher top speed. Installation was easy, and the quality seems solid. Looking back, I wonder if a 17T might have been even better option
Customer
Reviewed in the United States on January 31, 2025
Fits as it said
Customer
Reviewed in Canada on June 19, 2024
Reduce gear ratio on 110 cc Chinese atv to slow it dow but also increase torque for of road for kids
Ross Black
Reviewed in the United States on May 26, 2024
Perfect sprocket to change up the gear ratio on my 250cc Motovox mini bike build. The bike has shorter tires than a dirtbike so this gear helps change up the ratio to compensate for the short tires. YouTube BLACK66
Seth P.
Reviewed in the United States on January 19, 2023
Gear it constructed out of heavy steel, but I couldn't get the clip to stretch out over the spline to sit into to groove. I just wrapped it with some mechanic wire... Been weeks and all kinda kids driving. Good so far
RDPS
Reviewed in the United States on June 24, 2022
I bought a Honda Little Cub with a Daelim 110cc engine. The Little Cub cake with 14 inch rear wheels, the Daelim 110 engine was made for 16 inch, so the final drive was wrong, too short. This sprocket fit right in on the Daelim engine, and made the gears taller. The top speed of the bike went to am acceptable 85 km/h after the switch. Excellent!
Customer
Reviewed in Canada on May 20, 2022
Good product. Be nice if it came with a 1/8 shim to take the play out. Made my own.
Christina Tassé
Reviewed in Canada on September 13, 2021
Bolts on
Chad S.
Reviewed in the United States on February 22, 2021
Easy to install. Fit perfect on his SSR 125. Changed the whole operation of the bike. Went from a 14t to 17t. Now we can ride in 1st. B4 this upgrade 1st gear was almost unusable. Highly recommend this if your running a 14t or 15t sprocket.. Worth the money. Its a clean, well manufactured and quality upgrade.
GrimmRoper
Reviewed in the United States on February 1, 2020
I bought my kids a 110cc Tao ATV. The unit itself is pretty nice and runs great. However in the stock gear ratio with a 14 tooth front sprocket and 37 rear sprocket was 2.6 and the quad would get stopped on minor inclines. The quad would also go up to 30 mph. I put in the 10 tooth sprocket in the front and changed the gear ratio to 3.7. This thing will climb over curbs and run up hills without any hesitation now. Putting in this sprocket also reduced the top speed to just under 20 mph which is perfect for smaller kids.When installing this sprocket you will need to use a chain breaker to take off two links from the chain since the sprocket is much smaller than the stock 14-tooth sprocket. If you are trying to increase the bottom end on a youth quad and limit the top end, this is the trick you are looking for. This sprocket is perfect for my needs.
Robert L.
Reviewed in Canada on May 1, 2018
From Drummondville Québec.Everything perfect , new part , well Packed. Very satisfied.
Adolfo Torres
Reviewed in Mexico on February 10, 2018
Pedí por error el piñón por la medida, lo cancele y tenia que esperar 2 días para que me aceptaran mi reembolso y JAMAS autorizaron nada para que a la fuerza tenga que quedármelo. SEGUN ya lo enviaron desde el momento que lo encargue y la fecha es muy lejana.ILOGICOY lo peor ahora yo tengo que moverme para devolverlo.jamas comprare productos chinos JAMAS
Customer
Reviewed in the United States on October 29, 2018
I bought this for my Piranha 140 (YCF SP-3 150) and it works great. It is the biggest that you can go on this particular set up that I have YX140 before you will have the change the length of the chain. Be advised that this sprocket will make your chain run extremely close to your engine case and one chain come-off will produce case damage. Nothing to do with this product but should be thought about when changing out sprockets.
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