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⚡ Upgrade your ride with power and precision that lasts!
The RUTU 420 Chain Sprocket is a high-quality, heat-treated 45# steel rear sprocket with 45 teeth, designed for Chinese 50-170cc dirt bikes. Engineered for durability and efficiency, it fits 420 chains with a 76mm inner diameter and includes 4 screws for easy installation. Its corrosion resistance and friction-reducing design ensure longer chain life and reliable performance on tough terrains.



| Customer Reviews | 4.5 out of 5 stars 188 Reviews |
A**R
good sprocket
can't go wrong for the price
A**D
Sprocket
5 star. Perfect. Thx
F**X
Fits my bike
Fits my Apollo RFZ X18.
L**.
Inspiring
For whatever reason, I saw this and had a sudden urge to do some industrial type of resin work. So I did! And here are the results of this sprocket. I love it, and plan on doing more “flowers” with other sprockets I have. This one was especially nice to work with since it’s a little thicker than other ones I have, ad the heavy weight meant that the resin didn’t leak out from under the tape on the bottom. Now I just need to find a welder to make a “stem” for it!
Z**L
great sprockett
mounted right up to my ssr125 no problems, the only thing is i wish the bolts was slightly shorter, but a angle grinder fixed that issue.
Trustpilot
1 week ago
2 weeks ago