RK
RK 420 MRU Chain | Japan-Made Motorcycle Drive Chain
RK 420 MRU Chain | Japan-Made Motorcycle Drive Chain
SKU:BL420MRU-120
33 in stock
Couldn't load pickup availability
The RK 420 MRU Chain is the go-to drive chain for riders who demand precision and reliability — from MotoGP paddocks to daily commutes. Crafted in Japan to exacting standards, RK Chain is trusted across all levels of motorcycle riding, including club racing, track days, and street use.
Available in 120 and 130 link counts, the 420 MRU is a perfect fit for mini bikes, pit bikes, and small-displacement motorcycles including the Honda Grom, Monkey, CRF110, KLX110, Z125, and TNT135.
Specifications:
- Brand: RK
- Chain Size: 420
- Series: MRU
- Available Links: 120 (SKU: BL420MRU-120), 130 (SKU: BL420MRU-130)
- Weight: ~2.5 lbs
- Origin: Made in Japan
Compatible Models (partial list):
- Honda Grom (OG, SF, 2022+)
- Honda Monkey (1st Gen, 2022+)
- Honda CRF110 (2019+)
- Kawasaki KLX110
- Kawasaki Z125
- SSR TNT135
Howling Moto proudly carries RK Chain for its unbeatable quality and race-proven performance.
Share

Great company, great customer service. 10 out of 10. Will definitely be ordering from them from here on out
-
Free Shipping
We offer free shipping on any order over $200!
Some restrictions may apply for big box and freight items. -
Howling Tech Support
Please feel free to call or email at any time for questions on our offerings.
Join the pack!
In addition to our online parts sales we offer great in house service and customization of your favorite bikes.