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Your cart is empty.GB420MXZ chains are made for the serious motocross racer looking for the lightest, strongest non O-ring chain. GB420MXZ chains feature chrome-moly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength. All components are heat-treated using RK's exclusive HIT (Heat Induction Transfer) process. GB420MXZ racing chains are the strongest in their class giving you the best value-performance rating of any MX racing chain in the world today. With a maximum tensile strength rated at 5000 foot pounds and weighing in at only 1.76 pounds, the GB420MXZ is ideal for professional level 50cc to 125cc open class racing. Pin length in mm: 15.7mm. Maximum wear life index: 300. Maximum tensile in pounds/feet: 5000 pounds/feet. Master link type: clip. Weight in pounds per 100 links: 1.76 pounds. Maximum cc: 150cc street/125cc off-road. 24.0 links per foot. 12.7mm pin to pin center. 000 miles of street riding or one year of off-road use..
Malcolm Ross jr
Reviewed in the United States on April 2, 2025
Replacement chain for one of my electric dirt bikes
robert sublett
Reviewed in the United States on August 25, 2024
Works as it should
Mosi
Reviewed in the United States on June 8, 2024
Great chain for the price
Nano
Reviewed in the United States on June 14, 2024
I’ve gotten one 3 years ago and it finally snapped on me only cause the chain was loose and it popped off getting wrapped into the sprocket for the 3rd time going 60mph! Well worth the few extra $$ can tell it’s built well .
@tattoosbyjeffjohnson
Reviewed in the United States on December 10, 2020
A+
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