
JT 420 HDR Chain Kit - 11/50-126: a simple and reliable transmission set for small engines. This JT DRIVE CHAIN pack includes a reinforced 420 HDR chain, an 11-tooth front sprocket, and a 50-tooth rear sprocket made of standard steel — all calibrated for urban, leisure, and pit bike use.
Designed for light motorcycles (50–125 cm³), mopeds, pit bikes, and minibikes, this kit offers a ready-to-install solution to refresh your transmission. The reference 11/50-126 avoids approximations: the chain is already sized, you just need to check the tension and perform regular lubrication for optimal longevity.
Usage examples: motorcycles 50–125 cm³, mopeds, and pit bikes — compatible with models such as the BETA RR 50 Motard Track (2008). Check the manufacturer's recommendations before installation.