
EK/JT 520MRD7 Chain Kit 14/49 - Ultra-light Sprocket
Designed for the motocross world, this EK CHAIN kit combines a robust 520 chain with an ultra-light aluminum rear sprocket. Ideal for riders seeking reliable transmission on demanding terrains, it combines durability and weight savings on the rear wheel without making unverifiable technical promises.
This kit is aimed at motocross and enduro practitioners who want a competition-ready transmission for intense rides. To maintain the longevity of the chain and sprocket, regular maintenance (appropriate cleaning and lubrication) and tension checks are recommended. Compatible with the YAMAHA YZ 400 F (1998 - 400 cc) as stated by the manufacturer for this type of installation.