
EK/PBR 520MRD7 13/49 Chain Kit - Ultra-light Sprocket by EK CHAIN: a kit designed for motocross riders looking to reduce unsprung weight while maintaining a robust transmission. This combination of a 13-tooth sprocket / 49-tooth sprocket and a 520 pitch chain meets the demands of the terrain: sand, bumps, and repeated jumps. Gold/gold finish for a racing look and good visibility during inspections.
Designed for the Cross world, this kit is suitable for machines such as the YAMAHA YZ 450 F (2022), YZ 450 F (CJ23) 2021, or YZ 450 FX 2020, and remains relevant for other 450 cc models in the 520 format. The ultra-light aluminum sprocket helps reduce inertia for sharper accelerations, while the gold finish facilitates visual inspection after muddy rides.
Note: Manufacturer reference not provided. Check the number of links and pitch before installation to ensure compatibility with your motorcycle.