
EK/PBR 520M3 Chain Kit 13/51 - ultra-light sprocket: a ready-to-install set for motocross, consisting of a 520M3 chain and a lightweight aluminum sprocket in 13/51. Designed to withstand the demands of trails and competition courses, this kit combines a golden finish with components engineered to minimize friction while providing good resistance to tension and abrasion.
The kit is aimed at motocross and enduro riders looking for a lightweight and robust solution for their drivetrains. The golden hue adds a racing look while the aluminum sprocket reduces rear wheel inertia. Compatible with many motocross models — examples: KTM 125 SX (2020, 2021, 2022) — be sure to check the desired final ratio before installation.