EK/PBR 520M3 12/48 Chain Kit - Ultra-light Sprocket by EK CHAIN. This transmission kit is specifically designed for motocross, consisting of a 520M3 gold chain and a 12-tooth front sprocket paired with a 48-tooth ultra-light aluminum rear sprocket. It is engineered to minimize friction while providing good resistance to traction and abrasion on demanding terrains.
- Type: 520 chain kit (pitch 520)
- Number of links: 112
- Color: Gold / Gold
- Sprocket material: Aluminum (ultra-light)
- Weight: 1.36 kg for 100 links (indicative weight)
- Relative lifespan: 450 (reference for 100 links)
- Tooth composition: 12/48 (sprocket/sprocket)
This kit is aimed at motocross riders looking for a lightweight and responsive transmission for their sessions on loose or rugged terrain. The 12/48 sprocket combination alters engine behavior for a traction range suitable for small-displacement motocross bikes. Regular maintenance and proper tension are recommended to maximize longevity.
Common compatibilities: KAWASAKI KX 125 (KX125L 2002, KX125K 1998, KX125L 2001) — check the sprocket ratio and spacing before installation. Manufacturer reference: Not provided.
