
The EK/PBR 520MRD7 13/50 chain kit is designed for motocross riders who demand lightweight and durability on challenging terrains. Comprising a high-performance 520 chain and a 13-tooth sprocket paired with an ultra-light 50-tooth aluminum rear sprocket, this kit reduces unsprung mass for improved handling and sharper throttle response without compromising traction.
Designed to minimize friction while providing excellent abrasion and traction resistance, this drivetrain is aimed at motocross and off-road riders seeking responsiveness and durability. Compatible with SUZUKI RM-Z 450 (2010-2012), this kit features a polished finish and a golden aesthetic that complements racing setups. Manufacturer reference not provided.