Rear Sprocket Grooved – Silver 520-50 Teeth

Description

The Renthal Ultralight Rear Sprocket is a high-performance upgrade designed for 1993-1998 Yamaha YZ 125, YZ 250, and WR 400 F motorcycles. Manufactured from a specially enhanced 7075-T6 aluminum alloy, this sprocket is CNC-machined to precise tolerances, making it 66% lighter than steel while maintaining exceptional durability. It features advanced tooth profiling for maximum power transfer and improved chain life, as well as self-cleaning mud grooves to prevent dirt accumulation and enhance wear resistance. Engineered for the demands of Supercross, Motocross, and Enduro racing, this sprocket combines a high-strength base material with a hard-wearing surface treatment for extended lifespan and reliable performance.