Renthal Aluminium Ultra-Light Self-Cleaning Hard Anodized 123U - 520 SprocketRef : RT00339A / 1121387

The RENTHAL Ultra-Light 123U - 520 sprocket is a part designed for demanding riders. Machined from 7075 T6 aluminum, it combines lightweight construction with mechanical strength for muddy environments on motocross tracks as well as for road accelerations. Its precision machining and hard anodization enhance the finish while improving surface resistance.

• Anti-mud profile designed to facilitate the evacuation of debris and limit chain snags.
• Strategic lightening holes: reduced mass without compromising rigidity.
• Hard anodized finish for better wear resistance and a polished look.
• Specifications: 50 teeth / pitch 520 — type 123U, aluminum color.

On the track or on a ride, this sprocket aims to reduce unsprung inertia and optimize transmission by limiting friction losses between the chain and the sprocket. Designed for MX, SX, and enduro, it naturally fits on motocross and roadster machines compatible with the 520 pitch. Manufacturer reference: 123U-520-50GPHA.