Renthal Ultra-Light Self-Cleaning Aluminium 518U - 420 SprocketRef : RT00229A / 1129514005

RENTHAL UltraLight 518U - 420 (50 teeth): an aluminum sprocket designed for motocross, combining lightweight and precision machining. CNC machined in Manchester from 7075 T6 aluminum, it offers optimized concentricity and tooth profiling for smooth power transfer and controlled wear. The mud-resistant design minimizes dirt accumulation and facilitates clearing during muddy outings.

• Manufacturer reference: 518U-420-50GPOR
• Color: Orange
• Material: 7075 T6 Aluminum
• Number of teeth: 50
• Chain pitch: 420
• Type: Standard / UltraLight

Engineered and tested using computer simulations, this Renthal sprocket features tight tolerances to ensure reliable concentricity and even load distribution across the teeth. The specific profile minimizes grip loss between the sprocket and chain, contributing to a responsive acceleration—an advantage on technical motocross tracks.

Suitable for motocross practices and the mentioned small displacement models (KTM 65 SX, GAS GAS MC 65 2025), it fits on 420 pitch drivetrains; however, please check the compatibility of your spacings and spacers before installation. Ideal for those looking to reduce unsprung mass without sacrificing durability.