Renthal Ultralight Aluminum Rear Sprocket, 50-Tooth Black (518U-420-50GPBK)

Upgrade your motorcycle’s drivetrain with the Renthal 518U-420-50GPBK Limited Edition Hard Anodised Ultralight Rear Sprocket. Designed for riders who demand performance, durability, and distinctive styling, this black aluminum rear chainwheel delivers reliable power transfer while reducing unsprung rotating weight compared with a conventional steel sprocket. Its limited-edition finish provides a unique appearance inspired by the equipment used by top Renthal riders during the Monster Energy Supercross Series.

The Renthal Ultralight Rear Sprocket is CNC machined from high-strength 7075-T6 aluminum for accurate manufacturing and dependable service. Computer-aided engineering and testing help ensure precise fitment, concentricity, and balanced load dispersion across the sprocket. The carefully developed tooth profile promotes smooth chain engagement and efficient power transfer, making it an excellent choice for motocross, off-road, and high-performance applications.

Designed for compatible GasGas, Husqvarna, and KTM motorcycles, the Renthal 518U-420-50GPBK combines race-inspired construction with practical drivetrain performance. The 50-tooth configuration can help tailor final-drive gearing to suit riding conditions and rider preference. Install this genuine Renthal rear chainwheel as part of a properly matched chain and front sprocket setup for consistent operation and long-lasting performance.

Features:

• Brand: Renthal

• Part Number: 518U-420-50GPBK

• Product Type: Ultralight aluminum rear sprocket

• Tooth Count: 50 teeth

• Material: CNC-machined 7075-T6 aluminum

• Finish: Black hard anodized

• Design: Computer engineered and tested for precise fitment, concentricity, and load dispersion

• Tooth Profile: Engineered for smooth engagement and maximum power transfer

• Application: Compatible with select GasGas, Husqvarna, and KTM motorcycles

• Edition: Limited Edition Renthal Ultralight chainwheel

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