Renthal UltraLight Rear Sprocket, 51-Tooth Aluminum, Honda/Yamaha (150U-520-51GBHA)

Upgrade your motorcycle’s drivetrain with the Renthal UltraLight Limited Edition Hard Anodised Rear Chainwheel, part number 150U-520-51GBHA. Designed for select Honda and Yamaha applications, this 51-tooth rear sprocket combines lightweight construction, precise engineering, and dependable power transfer for riders who demand high performance. Its limited-edition finish adds a distinctive appearance inspired by Renthal race equipment used by leading riders in competition.

CNC machined from high-strength 7075-T6 aluminum, the Renthal UltraLight rear sprocket is engineered to reduce rotating mass while maintaining the strength required for demanding riding conditions. Compared with conventional steel sprockets, its aluminum construction is approximately 66% lighter, helping support responsive acceleration, improved handling, and reduced drivetrain weight. The hard-anodized surface provides added protection against wear and helps preserve the sprocket’s appearance during regular use.

Computer-aided engineering and testing help ensure accurate fitment, consistent concentricity, and effective load dispersion across the sprocket. Carefully developed tooth profiling promotes smooth chain engagement and efficient power transfer, helping the drivetrain perform reliably across a wide range of riding conditions. The 51-tooth configuration is intended for applications requiring a specific final-drive setup, so verify compatibility with your motorcycle and existing chain size before installation.

Built with Renthal’s focus on competition-proven performance, the 150U-520-51GBHA rear chainwheel is a practical choice for riders seeking a lightweight, precisely manufactured replacement or performance upgrade. Its aluminum construction, hard-anodized finish, and race-inspired limited-edition design make it well suited to motocross, off-road, and performance-focused motorcycle applications.

Features:

• Brand: Renthal

• Part Number: 150U-520-51GBHA

• Type: UltraLight limited-edition hard-anodized aluminum rear chainwheel

• Tooth Count: 51 teeth

• Material: CNC-machined 7075-T6 aluminum

• Weight Reduction: Approximately 66% lighter than comparable steel sprockets

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

• Tooth Profile: Designed for smooth chain engagement and efficient power transfer

• Fitment: Select Honda and Yamaha motorcycles; verify application before installation

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