Renthal Rear Sprocket, Aluminum, 50-Tooth, Silver (123U-520-50GYSI)

Upgrade your motorcycle’s drivetrain with the Renthal 123U-520-50GYSI rear sprocket, engineered for riders who demand efficient power transfer, reduced weight, and dependable durability. This 50-tooth sprocket is CNC-machined rather than stamped, allowing Renthal to produce a precise, computer-aided ultra-light design that helps reduce unsprung weight and improve overall drivetrain response. Its silver finish provides a clean, performance-focused appearance suitable for compatible Suzuki applications.
The rear sprocket is manufactured from high-strength, specially enhanced 7075-T6 aluminum. Compared with a steel sprocket, this aluminum construction is 33% lighter while maintaining the strength needed for demanding riding conditions. The reduced mass helps minimize unsprung weight and supports more efficient power transfer from the engine to the rear wheel, making the Renthal 123U-520-50GYSI a practical choice for performance-oriented maintenance or drivetrain upgrades.
Renthal also incorporates a specially designed tooth profile that helps the chain roll smoothly on and off the sprocket. This profile promotes longer chain and sprocket wear, reduces operating noise, and supports consistent power delivery throughout the drivetrain. Designed for use with a 520 chain, this rear sprocket combines precision machining, lightweight construction, and application-specific fitment for riders seeking reliable performance from a trusted motorcycle component brand.

Features:

• CNC-machined construction: Precision manufacturing provides a lightweight, accurate alternative to stamped sprockets.

• Ultra-light design: Computer-aided engineering helps reduce unsprung weight and improve power transfer.

• 7075-T6 aluminum: High-strength, specially enhanced aluminum offers durability with lower weight than steel.

• 33% lighter than steel: Reduced sprocket weight supports improved drivetrain response and efficiency.

• Special tooth profile: Helps the chain roll smoothly on and off the sprocket for longer wear and reduced noise.

• 50-tooth configuration: Provides application-specific gearing for compatible Suzuki motorcycles.

• 520 chain compatibility: Designed for use with a 520-size motorcycle chain.

• Silver finish: Delivers a clean appearance while complementing performance-focused motorcycle builds.

Ships from Parts Unlimited.