Renthal Rear Sprocket, 50-Tooth Aluminum, Silver (191U-420-50GESI)

Upgrade your motorcycle’s final-drive performance with the Renthal 191U-420-50GESI rear sprocket. CNC-machined rather than stamped, this aluminum sprocket uses a computer-aided ultra-light design to help reduce unsprung weight and improve power transfer. Its silver finish provides a clean, performance-focused appearance suitable for riders who demand dependable components and precise engineering.
The rear sprocket is manufactured from high-strength, specially enhanced 7075-T6 aluminum, offering a substantial weight advantage over steel while maintaining the strength needed for demanding riding conditions. By reducing rotating and unsprung mass, the Renthal sprocket helps support responsive acceleration, handling, and overall drivetrain efficiency without sacrificing durability.
A specialized tooth profile allows the chain to roll smoothly onto and off the sprocket. This design helps promote longer chain and sprocket wear, reduce operating noise, and transfer power efficiently through the drivetrain. The 50-tooth configuration is engineered for compatible Kawasaki applications and should be matched to the motorcycle’s chain size and final-drive requirements before installation.
Install the Renthal 191U-420-50GESI as a performance replacement for a worn or heavier rear sprocket. Verify fitment, chain compatibility, and the desired gearing setup for your specific motorcycle before purchase. Renthal’s combination of CNC machining, lightweight 7075-T6 aluminum, and optimized tooth geometry delivers a reliable solution for riders seeking improved drivetrain performance.

Features:

• CNC-machined construction: Produced using precision machining instead of stamping for accurate, consistent performance.

• Ultra-light computer-aided design: Helps reduce unsprung and rotating weight while supporting improved power transfer.

• 7075-T6 aluminum construction: High-strength, specially enhanced aluminum delivers a lighter alternative to steel without sacrificing strength.

• Optimized tooth profile: Promotes smooth chain engagement and release for longer wear, reduced noise, and efficient power transfer.

• 50-tooth configuration: Designed for compatible Kawasaki applications and final-drive setups.

• Silver finish: Provides a clean appearance and complements performance-oriented motorcycle builds.

Ships from Parts Unlimited.