The RK 520 Quick Acceleration Chain and Sprocket Kit, manufacturer part number 4107-099PX and vendor part number 4107-099PX, is designed for Yamaha YZF-R1 models from 2009 through 2014. This performance-focused drivetrain kit combines race-oriented gearing with durable steel components to help deliver quicker acceleration and dependable service for street, sport, and track applications.
The kit includes RK’s premium 520 XW-ring sealed chain and a Driven steel alloy front sprocket with a black case-hardened finish. The sealed-chain design helps retain lubricant and limit contamination, supporting smooth operation and extended wear resistance. Steel sprocket construction provides the durability needed for high-performance riding, while the quick-acceleration gearing is intended to improve throttle response and launch performance compared with standard gearing.
Fitment: Yamaha YZF-R1, 2009-2014. This RK kit is intended as a matched chain and sprocket replacement for compatible YZF-R1 applications. Verify the motorcycle model year and existing drivetrain configuration before installation to ensure proper fitment. Installation should be completed using appropriate motorcycle service procedures, with chain tension and alignment checked after installation.
Features:
- Size: 520 drivetrain configuration
- Model: Quick Acceleration Race Kit
- Brand: RK
- Manufacturer Part Number: 4107-099PX
- Vendor Part Number: 4107-099PX
- Chain Type: Premium XW-ring sealed chain
- Sprocket Material: Durable Driven steel alloy
- Sprocket Finish: Black case-hardened front sprocket
- Performance: Race-oriented gearing designed for quick acceleration
- Fitment: Yamaha YZF-R1 models from 2009 through 2014