Renthal 257-428-14GP Front Sprocket, 14-Tooth for Yamaha and Kawasaki (257--428-14GP)

Upgrade your motorcycle’s final drive with the RENThAL 257-428-14GP Front Sprocket, engineered for compatible Yamaha and Kawasaki applications. This 14-tooth sprocket is CNC-machined from case-hardened and core-refined 655M13 nickel chromium steel, providing a strong foundation for dependable performance and extended service life in demanding riding conditions.
The sprocket features self-cleaning mud grooves machined into each tooth. These grooves help prevent mud and debris from building up between the chain and sprocket, supporting smoother engagement while helping reduce wear caused by abrasive contamination. The design is well suited for off-road, motocross, and other environments where dirt and mud can affect drivetrain performance.
Its ultralight construction delivers a 10–15% weight savings compared with conventional sprocket designs, helping reduce rotating mass without sacrificing the strength needed for reliable power transfer. The RENThAL 257-428-14GP combines precision manufacturing, durable nickel chromium steel, and practical debris management for riders seeking a performance-focused replacement front sprocket. Verify chain size, tooth count, and motorcycle fitment before installation.

Features:

• 14-tooth front sprocket for compatible Yamaha and Kawasaki motorcycles

• CNC-machined from case-hardened and core-refined 655M13 nickel chromium steel

• Self-cleaning mud grooves in each tooth help prevent debris buildup

• Groove design helps increase wear resistance in muddy and abrasive conditions

• Ultralight construction provides a 10–15% weight savings

• Precision-engineered RENThAL replacement component for dependable chain engagement

Ships from Parts Unlimited.