Wiseco PK1712 Pro-Lite Top End Piston Kit Bore - 49mm

The Wiseco PK1712 is a complete Pro-Lite top end piston kit engineered for the 1988–1992 Yamaha YZ80, featuring a 49mm (1.929 in.) bore with Wiseco's 569M designation. This kit delivers everything needed to perform a full top end rebuild or overbore in a single purchase, eliminating the need to source individual components separately.

Wiseco's Pro-Lite forged pistons are manufactured using a dedicated forging process that produces a superior strength-to-weight ratio compared to cast alternatives. The lightweight piston design promotes instant throttle response, while the computer-engineered skirt profile minimizes cylinder wall friction for improved efficiency and longevity. Anti-detonation grooves and optimized ring land geometry work together to eliminate ring blow-by and maximize performance across the RPM range.

Kit Contents:

• Wiseco forged Pro-Lite piston (49mm bore)
• Piston ring(s)
• Wrist pin
• Circlips
• Top end gasket set

Key Features:

• Forged aluminum construction for improved tensile strength and service life
• Dedicated forgings allow for optimized strength-to-weight ratio
• Lightweight piston design for instant throttle response
• Computer-engineered skirt profile minimizes cylinder wall friction
• Anti-detonation grooves eliminate ring blow-by
• High-quality gasket set engineered for compatibility with Wiseco pistons
• All components sourced and matched in-house for a complete one-stop rebuild solution

Wiseco has been manufacturing forged performance pistons since 1940 and remains the only major aftermarket piston brand in the United States that uses exclusively the forging process. The PK1712 is part of Wiseco's extensive powersports piston kit lineup, designed and built specifically for the YZ80's 2-stroke engine.