Wiseco PK1146 1986-1991 Honda CR80 47.0mm Forged Piston Top End Kit

The Wiseco PK1146 is a complete top end kit designed for 1986–1991 Honda CR80 motorcycles, featuring a 47.0mm (643M) forged piston built to deliver superior performance over the stock OEM components. Wiseco's aerospace-grade alloy construction and dedicated forging process produce an optimal strength-to-weight ratio, making this kit a trusted choice for competitive motocross and off-road racing applications.

Kit Includes:

• Forged Piston (47.0mm / 643M bore) – CNC machined from aerospace alloy with a dedicated forging for precise tolerances and reduced reciprocating mass
• High-Performance Ring Set – Engineered for extended service life and sustained power output
• Wrist Pin – High-quality alloy pin, precision machined for consistent trueness and long-term durability
• Top End Needle Bearing – Premium needle bearing for reduced friction and improved reliability
• Top End Gasket Kit – Premium multi-layer gaskets that meet or exceed OEM sealing standards

Key Features:

• Aerospace alloy construction provides superior strength-to-weight ratio
• Dedicated forging with race-proven cam shape and profile for peak horsepower and service life
• CNC machined for exacting tolerances and consistent fit
• Chosen by professional race teams across all forms of motorcycle racing
• Exceeds OEM standards for materials, sealing, and performance

Whether you're rebuilding a worn top end or chasing more power on the track, the Wiseco PK1146 delivers a complete, race-ready solution for the Honda CR80 engine.