Wiseco Piston Kit with Gaskets, 66.40 mm for Yamaha 2-Stroke (PK1704)

Upgrade your Yamaha 2-stroke engine with the Wiseco PK1704 Piston Kit with Gaskets. Designed for endurance riding and sustained high-RPM operation, this forged and machined piston kit delivers dependable performance, enhanced wear resistance, and responsive throttle control. The 66.40 mm piston is engineered for riders who demand consistent performance under demanding operating conditions.
The piston features Wiseco’s Electra-Coated crown, ring grooves, and pin bores to help protect critical surfaces from wear. An ArmorGlide® skirt coating helps reduce friction and provides added protection against micro-welding, galling, and detonation-related damage. Additional lightening operations reduce reciprocating mass, helping improve throttle response without compromising the durability required for hard-use 2-stroke riding.
Each Wiseco PK1704 kit is engineered, forged, and machined in the USA. The package includes the piston, ring set, wrist pin, circlips, bearing, and gaskets for a convenient installation solution. Use this complete piston kit to support reliable engine rebuilding and restore performance in compatible Yamaha applications.

Features:

• Electra-Coated crown, ring grooves, and pin bores help maximize wear resistance

• ArmorGlide® skirt coating helps protect against micro-welding, galling, and detonation

• Designed for endurance and sustained high-RPM 2-stroke riding

• Additional lightening operations help enhance throttle response

• Forged and machined in the USA

• Kit includes piston, ring set, wrist pin, circlips, bearing, and gaskets

Ships from Parts Unlimited.