WISECO 642M06700 Standard Dirt Bike Piston

Forged from high-silicon aluminum alloy for maximum strength and dependability.

Innovative forging design and piston skirt provide maximum horsepower and torque.

Wiseco High-Performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise).

Oversize pistons require cylinder sleeving.

The WISECO 642M06700 Standard Dirt Bike Piston is a dependable replacement component for maintaining the performance and serviceability of compatible off-road motorcycle engines. Designed for standard-bore applications, this piston is intended for riders, technicians, and engine builders seeking a properly matched replacement rather than an oversized or performance-bore component. Its standard sizing supports direct replacement when the cylinder remains within the manufacturer’s approved specifications and does not require boring for an oversize piston.
Before installation, verify the piston application, engine model, bore condition, piston-to-cylinder clearance, ring compatibility, and all manufacturer service specifications. Proper preparation and measurement are essential for reliable operation, especially when rebuilding an engine or replacing a worn piston. Inspect related components, including the cylinder, wrist pin, circlips, piston rings, connecting rod, and crankshaft, to help ensure the complete assembly is ready for service. Follow the engine manufacturer’s procedures for installation, break-in, lubrication, and torque requirements.
WISECO is recognized by powersports professionals for producing engine components used in demanding motorcycle and racing applications. The 642M06700 piston is supplied as an individual unit and is identified by part number 642M06700 for accurate ordering and application reference. Use the part number and your motorcycle’s exact year, make, model, engine configuration, and bore specifications to confirm