Wiseco .020 Piston Crankshaft Gasket Set for Yamaha Warrior Raptor 350 1987-2013

Wiseco .020 Piston, Crankshaft and Gasket Set for Yamaha

This Wiseco .020 piston, crankshaft and gasket set is a rebuild package for Yamaha Warrior and Raptor 350 machines, combining a modest overbore piston with a crankshaft and gaskets to restore a worn engine to working condition.

Overview

This Wiseco .020 piston, crankshaft and gasket set supports a full engine refresh on Yamaha Warrior and Raptor 350 machines. The .020 overbore piston keeps cylinder cleanup minimal while the crankshaft addresses bottom-end wear and the gaskets seal the rebuild. Owners and shops handling a worn or damaged engine will find this Wiseco piston and crankshaft kit supplies the core rebuild parts in one package.

Built For Performance

• .020 oversize piston for a light cylinder cleanup and bore refresh
• Wiseco forged piston construction suited to high-compression four-stroke engines
• Crankshaft included to replace worn bottom-end components
• Gasket set provided to seal the top end during reassembly
• Matched components for consistent fit through the rebuild

Fits These Machines

• for Yamaha Warrior 350
• for Yamaha Raptor 350
• for Yamaha Warrior and Raptor 350 models spanning 1987 to 2013

On-The-Job Use

• Engine rebuilds after piston or cylinder wear
• Bottom-end service when crankshaft condition is in question
• Trail and recreation machines receiving a mid-life engine refresh
• Shop repairs where matched piston, crank and gasket parts simplify ordering

Specs At A Glance

Good To Know

Q: Does the .020 piston size need cylinder machining? A: Yes, a .020 oversize piston requires the cylinder to be bored and honed to match for correct piston-to-wall clearance.

Q: Can this set be installed with the engine in the frame? A: Crankshaft replacement generally requires splitting the cases, so most installations are done with the engine removed.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.