Wiseco .040 Piston Crankshaft Gasket Set for Yamaha Warrior Raptor 350 1987-2013

Wiseco .040 Piston, Crankshaft and Gasket Set for Yamaha

This Wiseco .040 piston, crankshaft and gasket set is a top-end and bottom-end rebuild package for Yamaha Warrior and Raptor 350 machines, giving you the matched piston, crankshaft and sealing components needed to bring a worn engine back to spec.

Overview

This Wiseco .040 piston, crankshaft and gasket set is a matched rebuild package for Yamaha Warrior and Raptor 350 machines. The .040 overbore piston and crankshaft work together with fresh gaskets to restore compression and reliability during a full engine service. Riders and shops rebuilding a tired top end or bottom end will find this Wiseco piston and crankshaft kit covers the essential hard parts in one order.

Built For Performance

• .040 oversize piston for a rebuild after cylinder wear or damage
• Wiseco forged piston construction built for high-compression four-stroke use
• Crankshaft included to address worn bottom-end bearings and rod journals
• Full gasket set supplied to seal the top end during reassembly
• Components matched as a set for consistent fit during 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

• Full engine rebuilds after piston scoring or cylinder damage
• Bottom-end freshening when crankshaft play is out of spec
• Trail and dune riding machines getting a mid-life top-end refresh
• Shop builds where matched piston, crank and gasket parts save sourcing time

Specs At A Glance

Good To Know

Q: Does the .040 piston size require cylinder machining? A: Yes, a .040 oversize piston calls for the cylinder to be bored and honed to match, so confirm the machine work before assembly.

Q: Is this set enough for a complete engine rebuild? A: It covers the piston, crankshaft and gasket components listed, but bearings, seals and other wear items may still need separate replacement.

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