4675M07200 Wiseco Piston Kit for Yamaha Timberwolf 250 1990-2000 .040 72mm

Wiseco .040 Piston Kit for Yamaha Timberwolf 250

This Wiseco .040 over piston kit (cross-reference 4675M07200) is a 72 mm, 8.7:1 compression rebuild component made for the Yamaha Timberwolf 250, providing the oversize option needed when the cylinder requires boring.

Overview

This Wiseco .040 Piston Kit for Yamaha Timberwolf 250 is the oversize rebuild option for 1990-2000 models with worn or scored cylinders. The 72 mm, 8.7:1 piston kit restores compression after a bore job and keeps the engine running strong. Riders rebuilding a tired Timberwolf top end will find this Wiseco piston kit matches the machined oversize bore.

Built For Performance

• Forged piston construction for durability under load
• 72 mm bore size for .040 over cylinders
• 8.7:1 compression ratio maintains stock-like performance
• Cross-reference 4675M07200 confirms application fit
• Kit includes piston, rings, pin, and clips for a complete top-end refresh

Fits These Machines

• for Yamaha Timberwolf 250 (1990-2000) with .040 overbore

On-The-Job Use

• Top-end rebuild following cylinder boring or honing
• Recovering worn engines with scored or out-of-spec bores
• Restoring power on high-hour trail and utility machines
• Shop rebuilds where an oversize piston is required

Specs At A Glance

Good To Know

Q: When should I use a .040 over piston? A: This size fits cylinders that have been bored .040 over stock to clean up wear or damage. Measure your bore before ordering to confirm the correct oversize.

Q: Does the kit include rings and pin? A: Rebuild kits of this type typically ship complete with piston, rings, wrist pin, and clips. Verify contents against your service manual during assembly.

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