WISECO 4649M09200 Piston Kit 92.00/Std 12.5:1 for Yamaha

The WISECO 4649M09200 Piston Kit is designed for select Yamaha WR400F and YZ400F applications. This forged piston is manufactured from high-silicon, low-expansion aluminum to provide strength, reduced weight, improved heat transfer, and long service life.

A diamond-turned finish, produced on CNC computer-controlled turning centers, provides a precise surface with consistent sizing. The piston is suitable for installation in today’s cylinder bore compositions. WISECO manufactures its forged pistons for both high-performance racing and recreational use.

Fits 1998–2000 Yamaha WR400F and 1998–1999 Yamaha YZ400F models. Part number: 4649M09200.

Features:

• Forged from high-silicon, low-expansion aluminum for strength, reduced weight, improved heat transfer, and longer life
• Diamond-turned finish produced using CNC computer-controlled turning centers
• Consistent sizing with a precise finished surface
• Suitable for installation in today’s cylinder bore compositions
• Fits 1998–2000 Yamaha WR400F and 1998–1999 Yamaha YZ400F applications
• Part number: 4649M09200

Fitment:
1998 Yamaha WR400F
1998 Yamaha YZ400F
1999 Yamaha WR400F
1999 Yamaha YZ400F
2000 Yamaha WR400F