Features:

• All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life.


• Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect finish with no size variation. Wiseco pistons can be installed in any of today*s cylinder bore compositions


• Wiseco*s state-of-the-art computerized manufacturing facility is dedicated to supplying both the high-perfomance racer and recreational enthusiast with the finest forged piston available in today*s market place.

Fitment:
1984 Yamaha YZ490
1985 Yamaha YZ490
1986 Yamaha YZ490
1987 Yamaha YZ490
1988 Yamaha YZ490
1989 Yamaha YZ490
1990 Yamaha YZ490
1992 Yamaha WR500
1993 Yamaha WR500