PISTON KIT 98-01 YFM600 95.00, WISECO 4797M09500 YAMAHA ATV

Part No. 56-W4797+00A_WI (oro2u.com)
Yamaha SRX600 (1984-1996), Yamaha XTZ 600 Tenere (1984-1996), Yamaha XT600 (1984-1996), Yamaha YFM600 Grizzly (1998-2001),
Wiseco Piston Kit Std. Comp. –

Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which produces higher me 56-W4797+00B.WO”
(Wossner part no 8501DB)

impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance. – See more at: https://www.hardpartsdirect.com/product-detail? sku=4797M09500#sthash.1W2VM7BA.dpuf