PISTON KIT POLARIS 500 99.20, WISECO 4807M09920

Part No. 56-W4807.WI (oro2u.com)
Wiseco 99.20mm piston kit
POLARIS Outlaw 500 (Hi comp 12.5:1) 2006-2009
Outlaw 500 LE 2007 Predator (Hi comp 12.5:1)
Polaris 2003-2007 500cc [12.5:1]

(Wiseco part no 4807M09920)
Piston ring info. 3905XK
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 mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance.