Piston kit 89.02mm Bore 88.98 Wossner 8581DC (+0.02) KTM
EXC 450 Racing 2003-2007,
BETA
RR450 2005-2009, ATV
POLARIS
Outlaw 450 MXR 2008 - 2011,
Wossner forged pistons are superior in strength and design. Engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part No. 56-W178.C
WOSSNER 8581DA FORGED PISTON KIT Bore 89.00mm
Lock P/N CW20
Pin P/N WP038
Ring Set P/N 890XSY Display (cm3) 449
Hub stroke (mm) 72.00
Clearance (mm) 0.04
Wossner compression Ratio: OEM
OEM Compression ratio: 11.10:1
Dome volume (cm3) +7.10
Compression height (mm) 23.50
Theorectical weight (G)