WOSSNER PISTON KIT ROTAX SWM250 74.50, WOSSNER 8290D050

Piston kit 74.50mm BORE 74.43 Wossner 8290D050 (+0.50mm) ROTAX
SWM250 1979 - 1982
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-W970+050.WO (ORO2U.COM)
ROTAX SWM250,
WOSSNER PISTON KIT ROTAX SWM250 74.43mm
CLIP P/N CW18
PIN P/N WP033
RING P/N RSB7450 x 2
(WOSSNER PN# 8290D050) Display (cm3) 247
Hub stroke (mm) 57.50
Clearance (mm) 0.06
Wossner compression Ratio: 2 stroke
OEM Compression ratio: 2 stroke
Dome volume (cm3) -
Compression height (mm) 34.00
Theorectical weight (G)