VintCo OW-133-003-S.40 is a second oversize piston kit for 1970-1978 Ossa 250cc models. It is an original OEM-style cast reproduction piston supplied with rings, pin and clips. This piston uses specially located ring pins for use with all 250cc models, including the GP3, and features a standard Plonker skirt length that can be cut to the desired length if required.
Features
OEM-style replacement piston kit for Ossa 250cc models
Includes piston, rings, pin and clips
Specially located ring pins for use with all 250cc models, including GP3
Standard Plonker skirt length can be cut to the desired length if required