This VintCo crankshaft is a newly manufactured reproduction assembly for mid-1970s 250cc Ossa models, covering Phantom, Phantom GP1, GP2, GP3 and ST-1 applications from 1974 to 1977. It is supplied as a complete assembled replacement rather than a rebuilt original unit, and is produced using modern materials and manufacturing techniques for OEM-type fit and performance. The assembly includes a heavy duty Yamaha conversion, a modern rod and bearing design, a heavy duty forged steel connecting rod, and the wrist pin bearing, providing a complete replacement crankshaft for returning the engine to service.

Features

• New reproduction crankshaft, not rebuilt
• Complete assembled replacement unit
• Heavy duty Yamaha conversion installed
• Modern rod and bearing design
• Wrist pin bearing included
• Intended for mid-1970s 250cc Ossa applications

Specifications

• VintCo Part Number: OW-123-010M
• Product category: Crankshaft
• Engine capacity compatibility: 250cc
• Connecting rod: Heavy duty forged steel

Vehicle Fitments

• 1974 Ossa Phantom 250cc
• 1975 Ossa Phantom GP1
• 1976 Ossa Phantom GP2
• 1977 Ossa Phantom GP3
• 1977 Ossa ST-1