Custom Universal Motorcycle Project Rigid Frame

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This frame, by making your own custom motor mounts is adaptable to many engine and powerplant types, Yamaha XS 650, Harley Davidson, Triumph, Briggs, and many other Japanese, English, and European twins. The rear seat post position, used by many frames with unit motors leaves lots of room for custom instalations. It is a universal frame supplied with 0 stretch and 5 degrees rake. The frame is shown painted and with an XS 650 twin motor and unpainted below. The front end shown and used on my Bertaut & Son Classic is the standard length 41 mm tube new aftermarket replacement that fits an FXWG Harley Davidson Big Twin. The chassis comes with the steering head stamped by the manufacturer with the federally required 17 digit registration number and with the same VIN number supplied on a motorcycle statement of origin (MSO).

Motor mounts have to be fabricated.

XS 650 motor shown with VM 36mm Mikuni carbs above.


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