Engine: XR1000-based engine with cutaway timing case giving access to the oil pump (high delivery type) and later primary cases which are better for racing (narrower). The crankcases have been strengthened in the usual places. The crankshaft has been reworked and now has race connecting rods from Carrillo.
XR cylinder heads have been reworked with twin plugs, ported with bigger titanium valves angled at 60 degrees and operated by roller cam followers, pushrods and rocker arms. Gases are supplied by two 40mm Mikuni flat slide carburettors. The gases are carried away by a Buell “works” exhaust system.
Each cylinder barrel has been lightened and a “Gilardoni” forged piston fitted (intended for a Ducati). The motor has a displacement of 997.10 cc. with 81mm bore X 96.80mm stroke, and four Storz camshafts with eccentric adjustment. Gearbox is standard but carefully assembled. A modified XR clutch and chain primary are fitted. The engine running on race fuel (115 octane) produces 94HP, with incredible delivery due to an almost flat torque curve.
Chassis: Buell RR1000 chassis none VIN and preproduction. The rear swing arm is of the type designed by Erik Buell for the Pirelli radial tyre in 1986. It’s approximately 50mm longer than the road RR1000 swing arm. Forks are very special 42 mm upside-down Ohlins: these are the rare early type used by many of the GP and WSB teams in the late 80s. Rear shock is Ohlins fully adjustable.
Other Chassis Parts: The fairing was made of composite material especially for this RR1000. The fuel tank is handmade and alloy, produced by Giancarlo Berti. The engine oil tank was also made specifically and placed under the saddle, while the original version was positioned at the front under the engine.
All linkages, fittings and brackets are handmade for this bike.