The O.S. Speed B2101 is available in a special Gold Edition to commemorate O.S.’s 80th anniversary. A gold cylinder head and carb insert makes it extra-attractive for collectors, while the legendary O.S. performance makes it a must for high-octane racing. It is a high performance engine produced by O.S.'s Speed Team technicians.
The B2101 was developed to fill a hole in the O.S. Engine line with an engine that produces a smooth power band, ideal for slick or blown-tracks. Its square 16.4mm bore/stroke dimension, combined with a DLC coated and balanced OS SPEED tuned crankshaft creates the perfect blend of power and driveability. Other features include a low slung, low CG cooling head that hangs below the engine case, for improved handling, and the renowned 21J carburetor for easy tuning adjustments.
|Displacement||3.46 cc / 0.211 cu.in.|
|Bore||16.4 mm / 0.646 in.|
|Stroke||16.4 mm / 0646 in.|
|Output||2.65 ps / 2.61 hp / 34,000 r.p.m.|
|Practical R.P.M.||4,000-42,000 r.p.m.|
|Weight||352 g / 12.42 oz. (Engine)|
All special parts assembled in the engine are not available as spare parts. Use standard parts when replacing them.
The following are special parts of the limited edition: