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O.S.SPEED B2105
OS1EK00
O.S.SPEED B2105
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Based on O.S. SPEED B2104, the crankshaft and C&P have been revised.
Not only the power characteristics but overall power delivery has improved.
Compared to the B2104, it has more torque from mid to top end, and torque from low rpm feels flatter, making it easier to use compare to B2104.
Drivability has been improved by reducing the weight of the cooling-head.
For the optimal performance, the newly designed crankshaft has a revised timing and counterweight balance along with O.S.SPEED's traditional DLC coating.
With the re-designed crankshaft, power is very linear and you get power at any RPM without any stress.
Cylinder and liner: we evised the shape of the exhaust port for better performance.
The carburetor is based on the 22E with an improved idle adjustment valve, a more stable fuel supply is obtained.
The thrust plate with surface treatment embedded in the cover plate reduces friction against a connecting rod to improve life and stability.
Features:
Specifications:
Displacement: 3.46cc
Output: 2.68ps @ 34,000 rpm
Bore: 16.27mm
Stroke: 16.80mm
Practical RPM Range: 4,000 ~ 42,000 rpm
Weight: 352g
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