

Specs ---------------------------
Stroke volume: 3.49 cc / 0.213 cu.in.
Bore: 16.27mm / 0.641 in.
Stroke: 16.80 mm / 0.661 in.
Output: 2.68 ps / 2.64 hp / 34,000 rpm
Practical rotation speed: 4,000-42,000 rpm
Weight: 352 g / 12.42 oz.
Standard accessory
T plug T-P3 1 piece
Reducer φ6Ⅱ, φ6.5Ⅱ
Exhaust seal ring 1 piece
OS SPEED Dust cap set 12-30 ・ φ3, φ16, φ18 1 each
Inheriting the long stroke of the previous model B2103, which has won numerous major races. The newly designed cylinder / piston uses 3 ports. Achieve torqueful performance by reviewing the timing change and air-fuel mixture flow.
The newly designed crankshaft has undergone OSSPEED's traditional DLC processing to review the timing and optimize the weight balance, so two tungsten weights are installed, resulting in improved idling and slow drop.
By adopting a thrust plate with special treatment on the cover plate, wear due to interference between the connecting rod and the cover plate during rotation is reduced and the engine life is improved.