Main features
Based on R2104, almost all the parts has been newly developed.
- New design crankcase, Performance is improved by adopting a new mold.
- New crakshaft by changing the counterweights from 4 to 5mm and optimizing the weight balance, the feeling in low and mid-range power is improved.
- New 9-ports cylinder adapted to the new crankcase internal design.
- New look cooling-head, changed from conventional black color to polished silver with clear coating.
- New backplate with steel thrust plate.
- New main-needle design with double o-rings for more tuning stability.
- New shaped idle-needle for better torque in the low rpm area.
Specifications
Content: 3.49 cc
Bore: 16.08mm
Stroke: 17.20mm
HP: 2.8 ps / 2.76 hp at 33000 r.p.m.
Practical range: 4000-45000 r.p.m.
Weight: 340g
Video Overview
OS SPEED R2105 1/8 On-Road
OS1D900
New OS Speed R2105 replacing the O.S. SPEED R2104
€679,00
Pvp price (with/VAT)
Main features
Based on R2104, almost all the parts has been newly developed.
- New design crankcase, Performance is improved by adopting a new mold.
- New crakshaft by changing the counterweights from 4 to 5mm and optimizing the weight balance, the feeling in low and mid-range power is improved.
- New 9-ports cylinder adapted to the new crankcase internal design.
- New look cooling-head, changed from conventional black color to polished silver with clear coating.
- New backplate with steel thrust plate.
- New main-needle design with double o-rings for more tuning stability.
- New shaped idle-needle for better torque in the low rpm area.
Specifications
Content: 3.49 cc
Bore: 16.08mm
Stroke: 17.20mm
HP: 2.8 ps / 2.76 hp at 33000 r.p.m.
Practical range: 4000-45000 r.p.m.
Weight: 340g
Video Overview
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