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O.S. SPEED R2105(V2) 1D900

OS1D900

O.S. SPEED R2105

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292,67 €

-20%

304,86 €

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New OS Speed R2105 replacing the O.S. SPEED R2104 

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

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