OS Speed R21 Euro II Engine Box + 2098 Resonator + MR02 Elbow - Presentation:
This engine inherits the smooth and easy-to-use feel of its predecessor, OS SPEED R21 EURO Spec. By revising the crankshaft counterweight, the power delivered at low and mid range has been improved . The smooth rev drop and idle stability are also improved, and the optimal performance is demonstrated even in the long and difficult racing scene. Succeeding the previous model, every part has been improved , including the outer head with a new design to improve cooling performance.
OS Speed R21 Euro II engine - Characteristics:
- For 1/8 Track
- Displacement of 3.49cc
- 16.08mm bore
- 17.2mm stroke
- Operating speed from 4,000 to 45,000 rpm
- Announced power of 2.76 hp at 35,000 rpm
- Weight of 340gr
- Candle: RP7
