Description
OS SPEED support driver Introducing OSSPEED R21 SHIMO EDITION 2 created by feeding back the know-how of Mr. Akira Shimotaka. The exterior uses a special color champagne gold outer head and reducer. Based on the R21 series, a newly designed crankshaft that emphasizes connection from low speed to high speed has been adopted, and the cylinder liner has undergone new processing that can reduce seizure, achieving performance that can win the race. It will be released as a combo set that includes TR02 (EFRA2165) + MR03-WC to maximize the power of the engine.
With TR02 EFRA2165 & MR03-WC
Includes
・MR03-WC Exhaust manifold・Exhaust seal ring
・Flywheel collet ・Dust cap set 12-30 3mm/16mm/18mm
Specifications
| Displacement | 3.49 cc / 0.213cu.in. |
|---|---|
| Bore | 16.08mm / 0.633 in. |
| Stroke | 17.20mm / 0.677 in. |
| Output | 2.8 ps / 2.76 hp / 35,000 r.p.m. |
| Practical RPM range | 4,000-45,000 r.p.m. |
| Engine Weight | 340g / 11.99oz. |
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