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Press Release From OS Engines:
www.osspeed.com/eng/index.htm
OS Speed have developed the R21 Shimo edition collaborated with Takaaki Shimo, a multiple podium winner of the IFMAR 1/8 Racing World Championship. It is a 7-port engine with a new cylinder liner, which has extra holes to reduce overheating. The cooling head and 8.5mm carburetor restrictor are anodized in the special color; champaign gold. The crankshaft is modified to meet his preference, smooth power transition from bottom to the top speed. For the first time we make the combination of TR02 (EFRA2165) silencer with MR03-WC manifold to dedicate to this special edition.
Spec.---------------------------
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.
Weight:340g / 11.99 oz.
Standard accessories：
Glow plug RP7 /Dust cap set/Exhaust seal ring
TR02 EFRA2165 /MR03-WC Silencer & Exhaust Manifold
O.S. SPEED Flywheel Colette
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