OS SPEED SHIMO EDITION 3 COMBO (TB03 EFRA2196 + MR05) COMPLETE SET

This is the O.S. Speed R21 Shimo Edition 3 1:8 on-road engine developed in collaboration with O.S. team driver Takaaki Shimo, this engine features spacers in the exhaust area of the crankcase, which ensure more linear power delivery from low to high revs. The cylinder liner now has nine channels, and the pistons have been re-treated for longer engine life. The carburettor is equipped with a dust ring that prevents fuel leakage and air pockets, ensuring better and more stable idling. Externally, the engine impresses with a deep gold cylinder head and a venturi, giving it a completely new look.

A combination set with the TR03 EFRA2196 and MR05 engines is available for maximum performance.

Technical data:

Displacement: 3.49 cm³ / 0.213 cu.in.

Bore: 16.08 mm / 0.633 in.

Stroke: 17.20 mm / 0.677 in.

Power: 2.80 hp / 2.76 hp / 35,000 rpm

Practical speed range: 4,000–45,000 rpm

Motor weight: 347 g / 12.24 oz.

Included accessories:

Glow plug T-RP7

Venturi φ8.5

Exhaust seal ring

Dust cap set 12-30 (φ3, φ16, φ18)