O.S.SPEED R21 Shimo Edition 3 Racing Engine Combo

O.S.SPEED R21 Shimo Edition 3 racing engine – combo with TR03 and MR05

The O.S.SPEED R21 Shimo Edition 3 is the latest collaboration engine with O.S. team driver Takaaki Shimo. With the included exhaust spacers, the engine can be made more linear from bottom to top, so you can tailor its performance to the track and conditions. The cylinder liner now has 9 ports and a treated piston that gives a longer life than the previous untreated 9-port version.

The carburettor has a dust cover ring that prevents fuel leaks and air in the fuel line and gives a more stable idle. The connecting rod is the 'R' rod from the R2106, built for tough on-road races, the new head has better heat management, and the rear bearing is a ceramic ball bearing. The head and venturi are finished in deep gold, and the combo set comes with a TR03 EFRA2196 pipe and MR05 manifold.

Features

• 9-port liner with treated piston for longer life
• Exhaust spacers for adjusting the power curve
• Dust cover ring on the carburettor for a stable idle
• 'R' connecting rod from the R2106
• New head with improved cooling
• Ceramic rear ball bearing
• Head and venturi in deep gold

Specifications

• Displacement: 3.49 cm³
• Bore: 16.08 mm
• Stroke: 17.20 mm
• Power: 2.80 PS / 2.76 hp at 35,000 rpm
• Speed range: 4,000-45,000 rpm
• Weight: 347 g

What's in the box

• TR03 EFRA2196 exhaust pipe and MR05 manifold
• T-RP7 glow plug
• Reducer φ8.5
• Exhaust gasket
• Dust cap set 12-30 (φ3, φ16, φ18)

Suitable for

• 1/8 on-road racing cars

We ship with GLS:

From our warehouse in Denmark.
Shipping is calculated at checkout.
Business customers are welcome.