OS Speed ​​21. Engine R21 "Shimo Edition 2" SET - 1DJ00

OS Speed ​​21. Engine R21 "Shimo Edition 2" SET - 1DJ00

We developed the OSSPEED R21 Shimo edition in collaboration with Takaaki Shimo, a multiple podium winner in the IFMAR 1/8 Racing World Championship. It is a 7-bolt engine with a new cylinder liner that has additional holes to reduce overheating. The cooling head and the 8.5 mm carburettor throttle are anodized in the special color champagne gold. The crankshaft is modified to accommodate his desire for a smooth power transition from low to high speeds.

For the first time we made the combination of TR02 (EFRA2165) muffler with MR03-WC manifold to dedicate this special edition.

This is a combo set:

• Engine R21 Shimo Edition 2
• TR02 (EFRA2165) resonance tube
• MR03-WC manifold

It is a 7-port engine with a new cylinder liner that has additional holes to reduce overheating.

The crankshaft is modified to meet his preference for smooth power transition from bottom to top speed.

The cooling head and the 8.5 mm carburettor throttle are anodized in the special color champagne gold.

Specifications:

• Displacement：3.49cc / 0.213cu.in.
• Bore: 16.08mm / 0.633 in.
• Stroke: 17.20mm.
• Power 2.8 hp / 2.76 hp / 35,000 rpm.
• Practical speed range: 4,000-45,000 rpm.
• Weight: 340g / 11.99 oz.
• Standard accessories：
• Glow plug RP7/protective cap set/exhaust sealing ring
• TR02 EFRA2165 /MR03-WC silencer and exhaust manifold
• OS SPEED Flywheel Colette