O.S. Speed B21 Adam Drake Edition 3 .21 Nitro Engine – 1/8 Off-Road Buggy

O.S. item #1CJ00

The O.S. Speed B21 Adam Drake Edition 3 is a competition-focused .21 nitro engine developed in collaboration with O.S. international team driver Adam Drake. Built for 1/8-scale off-road buggy racing, this engine is designed to deliver smooth power, improved drivability, and consistent race performance in demanding track conditions.

The B21 Adam Drake Edition 3 features boost-bypass crankcase processing, which helps the engine run smoother and makes throttle control easier across the powerband. This gives racers a more manageable feel when accelerating through rough sections, low-grip areas, and changing off-road surfaces.

For racers looking for a premium O.S. Speed buggy engine with a smooth, controllable powerband, the B21 Adam Drake Edition 3 is a strong choice for competitive 1/8 nitro off-road racing.

Key features

• -Genuine O.S. Speed B21 Adam Drake Edition 3
• -Developed with O.S. team driver Adam Drake
• -Designed for 1/8-scale off-road buggy racing
• -.21 nitro competition engine
• -Boost-bypass crankcase processing
• -Smooth, controllable power delivery
• -Easier drivability across changing track conditions
• -Race-focused O.S. Speed performance

Specs.
Displacement： 3.49cc / 0.213 cu.in.
Bore: 16.4mm / 0.646 in.
Stroke: 16.55mm / 0.652 in.
Output: 2.65 ps / 2.61 hp / 34,000 RPM
Practical RPM range: 4,000-42,000 RPM
Engine Weight: 350g / 12.35oz

Standard accessories included with engine:

-21J slide carburetor

-Blue-anodized 6.5mm (for Buggy) and 7.5mm (for Truggy) carburetor restrictors

-O.S. Speed P3 Gold ultra-hot glow plug

-Exhaust seal ring, engine-to-header gasket, and header-to-muffler gasket

-3mm, 16mm, and 18mm protective caps

Free ground shipping.

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