OS Engines Speed Tuned B21 Drake Edition 2

OS Engines

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Designed to dominate.

Power your way to the podium with this special Speed B21 engine that's packed with upgrades from champion Adam Drake. It’s a terrific choice for trucks and buggies that delivers competition-caliber performance for demanding drivers. Featuring a semi-long stroke, this engine also boasts a DLC crankshaft with double tungsten counterweight and a redesigned cylinder lining with updated porting. Be ready for the big leagues with the Speed B21 Adam Drake Edition 2!

  • Designed and tested to Adam Drake's race-winning specifications.
  • 6.5 and 8.0 mm carburetor reducers.
  • Ceramic rear bearing.
  • Newly designed cylinder liner with new porting.
  • Great for buggies and trucks.
  • Newly designed DLC crankshaft with double tungsten counterweight.

Technical Specifications:

Displacement: 3.49cc

Carburetor Type: 6.5 and 8mm venturi, Slide

Material: Aluminium

Adjustment Needles: 4

Glowplug Type: Turbo

Exhaust Position: Rear

Fuel Type: 25% (Recommended)

Bore: 16.4mm

Stroke: 16.55mm

Pratical RPM: 4,000-42,000

Output: 2.61hp @ 34,000 RPM

Weight: 353g

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