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O.S. OS Speed B21AD Adam Drake II Edition Off-Road Nitro Buggy Engine & Pipe Combo (Broken In)

Quick Description
Availability: Out of Stock (Item may be available for Drop-Ship)
Manufacturer: OS Engines

The OS Speed B21 Adam Drake II Edition Off-Road Buggy Engine gives you the power needed to make it to the top of the podium. This special Speed B21 engine is 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. 


  • Broken in with Adam Drakes #DrakeIn Service
  • Designed and tested to Adam Drake's race-winning specifications
  • Great for buggies and trucks
  • Redesigned cylinder liner with optimized porting
  • Redesigned DLC crankshaft with double tungsten counterweight
  • Semi-long stroke configuration
  • 6.5 and 8.0 mm carburetor reducers
  • Ceramic rear bearing
  • 21J carburetor
  • Includes 2100/75 Pipe & Manifold

Displacement: 0.213 cu in (3.49cc) 
Bore: 0.646" (16.4mm) 
Stroke: 0.652" (16.55mm) 
Practical RPM: 4,000-42,000 RPM 
Output: 2.65PS 34,000 RPM, 2.61HP @ 34,000RPM 
Weight: 12.45oz (353g) 

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