OS Speed B21 Adam Drake Edition


1a20c-manual.pdf (1.71M)
OS Speed B21 Adam Drake Edition


Κατηγορία: Κινητήρες 3.5cc
Κατασκευαστής: OS engines
Κωδικός: OSMG2066


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!  


  • Designed and tested to Adam Drake's race-winning specifications.
  • Great for buggies and trucks.
  • Redesigned cylinder liner with Drake-specified porting.
  • Newly designed DLC crankshaft with double tungsten counterweight.
  • New semi-long stroke design offers the perfect blend of torque and high-end performance.
  • 6.5 and 8.0 mm carburetor reducers.
  • Ceramic rear bearing.
  • Easy-to-tune 21J carburetor.
  • Speed Gold P3 Turbo glow plug.

The Set contains:
T-2090SC Tuned Pipe Set (OSMG2953) 
6.5 mm and 8.0 mm carb reducers 
21J carburetor
Speed Gold P3 Turbo glow plug

Output [kW / (PS)]: 2,61 kW (PS)
All-up weight [g]: 353 g
rpm range, approx.: 4000 - 42000 U/min
Applicable for: Competition 
Bore [mm]: 16,40 mm
Output [kW / PS] at [rpm]: 2,61 (PS) / 34000 U/min
Stroke [mm]: 16,55 mm
Brand: O.S. 
Model: 2-Stroke Nitro