O.S. Speed B21 AD3 Adam Drake 3 Competition .21 Nitro Engine
- $281.15
- Brand: O.S. Engine
- Product Code:1452944
- Availability:In Stock
The O.S. Speed B21 AD3 Adam Drake 3 Competition .21 Nitro Engine is the latest evolution of this potent racing engine. Designed in collaboration with the legendary Adam Drake this AD3 edition features several updates and impr..
Tags: Engines/Fuel, O.S., Speed, B21, AD3, Adam, Drake, Competition, .21, Nitro, Engine, O.S. Speed B21 AD3 Adam Drake 3 Competition .21 Nitro Engine buy in
Featuring a semi-long stroke configuration, this engine boasts a DLC crankshaft with larger double tungsten counterweights and a unique cylinder design that’s exclusive to the Drake edition engines. These changes will provide smoother low end power and more overall torque than the previous model. The AD3 is an excellent choice for both buggy and truck racing as it provides a linear power band, exceptional fuel mileage and tons of overall power.
- Buggy: 2100SC pipe and 75mm manifold
- Adam Drake’s unique engine specs not used on any other O.S. Speed engine
- Great for buggy and truck racing
- Updated cooling head; 3mm lower height for low gravity and 14g lighter. Black/blue double anodized head.
- Back plate with steel lining like B2104 for friction resistance
- Updated crankcase inner design for linear power transition from low–middle–high speed
- Redesigned cylinder liner with optimized porting
- DLC crankshaft with larger double tungsten counterweight
- Semi-long stroke configuration
- Blue anodized 6.5 and 7.0 mm carburetor reducers
- Ceramic rear bearing
- 21J carburetor
- O.S.SPEED P3 gold plug, great for medium and low speed torque performance, is also included
- (1) AD3 Engine
- (1) Engine to Header Gasket
- (1) P3 Gold plug
- (1) 21J carburetor
- Blue anodized 6.5 and 7.0 mm carburetor reducers