O.S. MAX-21TM Revo .21 Nitro Engine with 11K-R Carburetor

The O.S. Max-21TM (Revo) Off-Road Engine W/11K-R Carb adds more power and displacement than the 18TM – and without modification!.
Retrofits into the same mounting pattern, and the Traxxas clutch assembly bolts right on.
The special manifolds adapt perfectly to existing pull-start or EZ-Start™ systems.
Reliable, lightweight and easy to operate – and both include a 3-needle carb for more precise tuning and an LC3 glow plug.

Includes the 11K carb that most 21TM owners end up upgrading to anyway- no need to spend the additional ~$100 later.

Specs

Displacement: 3.41 cc
Bore: 17.0 mm
Stroke: 15.0 mm
Practical rpm: 3000-35,000
Output: 1.77 hp/29,000 rpm
Weight: 243g

Includes:

11K-R Carburetor
LC3 Glow plug

Free ground shipping.