21TM ABC .21 Engine with Manifold: 2.5 and 3.3 Revo

Boost the 4WD performance power in your Traxxas® Revo® with the 21TM engine from O.S.! It's the perfect upgrade for your monster masher — because it's a direct fit for Traxxas EZ-Start® or pull-start systems, as is the manifold and clutch assembly! O.S. Two Year Limited Warranty The 21TM 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.