Ofna engine is constructed of ABC (Aluminum piston with a Chromed Brass cylinder) with red anodized aluminum head. Engine delivers excellent bottom end power with great top end run out. This product includes Turbo plug type head, turbo glow plug, one Jammin .28JPX Engine, one silicone rubber insert for Force and Novarossi type manifolds, one running and parts information sheets, and one Jammin products sticker.

Ofna recommends using 20% O'Donnell fuel
Muffler or tuned pipe depending on application
Some notes on Slide Valve and Rotary Carburetors:
Rotary Carbs offer a larger response in the middle of the power band. This works well for off-road applications when throttle response must be varied. Slide Valve Carbs provide greater response at the beginning and end of the power band. This works well for on-road and racing applications for fast take-offs and high speed.