This page is dedicated to one of my favorite radio controlled cars...My Traxxas Nitro 4-Tec Pro 4WD with a 2.5HP OFNA Hyper .21 big block engine.  I try to use this car whenever possible and usually keep it nice and clean.  This 1/10th scale car is designed for a small block engine (.12 CI - .15 CI) but I just needed more power and added the most efficient .21 CI engine for the ultimate in wheel shredding action.  Some of these photos show the car in 2wd in order to keep the engine from overheating.

Testing and Tuning: