THS Racing optional Tuned Pipe Set works with the .25 1/8 scale HPI Savage, with a .25 or .28 size engine.
THS Racing optional 1/10 Tuned Pipe and Manifold Set designed and tuned for the Traxxas Revo 3.3 RTR.
THS Racing Tuned Exhaust for 1/8 Scale Truggy/Buggy.