IPS Shaft, Standard Plug, Slide Carb Engine, Pull Start engine from Traxxas. The Power of TRX 2.5 - Elevating Ready-To-Run to Ready-To-Race®! The TRX 2.5 Racing Engine is loaded with advanced engine ...

are intended to return the carburetor throttle to a closed position when the throttle servo is in its neutral setting. This can help give a more consistent idle by keeping the carburetor ...