Traxxas Trx 3.3 engine

Welcome to RCTalk

Come join other RC enthusiasts! You'll be able to discuss, share and private message with other members of our community.

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.


RCTalk Rookie
Reaction score
RC Driving Style
  1. Bashing
  2. Racing
Ok so I got a traxxas nitro sport. And just bought a trx 3.3 racing engine for it. Now the problem is that the throttle for the .15 and the throttle for the trx 3.3 are different and I would need to convert the throttle control over to the spring one. But I don't know the circumference or measurement of the ball at the tip of the new throttle. Can anyone help me whose used or has this same engine.
I found what I needed...I have to get a 2.5r conversion kit to make it work