MODEL 5407: TRX 3.3, IPS Shaft with recoil pull starter

The powerful TRX3.3 racing engine delivers unbeatable performance on or off the track. The engine features a precision composite slide carburetor, PowerTune cooling head, dyno-proven IPS crankshaft, and multi-port rear exhaust. Years of testing and proven performance deliver the easiest-to-tune, most dependable, most powerful Ready-To-Race engine available. It's competition-proven power with convenience and reliability for all-day driving fun.

The TRX 3.3 produces an extreme 60% more peak horsepower compared to the TRX 2.5! The overall power under the curve is nearly 50% greater to deliver the smooth, linear power output TRX engines are famous for. The TRX 3.3 Racing Engine offers thoroughbred race engine performance that's absolutely second to none. There's no penalty to pay for having more power either. The TRX 3.3 Racing Engine is equipped with EZ-Start push-button electric starting and simple, reliable tuning from the two-needle composite slide carburetor. Plus it's backed by the support and reliability you expect from Traxxas including the Exclusive Lifetime Engine Replacement Plan.

IPS Crankshaft
The innovative crankshaft design has dyno-proven timing and port flow to optimize fuel delivery into the engine. The crank is surface hardened, precision ground and micro-polished for superior life and durability. Traxxas IPS crankshaft design makes the TRX 3.3 compatible with any model equipped with a TRX 2.5 or TRX 2.5R Racing Engine.

TRX Composite Slide Carburetor
The TRX 3.3 is equipped with same high-performance slide carburetor that has reliably powered a generation of TRX Racing Engines. The slide type carburetor provides less restrictive, straight through airflow for more power and improved throttle response. Because it is molded, Traxxas engineers incorporated superior internal design enhancements and precision not possible with traditional machined carburetor. The composite material does not transfer heat like aluminum for more consistent tuning.

PowerTune Head
The giant Powertune machined aluminum cooling head promotes even heat distribution for stable engine temps and rock-solid tuning consistency. The uniquely designed molded head protector is securely fastened to the top of the head with precision hex screws.