Traxxas
Available Upgrades
TRX 2.5R Racing Engine

TRX 2.5R Racing Engine
$85.00

Replace your Pro.15 with a 2.5R for intense wheelie-popping power and eyeball-flattening acceleration. Put your Nitro Stampede into orbit! This is the engine that re-wrote the book on nitro engine performance. Before the 2.5R came along, high-performance engines were expensive, short-lived, and difficult to tune. With the TRX 2.5R, Traxxas out-performed expensive "racing" engines while delivering easy tuning, convenient starting, and long-term reliability never achieved before. Traxxas TRX engines set the standard for nitro power.
TRX 3.3 Racing Engine

TRX 3.3 Racing Engine
$110.00

This is it. The big dog. It's probably too much power for most people, but we're not most people. And neither are you. Upgrade to a TRX 3.3 Racing Engine and discover what the saying "no replacement for displacement" means as you uncork the wildest nitro ride short of the NHRA. Wheelies on demand. Scorching straightaway speed. It's all under your trigger finger when you move up to TRX 3.3 power.