Traxxas 4902, Owner'S Manual

Thank you for purchasing a Traxxas T-Maxx 2.5R Nitro Monster Truck. 
T-Maxx is legendary for providing the perfect balance of size, speed,
power and agility. With the new T-Maxx 2.5R, we’ve added the
extremely powerful, efficient, lightweight, TRX 2.5R Racing Engine. 
T-Maxx 2.5R has been carefully engineered to keep its weight low
and maintain an incredible power-to-weight ratio and seemingly
perfect performance balance. 

Your T-Maxx 2.5R combines automatic, two-speed shifting in forward 
and reverse, with powerful four-wheel disc braking. The patent pending
transmission design and three-channel TQ-3 radio system put these
functions right at your fingertips.

T-Maxx 2.5R is equipped with the patent pending Optidrive

™

electronic

transmission control. Advanced electronic reduce the number of moving
parts inside the transmission for less weight, smooth engagement and
efficient performance.

The power and reliability of the TRX 2.5R Racing Engine has been
proven in thousands of Traxxas models. The rear exhaust design,
trick porting, and sophisticated carburetor all come together for
dramatic, high-revving power output. Add to that the smooth
convenience of the on-board EZ-Start electric starting system and
the TRX 2.5R Racing Engine remains in a class all by itself. 

Traxxas was the first with standard on-board electric starting. The 
EZ-Start has evolved into an incredibly advanced and reliable starting
solution, featuring thermal protection for the motor and built-in
diagnostics to monitor the condition of the glow plug.

We know you’re excited about getting your new T-Maxx 2.5R on the
road, but it’s very important that you take some time to read
through the Owners Manual. This manual contains all the necessary
set-up, break-in, tuning, and operating procedures that allow you to
unlock the incredible performance and adjustment potential that
Traxxas engineers designed into T-Maxx 2.5R. 

Even if you are an

experienced R/C enthusiast, it’s important to read and follow the
procedures in this manual. T-Maxx 2.5R contains new technologies
in the engine, suspension, and transmission operation that you

may not be familiar with. Pay particular attention to the fuel and
break-in requirements for the engine. 

The advanced design of the

TRX 2.5R Racing Engine has a special break-in procedure that has
been developed and proven to produce the best-performing
engine possible. Using traditional or old-fashioned procedures
could reduce engine performance and longevity.

T-Maxx 2.5R is made to be a complete package that starts with the
highest level of engineering; a professionally produced DVD to
acquaint you with the starting, racing, and maintenance procedures;
and is equipped stock with the most powerful Ready-To-Race®
engine available. We want you to feel confident that you own the
best-performing truck in the market and that it is backed by a team
of professionals who aim to provide the highest level of factory
support possible. T-Maxx 2.5R is about experiencing total
performance and satisfaction, not just with your truck, but also with
the company that stands behind it. 

Thank you again for going with Traxxas. We work hard every day to
assure you the highest level of customer satisfaction possible. We
truly want you to enjoy your new T-Maxx 2.5R!

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Before You Proceed

Safety Precautions

Tools, Supplies and

Required Equipment

Anatomy of Your 

T-Maxx 2.5R

Quick Start: 

Getting Up to Speed

Gluing the Tires 

and Decorating 

Your T-Maxx 2.5R

The Traxxas 

TQ-3 Radio System

The TRX 2.5R 

Racing Engine

Driving Your 

T-Maxx 2.5R

Tuning Adjustments

Maintaining and

Storing Your 

T-Maxx 2.5R

Troubleshooting

Index

Introduction

Traxxas Support

Traxxas support is with you every step of the way.
Refer to the next page to find out how to contact 
us and what your support options are.

Quick Start

This manual is designed with a Quick Start path
that covers only the necessary procedures to get your model
up and running in the shortest time possible. If you are
experienced with Traxxas products you will find it helpful and
fast. Be sure and read through the rest of the manual to learn
about important safety, maintenance, and adjustment
procedures. Turn to page 7 to begin the Quick Start path.