HPI Racing - RTR Nitro RS4 3

The HPI RTR Nitro RS4 was one of the most popular "ready-to-run" kits ever, and here is its successor, the RTR Nitro RS4 3!

The new car is loaded with features that are designed to make it even better for parking lot drivers. Our number one request from customers was to eliminate the problem of rocks getting stuck in the drive belts, so we eliminated belts completely and added a tough shaft drive system similar to what has proven successful on our popular Nitro RS4 MT and Super Nitro Rally.

"More speed!" was the next request, so we've revised our 15FE engine and added a new aluminum heat sink head, a one-piece manifold & composite dual chamber tuned pipe to deliver improved acceleration and top speed.

Of course, we kept the best features . . . our reliable TX-2 radio, a huge variety of realistic 200mm bodies, excellent customer service support, and we made the RTR 3 compatible with many of our existing hop-ups. If you're into the nitro street racing scene, give the new RTR Nitro RS4 3 a try!

Here are the major features of the RTR Nitro RS4 3:

A new shaft drivetrain prevents damage from pebbles and stones
Full-time 4WD provides great handling on any paved surface
Our improved 15FE features a purple heatsink head
A limited-slip front diff makes driving easy and predictable
The removable radio tray makes cleanup simple and quick
2.5mm countersunk chassis for a solid platform
Dual chamber tuned pipe and one-piece cast manifold
A complete set of ball bearings keeps everything rolling smooth
The proven Airtronics radio system keeps things under control
Pre-cut foam bumper keeps everything protected
D-Compound X-Pattern tires grip just about everywhere
Adjustable body posts let you fit a variety of HPI bodies

The RTR Nitro RS4 3 kit is a terrific way to get introduced to Nitro R/C! Because it is 90% assembled, getting started is just a matter of about an hour's worth of work, and you're off and running!

Cleanup couldn't be easier, either - with a covered receiver case, fully enclosed battery compartment and removable radio tray, it's just a matter of spraying off the chassis with our #9062 Nitro Car Cleaner to get rid of road dirt.

Easy to Upgrade!
In addition to any of our 200mm touring car bodies, the RTR Nitro RS4 3 kit can also accept any of our touring car wheels, treaded or slick tires, shocks, springs... it's all available and waiting to fit your car! In the HPI tradition of parts compatibility, many of the drivetrain hop-up parts from our popular Nitro RS4 MT will bolt right on. Of course, there will be several hop-ups available just for the RTR 3, including a new 2 speed with threaded removable clutchbell gears, an optional thicker chassis, a new header, and many more to come. We even have HPI brand Power Fuel, Nitro Start-Up sets, fuel bottles, and Nitro Car Cleaner available so you can get rolling as quickly and easily as possible. See our Nitro Option Parts page for all the items you will need!

Improvements over the original RTR Nitro RS4:

Shaft drive eliminates damage from rocks and debris
Faster acceleration and top speed
Anodized aluminum heatsink head (a $40 value!)
Improved tires with one-piece foam donut
Receiver cover to protect from fuel spills
Fully enclosed receiver battery case
Limited slip front differential
Thicker 2.5mm chassis (original RTR Nitro RS4 chassis was 2mm)
Dual chamber composite tuned pipe
Adjustable body mounts
High ground clearance foam bumper
One-piece cast manifold (eliminates vibration and heat problems compared to old 2-piece design)
All at a lower price!

Terrific value!
Our new RTR Nitro RS4 3 kit is the successor to the hugely popular RTR Nitro RS4, and now available from your favorite retailer. And the best news... the RTR 3 is less expensive than the old RTR!

Great radio!
The HPI TX-2 radio system included with HPI RTR kits is packed with features! The super narrowband AM transmitter and receiver work together to let you precisely control your car. Six different crystal choices let you race with your friends!

The radio transmitter is comfortable to hold and features a battery strength indicater, letting you know when the batteries need to be replaced or charged. The transmitter also features a retractable antenna, steering and throttle trim dials (for fine adjustments to center the servos), plus a dual rate adjustment for the steering! Dual rate is very important because it lets you adjust how far the steering servo turns the front wheels left and right.

Two strong servos are also installed in each HPI RTR Nitro kit, already plugged into the standard size super narrowband AM receiver. A convenient on/off switch is also included!

If a warranty issue is ever encountered, Airtronics handles all USA returns and repairs. Upgrades are also available from your local hobby shop!

Four AA batteries are needed to fit in the car battery holder, with 8 AA batteries needed for the transmitter.

See our kit video! | Nitro RS4 RTR 3 Catalog Page | See our Customer's Nitro touring cars

Available Kits

#584 Lamborghini Murcielago

#579 Chevrolet Camaro SS

#580 Ford F-150 Flareside

#581 Dodge Viper GTS-R

#582 Dodge Stratus

Kit Features

complete rolling chassis

15FE engine with new heatsink head

D-Compound X-Pattern tires

tough shaft drive

full-time 4WD

limited slip front differential

removable radio tray

18 rubber-sealed ball bearings

Airtronics radio system installed

tough polycarbonate body included

countersunk aluminum chassis

large front bumper

sealed metal gear diffs

You will need

12 AA batteries

Nitro car fuel

Fuel bottle

Glow plug igniter

Instant glue (CA)

Paint for body

Tools Needed for maintenance

#1 (small) screwdriver

#2 (large) screwdriver

instant glue (CA)

hobby knife

needlenose pliers

side cutters

curved scissors

thread lock

glow plug wrench

reamer or drill

shock oil