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15cc Gasoline Engine,
XL-Size Chassis!

We've taken the ground-breaking GT15C Octane engine, a 2.7hp, 15cc 2-stroke gasoline engine, and strapped it into the award-winning Savage XL long-wheelbase chassis for a one-of-a-kind RC experience! The Savage XL Octane has fistfuls of aggression, a gigantic size, lower fuel costs and extra-long runtimes - what more could you want?

The grunt from the Octane engine lets you throw up dirt roosts and blast through sand, leaves, mud and water with ease! The Savage XL Octane's 3 speed transmission gives you quick acceleration from a standing start with super-efficient shifts for an experience you'll never forget! The 4-shoe Quadra clutch gets the power from the engine to the drivetrain in no time flat, and the all-metal, ball bearing-supported 4WD shaft drivetrain is super-durable to handle whatever you come across. The XtraLarge wide track and XtraLarge wheelbase of the Savage XL chassis work with the XtraLarge Terra Pin tires to make the Savage XL Octane easy to drive and maneuver over and through jumps and obstacles...or whatever is in your way!

The Savage XL Octane is completely pre-built, just like all RTR (Ready To Run) vehicles from HPI Racing. The engine is a pull-start design, and easily starts with a single tug. Rechargeable HPI Plazma battery packs and AA batteries are included to power the hassle-free 2.4GHz radio system and engine control system - all you need to provide is pump gasoline and you are ready to rock!

Download the SavageXL Octane Running Tips PDF

Innovative 2.7hp, 15cc Octane Gas Engine

The GT15C Octane engine is a giant two-stroke gasoline-powered beast that's bigger than any available nitro truck engine! At nearly 3 times bigger than the engine in the Savage XL 5.9, it's LOUD, BRASH and POWERFUL! The Octane engine is fitted with a tough pullstarter system that gets the engine going with a single easy pull, and uses an electronic management system keeps everything ticking over perfectly. For optimum performance, an aluminum tuned pipe and header are fitted so you get as much power as possible out of the Octane. 

The Octane engine is fed by a huge 300cc forward-mounted fuel tank that lets you drive for over 20 minutes per tank. The GT15C is protected by a 2-stage air filter, and a crankshaft-mounted turbo fan and massive aluminum heatsink fins keep it running cool. Finally, the engine is fully enclosed in a resilient roll cage that doubles as a handy carry handle!

Quadra 4-Shoe Clutch

The Savage XL Octane is fitted with an extra-strong four-shoe Quadra Clutch for extra durability and toughness, giving you the confidence to know that the truck can handle anything you want to throw at it. The Quadra Clutch allows you to get powerful starts and acceleration at all RPM ranges, working in concert with the 3-speed transmission for maximum speed and enjoyment! A huge turbo-style fan spins on the crankshaft behind the clutch to effectively cool the engine for steady RPM and consistent tuning. 

3-Speed Transmission

With the Octane's 3 speed transmission, your Savage XL Octane will attack the dirt with a pull of the trigger and the action keeps coming as you move up through the gears! The first gear is perfect for pulling away from standing starts on any surface, and you''ll clearly hear when 2nd and 3rd gear kick in. You can even visibly see the truck accelerate even further at top speed! Make sure you have plenty of open area to play in - this monster truck is not for the faint hearted! 

Get the best from your Savage XL Octane with this helpful series of Getting Started videos! We take you through starting up your Savage XL Octane for the first time, from fueling, breaking in and tuning for extra speed. Each video is between 1 and 5 minutes, so they are quick to watch. Click the individual video links above (videos will play in a larger window) or watch the video series in an online playlist!


VIDEO: This is the HPI Savage XL Octane

The Savage XL Octane is here! Let us introduce you to the Savage XL Octane and the GT15C engine, which continues the fantastic gasoline-powered movement spawned by the Baja 5B buggy! Experience the thrills of the Savage XL Octane's engine, which gives you tremendous power over all types of terrain at a fabulous low cost! With 2-stroke gas power, you'll wonder how you got along without the convenience and low cost of driving the Savage Octane!

VIDEO: Quick Starts, LONG Runtime!

The GT15C engine is the heart of the Savage XL Octane, and with its easy pullstarter and huge fuel tank, you can get started fast and drive for over 20 minutes of fun! Simply fill the tank with 25:1 premix (pump gasoline and 2-stroke oil), switch everything on, prime the carb and give the starter a tug for instant fun! Electronic engine management makes sure everything runs smoothly and there's even an electronic switch for an easy and safe way to stop the engine.


Triple Disc Brake System

The Savage XL Octane is fitted with a triple-disc brake system that brings the Octane to a safe, controlled halt at a touch of your finger. Three vented red fiber discs resist heat build-up to eliminate brake fade at all speeds, with large holes in the discs shedding excess heat effectively for secure stops no matter what speeds you hit. 

Aluminum Performance Pipe

Aggressive and loud, the huge aluminum tuned pipe fitted to the Octane 15cc engine is the perfect accompaniment to the Savage XL Octane! A beautifully turned aluminum manifold and header lead from the engine to the large tuned performance pipe. The pipe is shaped to provide you with the perfect blend of speed, torque and awesome sound for your driving! 

  • Factory assembled, Ready to Run 1/8th scale Octane-powered Savage Monster Truck
  • 2.7hp GT15C 15cc 2-stroke engine with pullstart
  • 300cc fuel tank for over 20 minutes of runtime
  • Savage XL extended chassis with 3mm thick TVP plates
  • 3-speed transmission for aggressive action
  • 4-shoe Quadra clutch system with cooling fan
  • Triple-disc brake system for sure stops
  • XtraLarge Big Bore oil-filled shocks on each corner
  • Low fuel costs using pump gasoline and 2-stroke oil
  • All-metal shaft drivetrain for durability
  • Water-resistant receiver and battery box
  • Waterproof steering and throttle servos
  • Fully equipped with ball bearings for maximum efficiency
  • 2.4GHz radio system for hassle-free performance
  • Proven HPI Savage toughness
  • Extra-wide Terra Pin tires for maximum performance and grip
  • Brand new XL monster truck body
  • All-metal differential gears
  • Steel spur gear
  • Heavy Duty clutchbell
  • Heavy Duty dogbones
  • Heavy Duty outdrives
  • Heavy Duty axles
  • Machined brake hub

#109073 Savage XL Octane
RTR 15cc Gasoline-Powered Monster Truck with 2.4GHz Radio System


Length: 585mm
Height: 265mm
Width: 445mm
Wheelbase: 395mm


  • Pump gasoline
  • Fuel can for mixing
  • Fuel bottle for pouring

Get your Savage XL Octane running right with our Octane Running Tips guide! (PDF, 1.5mb)

Specification may be subject to change.


Specification may be subject to change

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