Key Specs
About this product
MEET THE MONSTER KING!
The legend has evolved, and it’s bigger, tougher, and meaner than ever! The HPI Racing Monster King is here to take the crown, born from the DNA of two fan-favorite platforms: the Wheely King and the Crawler King. By combining the best of the Wheely-King and Crawler King into a single monster truck platform, we’ve created something special for Wheely-King fans!
Built around a refined version of the original Wheely King chassis, the Monster King boasts a new center gearbox with an external slipper clutch, enhanced steering geometry, and new hex hardware for easier maintenance. Every change made with the performance, and fun in mind — from the Lock-Nut suspension mounts that banish E-clips forever, to the rugged new Tredz tires wrapped around wide 2.2” MT wheels.
Topping it all off is the fully licensed Ford Bronco 4400 bodyshell, an RC replica inspired by the real-life Big Kahuna truck, run by Shane England, with the help of RTR Vehicles and Vaughn Gittin Jr. Motorsports. Featuring a detailed interior, internal roll cage, and working LED light bars, this stunning body brings authentic Big Kahuna style and realism to the Monster King.
The Monster King Big Kahuna brings the spirit of the original Wheely King into a new era. Stronger, smoother, and packed with upgrades that fans will appreciate. With its tough solid-axle design, authentic details, and that unmistakable HPI fun factor, it’s ready to tear up any terrain in true monster truck style.
Features
• 1/10th Scale Monster Truck
• Fully licenced RTR-Vehicles Ford Bronco 4400 Polycarbonate bodyshell with hard plastic cage and driver.
• Updates to the Wheely King/Crawler King chassis
• New centre gearbox configuration
• New external adjustable slipper clutch
• New spur gear cover
• New motor mount plate
• Motor mounting positioning Inserts
• New rear body mount bracing
• New radio box
• New “E-Clip” eliminating lower shock and linkage mounts
• New steering linkage
• New Hex hardware
• New 2.2” 56mm wide MT wheels and Tredz 135x86mm “TRZ” tires.
• Oil-Filled shocks
• Front and rear differentials
• Aluminum blue-anodized lower links
• Higher Carbon content, less flexible upper links
• TF-51 Transmitter and RF-51 Receiver
• SC-3SWP2 Brushed ESC (2S Max recommended for Brushed Motor)
• Brushed 550 12T motor
• LED headlights and roof bar lights included (TX controlled)
• 2000mAh Ni-MH pack and USB Charger included
• Metal Geared Steering Servo (6.0V/16kg/MG)
Frequently Asked Questions
Yes, it's a Ready to Run (RTR) model that comes fully assembled and ready to drive out of the box, making it accessible for newcomers to RC trucks. However, as a 1/10th scale monster truck, it's a substantial vehicle best suited to drivers with some basic RC experience rather than absolute beginners.
The product description doesn't specify the battery type, capacity, or charger included. You'll need to check the full manual or product packaging for exact battery specifications and recommended charge times before purchase.
As an RTR model, it arrives fully assembled and ready to run. The package includes the Monster King chassis with the licensed Ford Bronco 4400 bodyshell, wheels and tyres, electronics, and all necessary components. Check the manual for a complete list of included accessories.
It's a 1/10th scale model, which typically measures around 45–55 cm in length depending on final specifications. This makes it a substantial desktop or backyard truck, so ensure you have adequate indoor or outdoor space for driving.
The Monster King combines the best features of HPI's Wheely King and Crawler King platforms with upgrades including a new centre gearbox, external adjustable slipper clutch, enhanced steering geometry, and durable solid-axle design. It also features tough 2.2" MT wheels and Tredz tyres built for off-road performance.

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