HPI Mini King Flux Big Kahuna Ford Bronco 4400

The new Mini King is here to dominate and shred the competition!

Powered exclusively by Flux brushless technology, the Mini-King punches far above its size. We’re confident its speed, torque, and control will leave you absolutely blown away.

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 grill bar, this stunning body brings authentic Big Kahuna style and realism to the Mini-King.

18th Scale Madness!

The Mini King is far more than a Venture 18 fitted with a monster truck shell. It has evolved into an entirely new machine created to capture the huge personality of the full-size Big Kahuna Monster Truck in a compact 1:18 scale. Almost every part of the Venture18 platform has been replaced to deliver true mini-monster performance.

Mini King - Big Kahuna Ford Bronco 4400

The Mini has Evolved

A tough TVP composite chassis, twin oil-filled shocks at all four corners, and massive new axle housings with three-gear differentials transform this truck into a compact powerhouse. A single-speed transmission drives counter-rotating CVD steel  center shafts for smooth power delivery, while heavy-duty lower links and the officially licensed Big Kahuna body complete the transformation.

Big Stance, Big Traction with Precision Wheels and Adjustable Track Width

Scale-accurate 1.2-inch MT-1 deep dish wheels give the Mini-King its unmistakable monster truck stance, and each wheel is wrapped in Tredz TRZ 72×50 monster truck tires with foam inserts for reliable grip on dirt, carpet, and loose surfaces. These tires are designed to deliver confident traction while maintaining the round profile and sidewall flex you’d expect from full-size monster truck rubber.

To fine-tune the width of the truck, the Mini-King includes two removable 7 mm hex adaptors. Drivers can choose the standard stance for precise handling or install the wider +5.5mm offset for increased stability during high-speed runs and aggressive cornering. The wheels are supported by aluminum 7mm drive hexes, ensuring a secure connection to the axle and improved durability under heavy loads.

Fully Licensed Bodyshell & Authentic Graphics

The Big Kahuna name has serious pedigree — and your new HPI Racing Mini King Big Kahuna model brings that legacy straight into your hands. Driven and owned by Shane England out of Powderly, Texas, Big Kahuna made its debut in 2013 and has become a fan-favourite for its daring stunts, bold graphics and surf-culture flair. 

We’ve captured that spirit in a meticulously licensed bodyshell: the Ford Bronco 4400–inspired design that Big Kahuna unveiled for its modern era. Every curve, graphic and detail reflects the real truck’s aesthetic, from the surf-board silhouette to the rugged roll-cage and standout “BIG KAHUNA” brand.

Crafted from high-strength polycarbonate, the bodyshell is screenprinted and hand-finished with cutout windows sitting atop a hard-plastic internal roll cage for scale authenticity and durability.

Precise On-Axle Steering Control

The Mini-King’s steering system has been engineered for strength, precision, and direct response. Instead of mounting the servo on the chassis, the Mini-King uses an on-axle steering servo layout, placing the SD-02MGWR metal-geared micro servo directly on the axle housing. This design minimizes link flex, shortens the steering path, and delivers immediate, consistent steering feel across rough terrain.

By keeping the servo firmly anchored to the axle, steering inputs remain precise even under heavy suspension movement or during hard cornering. The result is improved control at both low speeds and high-speed monster truck runs. Combined with the Mini-King’s robust front U/J driveshafts and heavy-duty axle housings, the on-axle steering setup provides reliable, confident handling wherever you choose to drive.

 Dual Oil-Filled Shocks on Every Corner

 Each wheel of the Mini-King is supported by a pair of oil-filled shocks, giving the truck the damping performance required for authentic monster truck action. This twin-shock setup increases overall suspension control by spreading the load across two dampers, allowing the Mini-King to absorb big hits, land jumps smoothly, and maintain traction on uneven terrain.

The added oil volume and increased damping surface help keep the chassis stable and improving responsiveness over ruts, rocks, and loose dirt. The result is a compact truck that feels planted, controlled, and ready for aggressive driving in any environment.

Robust Lower 4-Link Suspension

The Mini-King features a robust lower 4-link suspension setup at both the front and rear, engineered to handle the demands of true monster truck performance. These heavy-duty links provide a strong, stable connection between the chassis and the axles, keeping the truck planted through jumps, rough terrain, and high-speed cornering.

By controlling axle articulation and minimizing unwanted flex, the 4-link system ensures that power is efficiently transferred to the wheels while maintaining consistent ride height and traction. Combined with dual oil-filled shocks and torsion bars, the lower 4-link setup allows the Mini-King to deliver smooth, controlled handling while absorbing the impacts and stresses of aggressive bashing.

The truck comes with working grille LEDs already installed, and the roof-mounted light bar location is designed to be LED-ready for easy upgrades. Owners can simply install the optional Light Bar Set (#160869) with no modifications required. For even more lighting features—including advanced modes and control options—the RL-700 Light Control Unit (#160861) can be added to expand functionality.

Whether you’re running at dusk, carving through indoor courses, or lighting up nighttime bash sessions, the Mini-King is prepared to shine just like the real Big Kahuna.

Metal-Geared SD-02MGWR Steering Servo

The water-resistant HPI SD-02MGWR steering servo is the ideal companion for the Mini-King FLUX electronics package. This is a high torque servo with up to 1.5kg-cm holding power at 6V, plus it's water-resistant so it can easily handle splashes and water drops when driving through puddles, snow and mud. Mounted directly to the axle, it provides extra weight over the front axle for precise steering control. 

• Operating Voltage: 4.8-6V
• 6V: Speed: 0.15 sec/60 degrees, Torque: 1.5kg-cm
• Servo Spline: 40T

Durable Center Drive with Machined Gears

The Mini-King features a precision-engineered single-speed center transmission that efficiently transfers power from the brushless motor to the front and rear axles. Equipped with a 0.5M machined gear set, this gearbox delivers smooth, reliable torque distribution while keeping drivetrain losses to a minimum.

Its compact design works seamlessly with the counter-rotating CVD steel dogbone driveshafts, helping to reduce torque twist and maintain stability under acceleration. Built for durability, the center transmission ensures consistent power delivery even under aggressive bashing and high-speed runs, making the Mini-King feel responsive, controlled, and ready to handle any terrain

Heavy-Duty Axles with Three-Gear Differentials

The Mini-King’s front and rear axles are more than just visually impressive, they’re engineered for serious performance. Each axle houses a robust three-gear differential, designed to provide smooth power distribution while handling the high torque of the brushless motor. These super beefy axle casings protect the internal gears from shocks, landings, and aggressive driving, ensuring long-lasting durability and consistent performance.

By evenly distributing power between the wheels, the three-gear diffs improve traction through tight turns, rough terrain, and off-camber surfaces. Whether blasting across dirt, pavement, or carpet, the Mini-King maintains stability and control, letting you push it harder without worrying about drivetrain stress.

Waterproof Flux ESC for Full Control

The Mini-King is equipped with the FLX16-3S30-WP Flux electronic speed controller, designed to handle the full power of the 4500KV brushless motor with precision and reliability. Fully waterproof, the ESC allows you to drive through wet or muddy conditions without worry, keeping electronics protected and performance consistent.

The Flux ESC provides smooth throttle response, efficient braking, and adjustable settings for fine-tuning the truck’s behavior to match your driving style. With an XT-30 connector included, battery installation is simple, secure, and ready for high-current performance. Paired with the Mini-King’s brushless motor, this ESC ensures controlled, powerful acceleration whether you’re climbing, bashing, or launching jumps.

Flux Brushless Muscle

At the heart of the Mini-King is the FLX16-2435 4500KV brushless motor, delivering the kind of instant throttle response and strong top-end you’d expect from a full-sized monster truck, scaled down for 1:18 action. This compact yet powerful motor provides smooth, efficient power across the entire RPM range, giving the Mini-King the punch it needs for rapid acceleration, confident wheelies, and high-speed passes.

The 4500KV rating strikes an ideal balance between torque and speed, making the truck equally capable on indoor courses, outdoor dirt tracks, or backyard jumps. Paired with the waterproof FLX16-3S30-WP Flux ESC, the system runs cool, consistent, and ready for all-weather driving. Whether you’re cruising with precise throttle control or unleashing full power, the Flux system ensures the Mini-King feels lively and responsive every time you pull the trigger.

HPI MINI KING Features

• Fully RTR with TF-706 Radio Set and 7.4v 800mAh 35C LiPo pack and USB Charger.
• 1:18th Scale Fully Licensed Replica – Big Kahuna Polycarbonate body with internal roll cage and hard body interior.
• TVP composite Chassis Design with Tube details.
• 1.2” MT-1 45mm wide Deep Dish Wheels with two removable 7mm Hex Adaptor Offsets included. (STD and +5.5mm).
• Tredz TRZ 72x50/1.2” Tires with Foam Inserts.
• Grill LED’s included, Roof bar LED ready (Not Included).
• FLX16-3S30-WP Flux ESC with XT-30 FLX16-2435-4500KV Brushless Motor.
• SD-02MGWR Micro Servo (6.0V/1.5kg/Metal Geared).
• New MT HD axle housings.
• 3-Gear front and rear differentials.
• Front U/J driveshafts.
• HD 4-way lower link set.
• Dual oil-filled shocks on each arm.
• Counter-Rotating CVD steel centre driveshafts.
• Single-speed centre gearbox – with 0.5M machined gear set.
• Front and Rear anti-roll bars.
• Fully ball-raced.
• Aluminum 7mm drive hex.
• Aluminum chassis braces.
• Rear wheelie bar

Specifications

• Length: 275mm
• Width: 215mm
• Height: 125mm
• Wheelbase: 178mm
• Drivetrain: 4WD

WHAT YOU NEED:

• 2A USB power supply
• 4 x AA batteries for the transmitter
• Recommended LiPo Charge Case for charging LiPo packs #160013 Plazma Pouch

• Brand: HPI
• Part No: HPI-160807
• Barcode: 5050864040136
• Scale: 1:18
• Build Level: Assembled (RTR)
• Power Source: Electric - Brushless
• Vehicle Type: Monster Truck
• Surface Type: Off Road