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Large Scale Baja Fun with Massive Flux Power!
The Baja 5B Flux takes the stage as another large-scale release for HPI in 2012! This super-powerful, super-quick buggy can hit speeds up to 60mph with 8S power and a 780Kv motor! Powering this 1/5 Scale electric Baja is a Castle Creations Mamba XL2 ESC and 2028-780Kv electric motor that is 8s LiPo (33.6volts) compatible. With this powerful system and an 8S LiPo battery, there is nearly 10hp available right at your fingertips for immense speed and thrills! The Baja 5B Flux is fully outfitted with the latest options, including the drivetrain parts from the Baja 5SC, adjustable VVC/HD shocks, 2.4GHz radio system and high-torque, large scale metal gear steering servo. Completing the package is a new Baja 5B Flux-specific body with smooth, flowing body lines on both sides of the shell since there is no need for a fuel cap entry slot on the left side of the shell.




To handle the power and speed of the Castle Creations 2028-780KV motor in something the size and weight of the Baja 5B Flux, Castle came up with the Mamba XL2 speed controller - able to handle up to 8S LiPo (29.6 volts) and fitted with a huge fan to keep things on the cool side.
If you want to go fast these days, you need to go brushless. If you want to go CRAZY FAST, you need to fit the Castle Creations 2028 motor! This massive powerplant features 780KV of power - that's many times the torque of the motors used in our Sprint 2 Flux cars! You need a powerful motor to haul nearly 10 kilos of large-scale buggy through mud and sand, and this is precisely the motor for the job! With extra-thick wires, gold-plated connectors and cooling fins, the 2028 is the perfect match for the Baja 5B Flux.
The 5B FLUX features a tool less easy entry large sized battery box capable of holding two hard case 4s LiPo packs or one 8s LiPo pack with an easy to reach opening for connecting the battery(s) and ESC together.
Super Heavy Duty Parts

Because of the ever-increasing power demands of Baja owners around the world, and the constant desire to cram as much power in the Baja chassis as possible, we've added all-new SUPER Heavy Duty drivetrain parts that will make sure the Baja 5B Flux can handle extreme conditions and massive power!
Super Heavy Duty Drive Shafts
Super Heavy Duty Diff Shafts
Super Heavy Duty Drive Axles
All-new extra-thick 9mm dogbones are the starting point of the 5B Flux drivetrain upgrade - these are new, thicker and stronger to outlast the roughest rides and racing action you can find! New wider rubber boots are included to keep the dirt and mud away. Getting the power from the diff gears to the new dogbones is a wider diff shaft that perfectly fits the increased diameter of the dogbones. The Baja 5B Flux is fitted with new Super HD drive axles to get power to the rear wheels, which fit the thicker dogbones.
Unique in the world of large-scale racing, the HPI Viscous Torque Differential gets the power to the rear wheels as smooth as silk. It's easy to tune with optional diff oils and is fully fitted with hardened metal gears and an alloy case.
From the input shaft and idler gear to the alloy-encased differential, every gear inside the sturdy Baja 5SC transmission is made from long-life alloy to keep your truck running all day long with minimal maintenance.
The awesome Baja suspension really comes into its own with long-stroke VVC/HD shock absorbers and high-sidewall truck tyres, letting the tyres do their business whether you're driving over rutted-out whoops or flying over a big tabletop!
VVC/HD shocks deliver improved handling over rough terrain and feature large 6mm diameter shock shafts for increased durability. Threaded shock bodies are used for easy adjustment of ride height.
The high-torque SFL-11MG servo features extra tough all metal gears for durability, an aluminum steering arm and a water resistant case.

All of the latest HPI kits are now fitted with reliable and feature-packed 2.4GHz radio systems for supreme control and confidence! The latest digital 2.4GHz radio technology allows you to confidently drive your HPI kit with other drivers without worrying about things like frequencies or radio conflicts. The radio features a pistol-grip design with steering wheel for ease of use and realistic control, compact size, servo reversing and a light weight due to it requiring only four AA batteries. Set the radio up for your car with custom features like servo reversing, centre trim, dual rate and more. Only 6 AA batteries are required to power the TF-20, so it's light in your hands, and the foam-wrapped steering wheel makes it comfortable to hold. With the adjustable, built-in failsafe feature, you will even be protected just in case the radio ever loses signal.
TF-20 Radio Features Summary
  • Digital 2.4GHz technology
  • Run your HPI kit with other drivers without worrying about frequencies!
  • Adjustable built-in failsafe
  • Servo reversing
  • Steering dual rate
  • Centre trim (steering and throttle)
  • Only 6 AA batteries required
  • Simple switch for legal use in France

HPI makes it as easy as possible to get into RC off-road action. The Baja 5B Flux is completely pre-built and ready to go right out of the box! Everything is assembled and tuned for you by professionals - diffs, shocks, suspension and more are perfect before you even open the package. HPI Ready-To-Run vehicles bring you the same high performance and quality that you'd expect from a high end RC kit but with the added convenience of being factory pre-assembled to the highest standards - giving you a high performance RC vehicle straight from the box!

Just like all HPI cars and trucks, you get a full, in-depth instruction manual with step-by-step instructions that allow you to easily disassemble and reassemble your vehicle for maintenance and easy servicing. The manual also includes a handy parts list and full-scale drawings of the parts and hardware. And the included HPI RC Car DVD is your personal RC car expert in a box!
Features Summary
  • Pre-Assembled 1/5th scale Off-Road Buggy
  • Based on the Baja 5B Buggy
  • Castle Creations Mamba XL2 speed controller
  • Castle Creations 2820-780Kv motor
  • 6S and 8S LiPo compatible
  • New streamlined body design and assets/images
  • TF-20 2.4GHz radio system with failsafe
  • Adjustable motor mount to fit option pinion gears
  • Powerful & waterproof SFl-11MG metal gear steering servo
  • Adjustable VVC/HD shock absorbers
  • Monocoque chassis
  • Long travel suspension
  • Viscous torque oil-filled gear differential
  • All-terrain tyres and beadlock wheels
  • Aluminium rear shock tower
  • Hard plastic skid plates
  • Adjustable rear wing
  • Quick access to all critical maintenance points
  • Dual bellcrank steering
  • Cam type servo saver
  • All socket head hardware
  • Gunmetal anodizing
  • Full set of rubber-sealed ball bearings



#107684 RTR Baja 5B Flux
1/5th SCALE BUGGY with 2.4GHz RADIO
SPECIFICATIONS: Length: 900mm Width: 460mm Wheelbase: 570mm Weight: 9.7kg
WHAT YOU NEED: 2 x 4S or 1 x 8S LiPo battery with Dean's plug Battery charger
6 AA Batteries for transmitter


Specification may be subject to change

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