CROSSRC EMO XL Big Bison 1/8 6WD 6x6 RC Rock Crawler Off-Road Electric Truck RTR

CROSSRC EMO XL Big Bison: 1/8-Scale 6x6 RC Crawler Truck

The CROSSRC EMO XL Big Bison is an assembled, painted six-wheel-drive crawler for trail driving, controlled climbing and scale utility builds. Three driven portal axles, selectable differential locks and a two-speed metal gearbox give it a different layout from a conventional 4x4 trail truck.

Choose the 775 Brushed Version or HobbyWing Brushless Version, then select Blue, Red, Yellow or Gray. Battery and charger inclusion is a separate choice. The removable rear platform provides space for scale accessories without changing the truck’s core drivetrain.

What Makes the Big Bison Different?

Six driven wheels with selectable locks

The front differential lock operates separately from the rear lock function. The two rear axles lock together, not independently. Use the controls according to the supplied setup instructions.

Low gear for obstacles, high gear for trail sections

The two-speed gearbox uses metal gears, combining machined and MIM components. Its CNC aluminum motor mount helps transfer heat away from the motor.

A chassis built around the third axle

An aluminum and fiber-composite third-axle mount, reinforced frame rails and rear balance linkage support the longer 6x6 layout. The suspension uses 7 mm stainless steel links and 21 mm CNC shocks with 350 CST oil.

Scale features you can operate

Remote lighting modes include grille warning lights. The controllable sound system provides horn, alarm and music effects, while the detachable rear platform supports a utility-truck style build.

Specifications

775 Brushed vs HobbyWing Brushless: Which Version?

Both choices use the Big Bison 6x6 platform. A power-system voltage rating is not a blanket rating for every accessory: check the installed electronics, pack fit and instructions before changing battery voltage.

Battery and Charger Selection

The current Battery+Chargers options are YES and NO. YES includes one XT60 11.1 V 50C 3S 5200 mAh LiPo battery and one SKYRC MAX B6AC 80 W balance charger. NO excludes both. Select this independently of body color and motor version.

Package Contents

• Selected assembled and painted EMO XL Big Bison 6x6 truck
• Motor and ESC matching the selected power-system version
• Servo equipment, two-speed transmission and lighting system
• Transmitter and receiver
• Battery and charger only when YES is selected

Body and Chassis Details

The six-wheel-drive layout uses a portal-axle drivetrain, two-speed metal-geared transmission and a separately controlled front differential-lock function. The two rear axles share their lock control.

Three-axle drivetrain

The over-axle driveshaft and reverse-transmission portal layout distribute power through the 6x6 chassis.

Third-axle mounting

The third-axle suspension mount combines aluminum and fiber components.

Gearbox and motor mount

A CNC aluminum motor base supports the metal-geared gearbox, which combines machined and MIM-process gears.

Bearings

ABEC3 bearings are listed throughout the vehicle. Inspect and service the drivetrain after trail use.

Suspension links

The 7 mm 304 stainless steel links use enlarged reinforced ball ends.

Hydraulic shocks

The 21 mm CNC shocks use vacuum-plated rods and are listed as factory-filled with 350 CST oil.

Reinforced frame

The chassis uses reinforced frame rails for the longer six-wheel-drive platform.

Portal axle housings

The axle housings use weather-resistant nylon. Material claims do not remove the need to inspect the truck after impacts or cold-weather use.

Rear balance linkage

The second-generation rear balance-link system works with the suspension to manage body movement.

Trail tires

VELOCIRAPTOR AT tires provide the listed tire setup. Grip varies with terrain and vehicle preparation.

Remote lighting

The supplied lighting includes a central grille warning light and selectable remote-controlled modes.

Version-specific electronics

The 775 brushed setup uses a customized Hobbywing 4S 880 ESC. The alternative HobbyWing 1/8 FOC brushless system uses an 1800KV motor with a listed 2–4S system range. Choose the power system in the product options; the platform specification also lists a 7.4 V circuit.

Controllable audio

The description lists a dual-audio speaker with replaceable horn, alarm or music audio.

Removable rear platform

The detachable rear attachment offers a maximum listed platform area of 423 × 246 mm for scale utility builds.

CROSSRC EMO XL Big Bison FAQ

What is the CROSSRC EMO XL Big Bison best suited to?

The EMO XL Big Bison is a 1/8-scale 6x6 crawler for off-road trails, controlled climbing and scale utility builds. Its three-axle layout and removable rear platform suit buyers looking for a six-wheel trail truck.

What is the difference between the brushed and brushless versions?

The 775 Brushed Version pairs a 775 motor with a customized Hobbywing 4S 880 ESC. The HobbyWing Brushless Version uses a 1/8 FOC system with an 1800KV motor and a listed 2–4S system range.

Can I lock all three axles separately?

No. The front lock and rear lock function are separately controlled, but both rear axles lock together.

Does it have low and high gears?

Yes. The metal-geared two-speed transmission provides a lower ratio for crawling and a higher ratio for trail driving.

Are the battery and charger included?

Only with YES selected under Battery+Chargers. The bundle contains an XT60 11.1 V 50C 3S 5200 mAh LiPo and SKYRC MAX B6AC 80 W balance charger. NO excludes both.

What size battery will fit?

The battery compartment allows up to 14 × 5 × 4 cm. Check the pack dimensions, connector, cable clearance and selected electronics before fitting an alternative battery.

Does the Big Bison include lights and sound?

Yes. Its specified equipment includes remote-controlled lighting modes with grille warning lights and controllable horn, alarm and music sound effects.

How large is the truck?

Vehicle dimensions are 77.5 × 30.2 × 28.8 cm, with axle spacing of 37.5 + 15 cm. Package dimensions are 76.5 × 32.5 × 33 cm and package weight is 7.8 kg; package measurements are not running weight or vehicle dimensions.