CROSSRC EMO XX Ultra Sword Dragon and EMO XXL Thunder Dragon Ultra 1/6 RC Crawlers
From “Strong” to “Stronger”
The beast, now just over a year old, evolves once again today.
Remember the thunderous debut of the Thunder Dragon and the Stegosaurus? Their massive 1/6-scale frames sent RC enthusiasts into a frenzy right from the start.
After more than a year of real-world testing and listening closely to player feedback, CROSSRC is proud to officially launch the Thunder Dragon & Stegosaurus Special Editions.
This time, it’s not just a full internal upgrade -the exterior has also been given a stunning, game-changing facelift!
The beast, now just over a year old, evolves once again today.
Remember the thunderous debut of the Thunder Dragon and the Stegosaurus? Their massive 1/6-scale frames sent RC enthusiasts into a frenzy right from the start.
After more than a year of real-world testing and listening closely to player feedback, CROSSRC is proud to officially launch the Thunder Dragon & Stegosaurus Special Editions.
This time, it’s not just a full internal upgrade -the exterior has also been given a stunning, game-changing facelift!
The CROSSRC EMO XX Ultra Sword Dragon and EMO XXL Ultra Thunder Dragon are large-scale 1/6 RC crawlers built around the same upgraded platform, with the EMO XX Ultra using a 4x4 drivetrain and the EMO XXL Ultra using a 6x6 drivetrain.
Both models feature a high-quality pre-assembled PC body, 2 mm stamped steel simulation frame, CNC hydraulic shocks, 10 mm aluminum suspension links, steel drivetrain components and a range of Ultra-series upgrades designed for demanding off-road and crawling use.
Four configurations are available: EMO XX Ultra Sword Dragon 4x4 ARTR, EMO XX Ultra Sword Dragon 4x4 RTR Brushless, EMO XXL Ultra Thunder Dragon 6x6 ARTR and EMO XXL Ultra Thunder Dragon 6x6 RTR Brushless.
** Choose the configuration that best matches your build requirements.
RTR BRUSHLESS VERSIONS ARE EQUIPPED WITH:
Motor: Hobbywing 4985 1650KV Brushless Motor
ESC: Hobbywing 150A
ESC Voltage Range: 3S–6S LiPo
Steering Servo: 70KG 7.4V High-Voltage High-Torque Servo
Transmission & Differential Servos: 3 × 25KG 7.4V High-Voltage Servos
Radio System: DumboRC X6 6-Channel 2.4GHz
Lighting: Synchronized High-Power LED System with Strobe Mode
The battery compartment measures 160 × 80 × 55 mm.
*Compatible battery configurations for the Brushless RTR version include 3S, 4S, 5S and 6S LiPo batteries, as well as supported multi-battery series combinations.
ARTR KIT CONFIGURATION:
The ARTR versions are supplied as pre-assembled vehicles without the power system, radio equipment and steering servo.
Additional components required to complete the ARTR build include:
Motor
ESC
Steering Servo
Transmitter
Receiver
Battery
Charger
*The ARTR configuration is intended for experienced RC hobbyists who want to select their own electronics and customize the power system according to their preferred setup.
CROSSRC EMO XX ULTRA SWORD DRAGON 4X4:
Scale: 1/6
Drivetrain: 4x4
Body: Pre-assembled PC body shell
Frame: 2 mm stamped steel simulation frame
Rear Cargo Box: ABS rally-style rear box
Suspension Links: 10 mm aluminum
Shock Absorbers: 26 mm CNC hydraulic
Front Axle: Steel CVD universal axle
Rear Axle: Steel straight axle
Wheel Hubs: Nylon clamping type
Battery Compartment: 160 × 80 × 55 mm
CROSSRC EMO XXL ULTRA THUNDER DRAGON 6X6:
Scale: 1/6
Drivetrain: 6x6
Body: Pre-assembled PC body shell
Frame: 2 mm stamped steel simulation frame
Suspension Links: 10 mm aluminum
Shock Absorbers: 26 mm CNC hydraulic
Front Axle: Steel CVD universal axle
Rear Axle: Steel straight axle
Wheel Hubs: Nylon clamping type
Battery Compartment: 160 × 80 × 55 mm
WHAT'S INCLUDED：
ARTR Kit:
Pre-assembled vehicle
Transmission and differential servos
Model-specific tools
RTR BRUSHLESS:
Assembled vehicle
Hobbywing 4985 1650KV brushless motor
Hobbywing 150A ESC
70KG steering servo
3 × 25KG transmission and differential servos
DumboRC X6 6-channel 2.4GHz transmitter
LED lighting system
Model-specific tools
Please select the correct model and configuration before ordering.
ULTRA SERIES UPGRADES:
* The Ultra version introduces several structural and drivetrain upgrades compared with the standard platform.
ALL-METAL DRIVESHAFT:
6 HARDCORE UPGRADES INSIDE AND OUT：
* All-metal driveshaft
* Full-vehicle transmission pins upgraded with special materials
* Upgraded servo saver and steering buffer linkage
* Metal bull bar, bumperguard + spotlights
* Metal roll cage
* The original nylon driveshaft is upgraded to a CNC-machined all-metal driveshaft for increased rigidity and improved resistance to high-torque loads.
UPGRADED TRANSMISSION PINS WITH SPECIAL MATERIALS:
The transmission pins have been comprehensively replaced with specially reinforced materials, delivering an optimal balance of strength and toughness. Whether tackling extreme crawling or heavy-load towing, the drivetrain remains rock-solid - putting an end to any worries about pin breakage.
UPGRADED SERVO SAVER AND STEERING LINKAGE:
The steering system now features a professional-grade servo saver buffer structure that automatically absorbs and relieves force when the steering stalls or encounters excessive resistance. This provides much better protection for the entire vehicle mechanism, ensuring long-term durability under demanding conditions.
METAL BULL BAR, BUMPER GUARD AND SPOTLIGHTS:
The tough metal bull barfront bumper instantly amps up the aggressive, imposing stance of the vehicle. Paired with integrated guard-mounted spotlights, it delivers both powerful illumination and commanding presence - perfect for jungle treks and night crawling, where lighting and looks matter equally.
METAL ROLL CAGE:
The high-strength metal roll cage serves as the ultimate safeguard in the event of a rollover, while also doubling as a convenient carry handle for everyday transport and handling.
EXTENDED WHEELBASE:
The EMO XX Ultra platform features a 55 mm extended wheelbase, improving the overall stance and providing additional stability for off-road driving.
CHASSIS AND SUSPENSION:
* The 1/6-scale platform uses a 2 mm stamped steel simulation frame combined with 10 mm aluminum chassis links and a steel rear stabilizer link.
* The suspension uses large 26 mm CNC hydraulic shocks with adjustable spring preload. The front axle uses a steel CVD universal axle, while the rear uses a steel straight axle.
* The drivetrain features a 63T nylon silent spur gear, full steel transmission gears and full steel bevel gears. ABEC3 high-speed bearings are used throughout the drivetrain.
* The vehicles use nylon clamping wheel hubs and large-scale off-road tires designed for crawling and trail driving.
Packing size 4*4: 97*52*55 CM
Packaging weight 4*4: 23 KG
Packaging size 6*6: 118*52*55 CM
Packaging weight 6*6: 31 KG
Battery: XT60 11.1V 50C 3S 5200mAh Battery (optional)
Charger: SKYRC MAX B6AC 80W Balance Battery Charger (optional)