RGT EX86170 PRO Challenger Upgraded version RC Car 1/10 4WD Brushless Rock Crawler Off-Road Truck Two Speed DIG Portal Axle
RGT EX86170 PRO Challenger is a 1/10 scale 4WD brushless crawler designed for technical trails, controlled climbs and scale off-road driving. The RGT EX86170 PRO Challenger combines a Hobbywing FOC brushless system with a two-speed transmission, DIG rear-axle function, selectable front-wheel drive and 4WD, portal axles, a remotely adjustable rear anti-roll bar and a built-in winch.
Key Features:
Integrated Hobbywing FOC Brushless System
The RGT EX86170 PRO Challenger uses an integrated Hobbywing FOC system that combines the ESC and 1800KV brushless motor in one compact unit. This layout reduces power-system size and weight while simplifying chassis packaging and wiring. The motor delivers strong low-speed torque, smooth linear throttle response and quiet operation for controlled crawling.
The integrated power system includes a 7.4V 3A BEC for high-voltage servos. Closed-loop torque and speed control support steady low-speed driving and controlled descents. Adjustable drag braking helps the RGT EX86170 PRO Challenger hold position on slopes; the maximum drag-brake force is approximately twice that of a conventional brushless system.
The power system has IP67 protection. ESC safeguards include low-voltage, overheat, throttle-signal-loss and stall protection. An LED programming box can be used to adjust ESC parameters through the dedicated setting interface.
Low-Center-of-Gravity Chassis and Two-Speed Transmission
The RGT EX86170 PRO Challenger features a low-center-of-gravity chassis with a reverse-drive layout, a #45 steel reduction shaft and metal transmission gears. Its two-speed transmission provides low and high gearing for technical crawling and faster trail sections.
The DIG system controls the rear-axle connection to help the RGT EX86170 PRO Challenger reduce its turning radius on tight lines. The drivetrain also supports selectable front-wheel drive and four-wheel drive. The CNC aluminum T6 motor mount is compatible with 17T–21T pinions.
Portal Axles and Steel Drivetrain Components
The portal axles on the RGT EX86170 PRO Challenger use CNC spiral steel gears and powder-steel portal reduction gears. Brass front steering-mount covers add unsprung weight at the front axle to support the vehicle’s weight distribution during climbs.
Axle-mounted servos, C-caster design and impact-resistant nylon steering mounts complete the front and rear axle setup. Steel center CVD shafts and precision rubber-covered bearings support consistent power transfer through the all-metal gear drivetrain.
Five Metal-Gear Servos and Built-In Winch
The RGT EX86170 PRO Challenger uses five 7.4V splash-proof metal-gear servos. The steering servo is rated at 35kg. Its built-in winch uses a 25kg 360-degree metal-gear servo with a concealed line guide and a 90cm steel cable. The listed pulling capacity is up to 15kg on flat ground.
Three 7.4V 9g powder-steel-gear servos operate the RGT EX86170 PRO Challenger auxiliary functions.
Remotely Adjustable Rear Anti-Roll Bar
The rear anti-roll bar on the RGT EX86170 PRO Challenger can be connected or disconnected from the transmitter. When connected, it helps reduce body roll during turns. When disconnected, it allows greater suspension articulation over uneven terrain.
Large-Diameter Metal Shocks and Scale Details
The RGT EX86170 PRO Challenger is equipped with large-diameter metal shock absorbers and nano-coated shock shafts for a smooth suspension response and added surface protection. Electroplated scale-style wheel hubs and wider tires with deeper tread complete its crawler setup.
The body features a matte finish, an interior cab and scale accessories. The RGT EX86170 PRO Challenger is available in Blue, Dark Grey, Bright Silver and Army Green.
Specifications
| Spec | Detail |
|---|---|
| Brand / Model | RGT EX86170 PRO Challenger |
| Scale | 1/10 |
| Vehicle Type | 4WD Brushless Rock Crawler |
| Drive Modes | Selectable front-wheel drive and 4WD |
| Motor | Hobbywing FOC 1800KV brushless motor |
| ESC | Hobbywing FOC 40A ESC |
| BEC | 7.4V / 3A |
| Power-System Protection | IP67 |
| Transmission | Two-speed transmission |
| DIG Function | DIG rear-axle function |
| Gear Ratio Low | Front 49.8:1 / Rear 53:1 |
| Gear Ratio High | Front 26.3:1 / Rear 28:1 |
| Overdrive | 6.6% |
| Axles | Portal axles with steel reduction gears |
| Steering Servo | 35kg metal-gear servo |
| Winch Servo | 25kg 360° metal-gear servo |
| Auxiliary Servos | 7.4V 9g powder-steel-gear servos × 3 |
| Winch Line | 0.8mm diameter × 90cm steel cable |
| Listed Winch Pulling Capacity | Up to 15kg on flat ground |
| Radio System | 2.4GHz XA8 8-channel system |
| Wheelbase | 31.3cm |
| Body Dimensions | 48.5 × 25.8 × 24.6cm |
| Wheel Size | 12 × 4.5cm |
| Ground Clearance | 7cm chassis / 5.4cm axle |
| Approach Angle | 80° |
| Breakover Angle | 30° |
| Departure Angle | 70° |
| Recommended Battery | 2S–3S LiPo or 7.2V NiMH battery |
| Vehicle Weight | 3.20kg without battery |
| Package Dimensions | 61 × 29 × 30cm |
| Package Weight | 5.17kg |
| Available Colors | Blue / Dark Grey / Bright Silver / Army Green |
Version Selection
Choose the Battery+Chargers option for the RGT EX86170 PRO Challenger that matches your setup:
- Not included: The vehicle is supplied without the optional battery and charger.
- Inclusion: Includes the BOMETOYS 7.4V 6200mAh 30C battery and B3 20W charger.
The XA8 transmitter requires four AA batteries, which are not included.
Package Contents
- 1 × RGT EX86170 PRO Challenger RC crawler
- 1 × 2.4GHz XA8 transmitter
- 1 × Built-in winch with 90cm steel cable
- 1 × User manual
- Battery and charger according to the selected option
- 4 × AA batteries for the transmitter are not included
Frequently Asked Questions:
What battery can I use with the RGT EX86170 PRO Challenger?
The RGT EX86170 PRO Challenger supports a 2S–3S LiPo battery or a 7.2V NiMH battery. Check battery dimensions and connector compatibility before use. The optional BOMETOYS package includes a 7.4V 6200mAh 30C battery.
Does the selected battery option include a charger?
Select Not included for the RGT EX86170 PRO Challenger without the optional battery and charger, or Inclusion for the BOMETOYS 7.4V 6200mAh 30C battery and B3 20W charger.
What does the DIG function do on the RGT EX86170 PRO Challenger?
The DIG function controls the rear-axle connection and helps the RGT EX86170 PRO Challenger make tighter turns on technical trails.
Can the RGT EX86170 PRO Challenger switch between front-wheel drive and four-wheel drive?
Yes. The drivetrain supports selectable front-wheel drive and 4WD, along with the two-speed transmission.
Can I control the rear anti-roll bar from the transmitter?
Yes. The RGT EX86170 PRO Challenger rear anti-roll bar can be connected or disconnected from the transmitter. Connecting it helps reduce body roll; disconnecting it allows more suspension articulation.
Does the RGT EX86170 PRO Challenger have a winch?
Yes. The RGT EX86170 PRO Challenger has a built-in winch with a 25kg 360-degree metal-gear servo and a 90cm steel cable. The listed pulling capacity is up to 15kg on flat ground.
What batteries does the transmitter need?
The XA8 transmitter supplied with the RGT EX86170 PRO Challenger requires four AA batteries. They are not included.
Are replacement parts available for the RGT EX86170 PRO Challenger?
BOMETOYS provides full replacement-parts support for the RGT EX86170 PRO Challenger. Send us a photo of the part and its part number, and we will help match the correct replacement.