1. Introduction
The Killerbody MERCURY 1:10 High-Simulated Remote Control Car Chassis Kit (Model 48760) is designed for enthusiasts seeking a highly realistic RC experience. This chassis kit is pre-assembled with front and rear axles and a gearbox, and is specifically designed to fit the KB48765 1/10 Jeep Gladiator Rubicon Hard Body (sold separately).
Unlike traditional crawler chassis, the MERCURY chassis prioritizes the simulation of a real car's structure and performance. It features a V-8 engine simulation, electronic equipment mounting points, a 4WD/RWD shifting transmission system, and a differential lock mechanism. The suspension system includes a 3-linkage setup with coil springs at the front and a 4-linkage setup with damper cylinders at the rear, ensuring excellent performance over various terrains.

2. What's Included
The Killerbody MERCURY Chassis Kit (Model 48760) comes with the following components:

- Chassis Frame Kit (A): Includes girder assembly and chassis beams.
- Fuel Tank and Cross Member Kit (B): Components for the simulated fuel tank and chassis cross members.
- Battery Compartment Shell Kit (C): Housing for the battery.
- Engine and Transmission Housing Set (D): Pre-assembled F/R axle and gearbox, along with the simulated V-8 engine housing.
- Exhaust Pipe Kit (E): Simulated exhaust pipes and motor trims.
- Axle Set (F): Pre-assembled front and rear axle assemblies.
- Suspension System Package (G): Includes suspension girders, diff-lock wires, oil-filled shocks, and various suspension components.
- Steering Servo Bracket / Buffer (H): Brackets for mounting the steering servo and buffer components.
- Fender / Body Bracket (I): Components for mounting fenders and the body shell.
- Hub & Wheel Cover (J): Wheel hubs and covers.
- Screw and Tool Set (K): Assortment of screws and basic tools for assembly.
- Instruction Sheet.
3. Separately Required Items
To complete your RC vehicle, the following electronic and other components are required and are not included in this chassis kit:

- Battery: 2S 7.4V LiPo battery.
- Motor: 540 35T Motor.
- Motor Gear: m0.6 14-20T.
- Remote Control System: 2.4G 6-channel transmitter and receiver.
- Electronic Speed Controller (ESC): Compatible with your chosen motor and battery.
- Steering Servo: Standard servo (Size: 35mm*16mm/40mm*20mm; Torque: 5kg/12kg).
- Gear Shift Servo: (Size: 26mm*12mm*24mm/24mm*12.5mm*22.5mm).
- Differential Lock Servo: (Torque: 4kg/2.2kg).
- Body Shell: KB48765 1/10 Jeep Gladiator Rubicon Hard Body is recommended.
- Optional: Sound simulation, Light simulation, Smoke simulation modules.
4. Setup and Assembly
This chassis kit comes with pre-assembled front/rear axles and gearbox to simplify the build process. Follow the included instruction sheet for detailed step-by-step assembly. Key areas of assembly and installation include:
4.1 Chassis Frame and Drivetrain
The chassis features a separate frame construction made of PA & fiber composite material. The pre-assembled gearbox supports a 2-speed transmission (High/Low) controlled by a servo. The 4WD/RWD shifting transmission system is also servo-controlled. The differential uses a planetary gear differential with a jaw-type differential lock.

4.2 Suspension System
The front suspension utilizes a 3-linkage system with coil springs, while the rear features a 4-linkage suspension with damper cylinders. Short springs are provided for the original design, and longer springs are included for use with retrofitted large tires. The rear suspension can also be converted to a leaf spring setup by purchasing optional upgrade sets.

4.3 Electronic Equipment Installation
Install your chosen motor, ESC, receiver, and servos according to the diagrams. The chassis provides dedicated mounting points for these components. A simulated cooling fan can be installed when fitting a Jeep body. The battery tank is designed to hide a 2S 7.4V LiPo battery within the front compartment, offering approximately 60 minutes of run time.


4.4 Body Shell Installation
Once the chassis is fully assembled and electronics are installed, mount your chosen body shell (e.g., KB48765 1/10 Jeep Gladiator Rubicon Hard Body) using the provided body brackets and fixing points.

5. Operating Your MERCURY Chassis
The MERCURY chassis offers advanced features for a realistic driving experience:
- Two-Speed Transmission: Utilize the servo-controlled 2-speed gearbox to switch between high and low gears for different driving conditions. Low gear (ratio 35.4) provides more torque for crawling, while high gear (ratio 12.85) offers speed.
- 4WD/RWD Shifting: The transmission system allows for switching between 4-wheel drive and rear-wheel drive modes via your remote control, offering versatility in handling.
- Differential Lock: The jaw-type differential lock can be engaged or disengaged remotely. Unlocking the differential allows for smoother turns and prevents binding on hard surfaces, while locking it provides maximum traction for challenging off-road conditions, such as all-terrain crawling and side-sloping.
- Realistic Driving: The high-simulated design, combined with advanced suspension and drivetrain, provides a highly realistic driving posture and performance.
6. Maintenance
Regular maintenance will ensure the longevity and optimal performance of your MERCURY chassis:
- Cleaning: After each use, especially in dusty or wet conditions, clean the chassis to remove dirt, mud, and debris. Use a soft brush or compressed air.
- Inspection: Periodically inspect all screws, nuts, and bolts for tightness. Tighten any loose fasteners.
- Lubrication: Apply appropriate RC-grade lubricant to moving parts such as gears, bearings, and universal joints as needed.
- Suspension: Check the suspension components for wear or damage. Ensure shocks are functioning correctly and springs are not bent.
- Electronics: Keep electronic components clean and dry. Inspect wiring for any fraying or loose connections.
- Axles and Gearbox: Regularly check the axles and gearbox for smooth operation. If you notice any unusual noises or resistance, disassemble and inspect for worn parts.
7. Troubleshooting
If you encounter issues with your MERCURY chassis, consider the following general troubleshooting steps:
- No Power: Check battery charge, ensure all electronic connections are secure, and verify ESC and receiver are properly powered on.
- Loss of Control/Erratic Behavior: Check remote control battery, ensure receiver and transmitter are properly bound, and inspect for any interference. Verify servo connections and functionality.
- Poor Performance/Noise from Drivetrain: Inspect gears for damage or debris, ensure proper lubrication, and check for loose axles or wheel hubs.
- Suspension Issues: Check for bent suspension links, damaged shocks, or incorrect spring installation.
- Differential Lock Not Engaging/Disengaging: Verify the diff-lock servo is connected and functioning correctly, and check the diff-lock wire for obstructions or damage.
For persistent issues, consult the detailed instruction sheet or contact Killerbody support.
8. Specifications
8.1 Chassis Parameters

| Parameter | Value |
|---|---|
| Brand | Killerbody |
| Model Number | 48760 |
| Chassis Dimensions | 475mm × 215mm × 135mm |
| Approach Angle (Chassis) | 70° |
| Departure Angle (Chassis) | 36° |
| Ramp Breakover Angle (Chassis) | 35° |
| Chassis Dimensions (assembled Jeep, Item NO.48765) | 502mm × 215mm × 188mm |
| Wheelbase | 313mm |
| Tyre | 30mm × 87mm 1.55 inch wheel rim |
| Wheel Hub Adaptor | 12mm |
| Track Width (F/R) | 186mm / 183mm |
| Minimum Underground Clearance | 28mm |
| Battery Tank Dimensions | 93mm × 44mm × 18.5mm |
| Weight of Chassis | 1400g |
| Recommended Age | 14+ years |
| Material | PA & fiber (Composite Material) |
| Origin | Mainland China |
8.2 Drivetrain and Suspension

| Feature | Description |
|---|---|
| Chassis Frame | Separate frame construction |
| Driving | 4WD/RWD shifting transmission system |
| Front Suspension | 3-linkage suspension w/coil springs |
| Rear Suspension | 4-linkage suspension w/damper cylinder |
| Servo Compatibility | Steering servo, Gear shift servo, 4WD/RWD switch servo, Diff-lock servo |
| Transmission | 2 speeds (High/Low) |
| Gearbox Gear Ratio | Low gear: 35.4, High gear: 12.85 |
| Gearbox Type | Servo control 2 speed transmission |
| Transfer Case | Servo control transfer box |
| Differential | Planetary gear differential |
| Differential Lock | Jaw type differential lock |
9. User Tips
- Tire Upgrades: Consider purchasing additional tires for upgrades, as the chassis is designed to accommodate various tire sizes.
- Leaf Spring Conversion: For a different rear suspension feel, explore purchasing leaf spring upgrade sets to convert the rear suspension.
- Cooling Fan: When installing a Jeep body, a simulated cooling fan can be installed for added realism.
- Electronic Compatibility: Always ensure your chosen motor, ESC, and servos are compatible with each other and the battery for optimal performance and safety.
10. Warranty and Support
For specific warranty information, please refer to the terms and conditions provided by your retailer or contact Killerbody directly. For technical support, product inquiries, or to explore additional parts and upgrades, please visit the official Killerbody website:
