1/18 4WD Brushless RC Short Course Truck – Overview & Performance

Meet the SCY 18103 Pro, the upgraded brushless edition of our popular 1/18 short course truck. A 2845 3900KV brushless motor paired with a 35A splashproof brushless ESC delivers instant throttle response and speeds up to 50 km/h. With full-proportional steering/throttle, independent suspension, and a tough PVC body shell, this compact 4WD rally truck is built for high-speed off-road fun on sand, grass, or gravel.
Brushless Powertrain, Metal Drivetrain & LED Light System

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2845 3900KV brushless motor + 35A splashproof ESC for higher speed and efficiency
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All-metal drivetrain: metal differential, metal center drive shaft, metal steering knuckles, metal arm mounts
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LED light package: front headlights, roof light bar, rear red lights (steady / slow flash / fast flash)
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Full-proportional steering and throttle for precise control
- 15 ball bearings throughout for smooth, efficient power delivery
- Sealed transmission with reinforced structure for durability
SCY 18103 Pro Technical Specs & Dimensions

| Stock Number |
YY18103PROPB / YY18103PROGG |
| Model |
SCY 18103 Pro (Brushless) |
| Scale / Type |
1/18 4WD Short Course Truck (RTR) |
| Motor |
Brushless 2845 3900KV |
| ESC |
35A brushless ESC (splashproof) |
| Battery (included) |
7.4V 1500mAh Li-ion (T plug) |
| Top Speed |
Up to 50 km/h
|
| Control Distance |
≥ 80 m |
| Run Time |
Driver-dependent (optimize with 2S LiPo) |
| Dimensions (L×W×H) |
30.5 × 17.5 × 13.5 cm |
| Wheelbase / Track / Tire Ø |
165 mm / 173 mm / 70 mm |
| Lights |
Front headlights, roof lights, rear lights (3 modes) |
| Suspension |
Independent double-wishbone with upright spring shocks |
| Body |
High-toughness PVC shell with anti-loss clips |
Reinforced Aluminum Alloy Chassis

An aluminum alloy bottom plate increases rigidity and reduces chassis flex during high-speed cornering and landings. It spreads impact loads across the frame, protecting the drivetrain and keeping handling smooth on uneven terrain.
Adjustable Metal Shock Absorber System

Full-metal, serviceable shocks with a removable spring washer let you fine-tune stiffness and rebound. Dial them in for bashing, rally-style slides, or precise cornering—maintaining traction across rough surfaces.
All-Terrain Tires & Metal Wheel Hubs
Anti-slip, wear-resistant off-road tires are paired with metal wheel hubs secured by screw locks. This prevents tire separation under high torque and keeps the wheels true across asphalt, gravel, and sand.
Best 2S LiPo Battery Upgrades for 18103 Pro (T Plug Compatible)
Unlock the Pro’s full potential with high-discharge CNHL 2S LiPo packs:
These packs deliver higher burst current, cooler operation, and longer runtime than the included Li-ion battery.
What’s Inside the SCY 18103 Pro RC Truck Box
- 1 × SCY 18103 Pro 1/18 4WD Brushless RC Truck
- 1 × 7.4V 1500mAh Li-ion Battery (T plug)
- 1 × 2.4GHz Transmitter
- 1 × USB Charger
- 1 × English Manual
SCY 18103 Pro FAQs – Battery, Speed & Terrain Guide
Q: How is the Pro version different from the standard 18103?
A: The Pro replaces the brushed motor with a brushless 2845 3900KV system and a 35A ESC, providing faster acceleration, higher top speed (up to 50 km/h), and better efficiency.
Q: Can I run 2S LiPo batteries?
A: Yes. The 35A brushless ESC supports 7.4V 2S LiPo packs with a T plug. We recommend the CNHL 1300–1500mAh options above.
Q: Is the electronics waterproof?
A: The ESC is splashproof for light water and damp surfaces. Avoid full submersion.
Q: What terrain is best?
A: The 18103 Pro performs great on asphalt, short grass, gravel, and dry sand. Avoid deep water or thick mud.
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