1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and setup of your Losi Promoto-SM 1/4 Super Moto Motorcycle FXR White RTR Basic. Please read this entire manual before operating the product to ensure proper function and to prevent damage or injury.

Image 1.1: The Losi Promoto-SM 1/4 Super Moto Motorcycle FXR White RTR Basic.
2. Safety Information
Operating this product requires caution and common sense. Failure to operate the product correctly can result in damage to the product, personal property, and cause serious injury. This product is not intended for use by children without adult supervision. Do not use with incompatible components or alter this product in any way outside of the instructions provided by Horizon Hobby, LLC. It is essential to read and follow all instructions and warnings in the manual prior to assembly, setup, or use.
3. What's in the Box
The Losi Promoto-SM 1/4 Super Moto Motorcycle RTR FXR package includes the following items:
- (1) Losi Promoto-SM 1/4 Supermoto Motorcycle RTR FXR
- (1) Spektrum Smart DX3PM Transmitter
- Battery
- (1) Bike Stand
- (1) Starting Stand
- Product Manual
- (1) Quick Start Guide
- (1) Chain Lube
- Tuning Parts
- Fork and Shock Tools
4. Needed to Complete
While the motorcycle is Ready-To-Run (RTR), additional items are required for full operation:
- 4 AA batteries for the Spektrum Smart DX3PM Transmitter
- Compatible charger for the included battery

Image 4.1: Icons representing the battery and charger required for operation.
5. Key Features
The Losi Promoto-SM motorcycle incorporates several design and functional enhancements:
- Fully assembled and ready-to-run.
- Updated lean bar position and wheels with bearings for improved stability and performance.
- New front brake caliper and piston for enhanced braking control.
- Supermoto-style SM street tires on smaller wheels, optimized for street and track performance.
- Supermoto front fender and hand guards for a realistic appearance and protection.

Image 5.1: Motorcycle in mid-air, showcasing its robust design.

Image 5.2: Motorcycle demonstrating its cornering capabilities.
6. Setup
Your Losi Promoto-SM is largely pre-assembled. Follow these steps to prepare for first use:
- Unboxing: Carefully remove all components from the packaging.
- Battery Installation: Install the included battery into the motorcycle as per the Quick Start Guide. Ensure it is securely connected.
- Transmitter Batteries: Insert 4 AA batteries into the Spektrum Smart DX3PM Transmitter.
- Charging: Fully charge the motorcycle's battery using a compatible charger before initial operation. Refer to the charger's manual for specific instructions.
- Binding: Follow the instructions in the Quick Start Guide to bind the transmitter to the motorcycle.
- Pre-Run Check: Ensure all screws are tight, moving parts are free, and the steering and throttle respond correctly to transmitter inputs.
7. Operating Instructions
Operating your Losi Promoto-SM requires practice and a suitable environment. Always operate in open areas free from obstacles, people, and pets.
- Power On: Turn on the transmitter first, then the motorcycle.
- Throttle Control: Use the throttle trigger on the transmitter to control forward and reverse movement. Gently apply throttle to start moving.
- Steering Control: Use the steering wheel on the transmitter to turn the motorcycle left or right. The motorcycle's self-balancing system will assist in maintaining upright stability.
- Braking: Apply reverse throttle to engage the brakes.
- Lean Bar: The updated lean bar position helps with stability during turns and stunts.
- Post-Run: Turn off the motorcycle first, then the transmitter. Disconnect and remove the battery from the motorcycle.
Official Product Video
Video 7.1: A review of the Losi RC Motorcycle Promoto-MX 1/4 Motorcycle RTR, demonstrating its features and performance.
8. Maintenance
Regular maintenance ensures the longevity and optimal performance of your motorcycle.
- Cleaning: After each use, clean the motorcycle to remove dirt, dust, and debris. Use a soft brush or compressed air. Avoid water near electronics.
- Inspections: Regularly inspect all moving parts, screws, and connections for wear, damage, or looseness. Tighten any loose screws.
- Chain Lube: Apply the included chain lube periodically to ensure smooth operation of the drive chain.
- Tire Condition: Check tires for wear and tear. Replace if necessary to maintain optimal grip.
- Battery Care: Store batteries in a cool, dry place. Follow manufacturer guidelines for charging and storage to maximize battery life.
Spektrum Smart G2 Technology Overview
Video 8.1: An overview of Spektrum Smart G2 Technology, relevant for battery and charger usage.
9. Troubleshooting
If you encounter issues with your Losi Promoto-SM, refer to the following common troubleshooting tips:
- No Power: Ensure the battery is fully charged and correctly installed. Check the power switch on both the motorcycle and the transmitter.
- Loss of Control: Verify that the transmitter and motorcycle are properly bound. Check for any interference in the operating area. Ensure transmitter batteries are fresh.
- Poor Performance: Inspect wheels and drivetrain for obstructions. Check for damaged or worn parts. Ensure the battery is fully charged.
- Unusual Noises: Stop operation immediately. Inspect for loose parts, debris in moving components, or damaged gears.
For persistent issues, contact Horizon Hobby customer support.
10. Specifications
| Specification | Value |
|---|---|
| Product Dimensions | 25 x 22.7 x 13.5 inches |
| Item Weight | 7.7 pounds |
| ASIN | B0DTB67HYR |
| Item Model Number | LOS-2272 |
| Manufacturer Recommended Age | 14 months - 2 years |
| Batteries Required | 4 AA batteries (for transmitter) |
| Release Date | January 16, 2025 |
| Manufacturer | Horizon Hobby |
11. Warranty and Support
For warranty information, please refer to the documentation included with your product or visit the official Horizon Hobby website. For technical support, parts, or service, please contact Horizon Hobby customer service directly.
Manufacturer: Horizon Hobby
Website: www.horizonhobby.com





