- Description
- Key Features
- In the Box
- Needed to Complete
The Ultimate Scale Supermoto Experience Built for the Tarmac
The Losi 1/4 Promoto-SM FXR brings the thrilling, high-adrenaline world of supermoto road racing directly to the radio-control hobby. Engineered from the ground up to carve corners, pull massive wheelies, and dominate hard asphalt surfaces, this master-scale two-wheeler blends breathtaking scale realism with cutting-edge gyroscopic stabilization and raw brushless power.
Innovative Spektrum MS6X Technology & Flywheel Stability
Riding a high-performance RC motorcycle requires exceptional stability, and the Promoto-SM delivers via an integrated, heavy steel flywheel spinning at over 22,000 RPM. Paired with patent-pending Spektrum MS6X stabilization technology, the bike automatically mimics authentic motorcycle dynamics. It handles low-speed maneuvers with poise, leans hard into sweeping corners without tipping, and rights itself instantly with a simple blip of the throttle if it ever slides low.
Blistering Brushless Speed & Smart G2 Electronics
Outfitted with a potent Spektrum Firma 3652 3800Kv 4-pole brushless motor and an 85A Brushless Smart Motorcycle ESC, the Promoto-SM tears down straightaways at speeds exceeding 40+ MPH (64+ KM/H). This premium factory bundle comes complete with a high-capacity Spektrum Smart G2 2S 5000mAh LiPo battery and an S120 USB-C Smart charger, featuring automatic charging profile uploads for stress-free power management.
True-to-Scale Suspension & Pro-Line Street Tires
The Promoto-SM is built on a narrow 3mm thick aluminum twin-plate chassis for an ultra-realistic profile. Front-end bumps are absorbed by a fluid-dampened front fork with an internal spring, while the rear utilizes a rising-rate suspension link paired with a 16mm big-bore aluminum shock. To lock onto concrete and asphalt, it rides on smaller supermoto wheels wrapped in sticky Pro-Line Racing OE Supermoto street tires.
Dual Braking Power & Advanced Drive Modes
Stopping power is cut in half thanks to a functional, cable-driven front disc brake system featuring a redesigned floating piston caliper working in harmony with rear motor braking. Drivers can seamlessly toggle between three pre-programmed electronic drive modes on the Spektrum DX3PM transmitter: Dirt Mode (controlled power), Street Mode (anti-wheelie safety), and Wheelie Control (unleashed stunt mode).
Note: The included Spektrum Smart S120 charger requires a standard USB power block or wall adapter supporting Quick Charge 2.0/3.0 or a high-output USB outlet (minimum 2A output, sold separately) to reach maximum charging efficiency.
