Losi Promoto-SM FXR Supermoto Motorcycle - RTR
Brand: Losi
Part No: LOS-2272
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The Losi Promoto-SM FXR Supermoto Motorcycle RTR delivers a remarkably authentic on-road RC bike experience on concrete, asphalt and other hard surfaces. With officially licensed FXR graphics, a realistic rider figure and supermoto-specific details such as a shortened front mudguard and hand guards, it looks the part. Pro-Line SM street tyres on smaller wheels, a stronger front brake caliper and revised lean bar wheels let the Promoto-SM lean farther with reduced noise and improved grip.
Under the bodywork, advanced electronics and mechanical engineering combine for confident, realistic handling. Patent-pending Spektrum MS6X technology interprets your inputs from the included Spektrum Smart DX3PM transmitter so the bike leans, turns and wheelies with impressive balance. A frame-integrated steel flywheel, spun by the 2700Kv brushless motor at over 22,000 rpm, generates gyroscopic stability, while the rising rate rear suspension and tunable front fork (internal spring and damper with silicone fluid) provide sure-footed control. Dual braking — a functional, cable-driven front disc plus rear motor braking — shortens stopping distances, and the powerful brushless system delivers 40+ mph performance. Part number LOS-2272.
Key Features
- Officially licensed FXR graphics
- Patent-pending Spektrum MS6X technology
- Frame-integrated, high-RPM flywheel
- Rising rate rear suspension
- Powerful brushless system with 40+ mph speeds
- Dirt, Street, and Wheelie Control drive modes
- Collapsible front crash structure
- Realistic rider figure with authentic riding gear
- Functional, cable-driven front disc brake
- Chain drive with dual disc performance slipper clutch
- Hands-free starting stand included
- Keyed bike stand included
Key Specifications
- Completion level: Ready-To-Run (RTR)
- Scale: 1/4
- Power type: Electric brushless (540 size)
- LiPo compatibility: 2S (IC5 connector)
- Top speed: 40+ mph
- Drivetrain: 1WD, 32-pitch gearing (20T pinion / 50T spur)
- Brakes: Front cable-driven disc, rear motor braking
- Chassis: 3mm aluminium plate
- Suspension: Front fork with internal damper; rising rate rear
- Shock: 16mm big bore aluminium
- Ground clearance: 57 mm; Wheelbase: 353 mm
- Dimensions (approx.): L 503 mm x W 259 mm x H 424 mm
- Tyre tread: Supermoto S3; Compound: 35S
- Radio, ESC and servos: Included
What’s Included
- Losi Promoto-SM 1/4 Supermoto Motorcycle RTR FXR
- Spektrum Smart DX3PM transmitter
- 4 x AA transmitter batteries
- Bike stand
- Starting stand
- Product manual
- Quick start guide
- Chain lube
- Tuning parts
- Fork and shock tools
Needed to Complete
- 2S LiPo battery with IC5 connector and a compatible charger
Secured by Stripe
Powering off the line, speeding down straights, and leaning through curves and turns, a unique harmony develops between a bike and its rider. The two intuitively become one. Despite its power, the two-wheeler feels light and nimble as it reacts instantly to your cues — as if it's simply an extension of you.
That's also how it feels to drive Losi Promoto RC bikes.
The Losi Promoto-MX was the first RC dirt bike to accurately reproduce the full experience and pure fun of riding a real motorcycle. Now, for on-road RC and motorcycle fans, Losi presents the Promoto-SM — the most authentic supermoto experience ever offered in a radio-control bike.
The Promoto-SM is particularly well-suited for concrete, asphalt, blacktop, and other hard surfaces found at neighborhood streets, local parks, and parking lots. Key differences from the Promoto-MX include new Pro-Line Racing OE (Original Equipment) SM street tires on smaller wheels, a more powerful front brake caliper, and revised lean bar wheels. The Promoto-SM can lean farther than its dirt bike counterpart, and the lean bar tires decrease noise and offer better traction on hard surfaces.
The Losi Promoto-SM also looks like a true supermoto bike. Its distinctive visual details include hand guards, shortened front fender, and officially licensed FXR graphics and rider gear.
What the Promoto-SM shares with the breakthrough Promoto-MX is an innovative blend of mechanical and electronic technology that work together to provide a realistic experience that no other RC bike can touch. The electronics include a 2700Kv motor and steel flywheel that are both mounted in the center of the frame. The motor spins the flywheel at over 22,000 rpm to create a gyroscopic force for unparalleled stability. Patent-pending Spektrum MS6X technology takes your input from the Spektrum DX3PM transmitter and commands the Promoto-SM to lean, turn, and wheelie with unprecedented balance and finesse.
The mechanical technology is equally impressive. Losi's product development team studied full-size motorcycle suspension geometry to give Promoto RC bikes the same terrain handling characteristics. A rising rate rear suspension provides superior grip and prevents bottoming out in landings. Their completely new front fork design, with an internal spring and dampener, can be tuned by changing the silicone dampening fluid and also allows ride height adjustments. An innovative front and rear wheel braking system adds impressive stopping power, cutting the stopping distance in half compared to rear brake only.
Both technologies, electronic and mechanical, are why the Promoto platform performs better at high and low speeds than any previous RC motorcycle. Now, with the Losi Promoto-SM, there's an RC bike that really works — with tarmac-ready performance and style!
Losi 1/4 Promoto-SM FXR Supermoto RC Motorcycle RTR Features- Officially licensed FXR graphics
- Patent-pending Spektrum MS6X technology
- Frame-integrated, high-RPM flywheel
- Rising rate rear suspension
- Powerful brushless system with 40+ mph speeds
- Dirt, Street, and Wheelie Control drive modes
- Collapsible front crash structure
- Realistic rider figure with authentic riding gear
- Functional, cable-driven front disc brake
- Chain drive with dual disc performance slipper clutch
- Hands-free starting stand included
- Keyed bike stand included
1/4 Promoto-SM FXR Supermoto Motorcycle RTR Basic Specfications:
- Approximate Assembly Time: Less than 1 Hour
- Ball Bearings: Full Ball Bearings
- Battery: Sold Separately
- Body: Color Molded Panels with Wrap Graphics
- Brakes: Front - Cable Driven Piston/Caliper/Rotor, Rear - Motor Braking
- Charger: Sold Separately
- Chassis: 3mm Aluminum Plate
- Completion Level: Ready-To-Run
- Connector Type: IC5
- Drivetrain: 1WD
- Final Drive Ratio: 12.0:1
- Gear Pitch: 32-pitch
- Ground Clearance: 2.2 in (57mm)
- Inner Tire / Outer Wheel Diameter: 4.03 / 4.06 in
- Internal Gear Ratio: 4.8:1
- LiPo Compatibility: 2S
- Motor Size: 540
- Motor Type: Brushless
- Pinion: 20T
- Power Type: Electric
- Product Height: 16.7" (424 mm)
- Product Length: 19.8" (503 mm)
- Product Weight: 129.4 oz (3540g)
- Product Width: 10.2" (259 mm)
- Radio: Included
- Scale: 1/4
- Servos: Included
- Shock Type: 16mm Big Bore Aluminum Shock
- Speed Control: Included
- Spur Gear: 50T
- Suspension: Front Fork, Rising Rate Rear Suspension
- Tire Compound: 35S
- Tire Tread: Supermoto S3
- Top Speed: 40+
- Vehicle Size: Standard
- Vehicle Type: Motorcycle
- Wheel Width: Front - 1.1 in (28mm), Rear - 1.4 in (36.3mm)
- Wheelbase: 13.9" (353 mm)
- (1) Losi Promoto-SM 1/4 Supermoto Motorcycle RTR FXR
- (1) Spektrum Smart DX3PM Transmitter
- (4) AA Transmitter Batteries
- (1) Bike Stand
- (1) Starting Stand
- (1) Product Manual
- (1) Quick Start Guide
- (1) Chain Lube
- Tuning Parts
- Fork and Shock Tools
- 2S LiPo Battery with IC5 connector and compatible charger
Key Info:
- Brand: Losi
- Part No: LOS-2272
- Barcode: 660132628758
- Scale: 1:4
- Build Level: Assembled (RTR)
- Vehicle Type: Bike
- Power Source: Electric - Brushless
- Surface Type: On Road
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