SKU: 54200198252

Losi 1/4 Promoto-MX Motorcycle RTR with Battery and Charger, Pro Circuit

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Description

Losi 1/4 Promoto-MX Motorcycle RTR with Battery and Charger, Pro CircuitThe Losi Promoto MX isn't the first scale RC motorcycle that's ever been sold. But it is the very first one that accurately reproduces the full experience and pure fun of riding a real motorcycle. It's the long awaited dream of RC hobbyists and dirt bike fans alike. The unprecedented realism of the Promoto MX goes much deeper than its faithfully detailed looks the narrow frame, rider gear, and officially licensed graphics. Even more impressive is how

The Losi Promoto-MX isn't the first scale RC motorcycle that's ever been sold. But it is the very first one that accurately reproduces the full experience — and pure fun — of riding a real motorcycle. It's the long-awaited dream of RC hobbyists and dirt bike fans alike.

The unprecedented realism of the Promoto-MX goes much deeper than its faithfully detailed looks — the narrow frame, rider gear, and officially licensed graphics. Even more impressive is how successfully it captures true dirt bike performance, a breakthrough accomplished through a unique hybrid of mechanical and electronic technology developed specifically for the Promoto-MX. It's how these technologies work together that makes all the difference.

Promoto-MX 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. Meanwhile, patent-pending Spektrum MS6X technology takes your input from the DX3PM transmitter and commands the Promoto-MX to lean, turn, and control wheelies with unprecedented balance and finesse.

The mechanical technology is equally impressive. Losi's product development team studied full-size motorcycle suspension geometry to give the Promoto-MX the same terrain handling characteristics. A rising rate rear suspension provides superior grip and prevents bottoming out in landings. The 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 gives the bike impressive stopping power, cutting the stopping distance in half compared to rear brake only.

Both technologies, electronic and mechanical, are why the Promoto-MX performs better at high and low speeds than any previous RC motorcycle. For dirt bike fans, the "feel" of the Promoto-MX will be instantly familiar. RC car enthusiasts will discover a new way to drive that pulls you deep into the heart of the action — carving berms, skimming whoops, holding wheelies, and throwing roost.

Finally. An RC dirt bike that really works! Anytime and anywhere, just grab your Losi Promoto-MX, get in the zone, commit to your line, and begin to be the bike.

Features

  • The best-looking and best-performing RC dirt bike ever made
  • New, patent-pending Spektrum MS6X technology
  • Frame-integrated, high-RPM flywheel
  • Officially licensed Pro Circuit graphics and rider gear
  • Officially licensed Dunlop MX53 tires
  • 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
  • Fully assembled and ready-to-run — battery and charger included

 

Support Video Playlist

Can the Losi Promoto be FPV?
Check this video out from our friend Paul Nurk

 


  

 
PATENT-PENDING SPEKTRUM MS6X TECHNOLOGY

The new Spektrum DX3PM transmitter and SR6300PM receiver combine with patent-pending MS6X technology for unprecedented control. Promoto-MX drivers can maintain balance at high or low speeds and over jumps and whoops, then give simple steering inputs to carve around tight berms and straighten up heading into the next rhythm section. For more aggressive driving, use the MS6X knob to increase the lean angle.

 

 
"ON THE FLY" DRIVE MODES

The DX3PM has three preprogrammed drive modes that you can toggle between "on the fly" using your thumb on the A/B rocker switch.

  • Dirt Mode — Allows the Promoto-MX to pitch up enough without clipping the throttle for going up jump faces and obstacles, but helps prevent "wheelie-overs" by intuitively clipping the throttle output if the bike begins to pitch up too far.
  • Street Mode — Senses when the Promoto-MX starts to pitch up and clips the throttle quickly, getting the front tire back on the ground to accelerate as much as possible.
  • Wheelie Control — Let 'em rip! Wheelie Control lets you hold wheelies on smooth surfaces all the way to top speed.

 

 

 
SMART TECHNOLOGY

How much battery life is left on your bike? You don't have to guess. LED indicators on the DX3PM transmitter show you the remaining capacity of your Spektrum Smart batteries at glance! Using Spektrum Smart Technology, the Promoto-MX stores and shares critical performance data while you run. Upgrade to the Spektrum DX5C or DX5 Pro to receive additional telemetry information in real-time, such as speed, RPM, amp draw, ESC temperature, and more.

 

 
FLYWHEEL UNIT

The gyroscopic stabilization force created by its heavy steel flywheel — spinning at over 22,000 rpm with the 2700Kv motor — does wonders for the motorcycle's stability. Mounted as low and as far forward as possible in the frame, the flywheel unit enables the Promoto-MX to pivot around its center point to improve jumping, changes of direction, and the accuracy of the bike's performance.

 

 
LEAN BARS

Don't worry if the front tire washes out on loose dirt. The lean bars are ready to catch it. They'll keep the Promoto-MX from going over its maximum lean angle, helping push it back upright to straighten out and exit the turn. The lean bars have adjustable stops for up and down travel, so you can dial in the bike for any surface or grip level. They also often help with crash recovery when the rear tire has traction. If the bike is down on the track, simply hit the throttle to stand it upright and resume driving.

 

 
SERVO SAVER

The servo saver's stiff circular springs, captured by bearing-mounted composite plates, provide consistency in steering with enough give to protect the servo. But that's not all. It also drastically improves the bike's performance when setting down from wheelies, landing from jumps, power sliding through a turn, and pushing the front tire over a rut. It gives so the bike stays up.

 

 
HEAD DAMPING

With 8-pounds rapidly powering down the track, it takes quite a stiff servo saver spring setup to properly guide the Promoto-MX into the next turn. Like anything heavily sprung, the best way to control the strong springs is to dampen the movement. A key development for the Promoto-MX is a fluid-filled friction chamber between the upper and lower head tube bearings. The chamber is filled with heavy 500,000cSt which dampens the servo saver well and helps to control any possible "head shake."

 

 
ELECTRONICS INCLUDED

 

  • Transmitter (Spektrum DX3PM Smart DSMR)
  • Receiver (Spektrum 6-Channel DSMR Promoto Receiver)
  • Steering Servo (Spektrum S620PM Metal Gear Servo)
  • Front Brake Servo (Spektrum SX108PM Micro Servo)
  • Motor (Spektrum Firma 3652 3800Kv 4-Pole Brushless Motor)
  • Flywheel Assembly (Spektrum Motorcycle Stator & ESC Assembly / Spektrum Motorcycle Flywheel Assembly)
  • Electronic Speed Control (Spektrum Firma 85A Brushless Smart Motorcycle ESC)
  • Battery (Spektrum 5000mAh 2S 7.4V Smart G2 50C LiPo Battery with IC5 Connector)
  • Charger (Spektrum Smart S120 USB-C Charger, 1x20W) with IC3 / IC5 adapter

 

 

 
NARROW CHASSIS

To capture the proper scale looks, the bike's electronics and battery all had to fit within a compact, narrow chassis. Requiring a special "shorty" battery would have made the design task simple, but the Promoto-MX product development team wanted to use a more convenient, standard size battery. Mission accomplished! A full-size 2S hardcase LiPo fits within the rider's seat, easy to access for quick battery changes. Pop in a charged pack and you're back to roosting your competition in seconds.

 

 
REALISTIC RIDER FIGURE

Complete with boots, brain bucket, and riding gear, the rider figure is ready for all of the same dirt bike-style action as you — to jump, wheelie, carve berms, and throw roost. The rider figures of other RC motorcycles are made entirely of foam, which quickly fails. The Promoto-MX rider has a rubberized plastic exterior that can give and flex under impacts and flips. To keep the rider from bobbling around on the bike, the torso has a foam insert. It keeps the body firm during normal operation but still able to give under impact.

 

 
OFFICIALLY LICENSED DUNLOP GEOMAX MX53 TIRES

Just as any real dirt bike rider would want, the Promoto-MX comes equipped with the most popular Dunlop dirt bike tire tread, the Geomax MX53. It's officially licensed by Dunlop for scale accuracy and performance. The MX53 delivers on full-scale moto tracks around the world, and it provides high grip and long tire life for the Promoto-MX.

 

 
TRUE-SPOKE WHEELS

Its realistic, true-spoke wheels are another first for the Promoto-MX. No other RC manufacturers have been able to create proper-looking spoked wheels with the durability needed for a dirt bike. It took the determination and expertise of the Losi product development team to make it happen.

 

 
OFFICIALLY LICENSED TEAM PRO CIRCUIT GRAPHICS

Losi partnered with the highly successful Pro Circuit supercross race team to create the officially licensed graphics for the Promoto-MX. Since 1991, Pro Circuit has fielded the strongest, most consistent team on the AMA Supercross circuit. Going back to its first starting lineup, over 50 riders have ridden for the Pro Circuit race team, collectively earning an impressive 31 AMA Championships and six MXoN victories.

 

 
DISPLAY/MAINTENANCE & STARTING STANDS

Working on a real dirt bike is easier with a proper bike stand. So the Promoto-MX had to have one, too! The included stand for maintenance and display is modeled after a real bike stand, complete with graphics. To keep the bike balanced on the stand, the Promoto-MX keys into the bike stand. Taking it a step further, a hands-free starting stand is also included. This starting stand cradles the rear tire and holds the bike upright and ready for a gate-style start.

 

 
PLASTICS WITH GRAPHICS

Big or small, no dirt bike would look right without a proper body panel kit wrapped in vinyl graphics. The Promoto-MX has all the goods — front fender, number plate, fork guards, front side panel, rear side panel, and rear fender — all looking fresh wrapped in officially licensed vinyl graphics, but highly durable and ready to get dirty.

 

 
REALISTIC DETAILS

Even tiny touches matter, and Losi hasn't overlooked a thing. Brake and clutch levers, exhaust, brake line, foot pegs, brake rotors, you name it — everything about the Promoto-MX is finely detailed.

 

 
FRONT CRASH STRUCTURE

There's nothing better than sending a huge triple, but what happens if you come up short? Bending a fork leg or tube was not an option, so the Promoto-MX product development team found a solution. The front crash structure is rigid during normal running, but compresses until the front tire bottoms into the chassis frame to absorb those massive front impacts. That protects the front fork tubes from bending, keeping them safe and true.

 

 
REAR FENDER

Wheelies happen. A normal, rigid-mounted rear fender would really take a beating. But the Promoto-MX has the solution — a hinged elastomer sprung rear fender that can deflect out of the way during wheelies to expose a durable nylon rear bumper. It substantially increases the durability of the rear fender.

 

 
SKID PLATES & AIR VENTS

Molded composite skid plates line the front and bottom of the Promoto-MX chassis. They offer protection during crashes and keep roost out of the chassis, helping to protect the electronics mounted inside. The air vents on each side of the bike come closed in the box, but can be opened to provide cooling airflow when ambient temperatures are high.

 

 
TWIN ALUMINUM PLATE CHASSIS

Twin aluminum chassis plates house and protect all of the bike's electronics and help to give the Promoto-MX its realistically narrow appearance. They also give the frame the rigidity and durability required for harsh impacts.

 

 
RISING RATE REAR SUSPENSION

Just like a real dirt bike, the Promoto-MX has a rising rate rear suspension. The suspension starts soft around ride height, for smooth handling and a superior grip. It becomes firmer as it gets deeper into up travel, to provide proper preload on jumps and prevent bottoming out in landings. Dialed in with a full oil-filled coil-over shock, the Promoto-MX is ready to rip on any surface.

 

 
FRONT FORK

The front fork of the Promoto-MX is a completely new and modern design with an internal spring and dampener. Designed to work similar to normal RC shocks, the front fork tubes can be rebuilt and tuned by changing the silicone dampening fluid. Using counter-wound upper and lower springs, spacers can be used to adjust the ride height of the Promoto-MX as well. And maybe most importantly, they look awesome — just like the real deal.

 

 
HEAD ANGLE

After months of testing different trail settings, head angle, and steering ratios, the Promoto-MX product development team found the sweet spot. A head tube angle of 62.4 degrees gives it the best balance of bump handling, landing jumps, steering input, and "head shake" control on all surfaces.

 

 
BRUSHLESS POWER SYSTEM

The Promoto-MX comes out of the gates HOT with a powerful Spektrum Smart brushless power system. Its 4-pole 3652 3800Kv motor puts down the power while the 85A brushless ESC adds all the control you need. With enough torque to clear large triples — and massive 40+ mph top speeds on a 2S LiPo battery — the Promoto-MX power system rips!

 

 
FRONT CABLE-DRIVEN DISC BRAKE

Hauling on your bike is a lot more fun when you've got good brakes. The motor can handle rear braking through the drivetrain, but like 1:1 motorcycles, most of the braking happens with the front tire. To slow the Promoto-MX down from the front, the front brake uses a steel rotor, caliper-actuated brake pads, and servo-driven cable. It cuts your stopping distance in half — just what you need to catch the next berm.

 

 
RACE-INSPIRED SLIPPER CLUTCH

As its 3800Kv Firma Brushless motor puts out abundant power, the Promoto-MX's race inspired dual disc slipper clutch helps the Dunlop Geomax MX35 rear tire keep traction on loose surfaces. The dual pad, spring pressurized slipper clutch takes inspiration from those that the TLR team uses to win races across the globe. It increases traction and protects the drivetrain without sacrificing explosive drive.

 

 
REALISTIC CHAIN DRIVE

We could not call the Promoto-MX a dirt bike if wasn't chain driven. Steel links and 70 roller pins wrap around a 10-tooth steel drive sprocket and a 36-tooth aluminum hub sprocket. Regardless of conditions, the chain drive will drive the rear tire efficiently and reliably.

 

 
READY-TO-RUN

The Losi Promoto-MX comes fully assembled, with a high-quality Spektrum Smart radio system included and on-board electronics already installed. Even AA transmitter batteries are supplied! Just add a 2S LiPo battery with IC5 plug and a compatible charger and you're ready to ride. Please note: IC3 to IC5 adapters will not fit inside of the Promoto-MX. A LiPo Battery with IC5 or EC5 connector is required.

 


 
In The Box
  • (1) Losi Promoto-MX Pro Circuit RTR Motorcycle
  • (1) Spektrum Smart DX3PM Transmitter
  • (4) AA Transmitter Batteries
  • (1) Spektrum 5000mAh 2S 7.4V Smart G2 50C LiPo Battery with IC5 Connector
  • (1) Spektrum Smart S120 USB-C Charger, 1x20W
  • (1) Bike Stand
  • (1) Starting Stand
  • (1) 1/4 Promoto-MX Motorcycle RTR Product Manual
  • (1) Quick Start Guide
  • Chain Lube
  • Tuning Parts
  • Fork and Shock Tools
 
Needed to Complete
  • Nothing! Everything you need to start ripping the Promoto-MX RTR is included in the box!
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 54200198252

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4.9 ★★★★★
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Zachary Cochran
Lowell, US
★★★★★ 5
Gives an actual answer—without feeling cliché. Terrific book.
How People Change is a powerful book. It spells out in simple (not simplistic) terms how people change. It looks at Scripture and quotes from it heavily to make its points. At the center of the process of change is Jesus and the gospel. When we accept what Jesus has done for us and look at him, and continue to look at him throughout our lives instead of just at the moment of our conversion, something monumental shifts. But the shift is so subtle, but so real. I feel like I understand what life with Christ is supposed to look like now. A lot of books promise to give you the secrets to this or that. This book does give you the answer to how people change: it involves repentance no matter life's circumstances PLUS faith in who God is and living out of our new identity as his children. This is one of those books I plan to buy and give to my friends. I want more people to read this to understand what I now understand. This is truly a five star book. It's not a quick read, but wow is it worth it. If you don't read any other book this year, seriously, consider this one. In fact, go ahead, check out the sample of the book right now—if you don't end up buying and reading it, you will be missing out on grace from God in a big way.
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Reviewed in the United States on April 19, 2015
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david h.
Lexington, US
★★★★★ 5
recommend this seller
Format: Paperback
great product, great seller
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Reviewed in the United States on March 4, 2026
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fitzalling
Cuba, US
★★★★★ 5
Globalization greatly increases leverage over opponents
I'm trying to learn more about China. This book was referenced in a book I read by U.S. General Spalding entitled "War Without Rules." The book was written by two Chinese PLA colonels and published in 1999 so it's about a quarter century old. According to General Spalding the book has been read and considered within the U.S. military. I have the paperback and it's 193 pages, not including a short afterword and some information on the authors' backgrounds. It reads fairly well although I did encounter a few places where I wasn't entirely sure what the book was trying to say. I don't know if this was due to translation challenges or it was just me. I got through the book fairly quickly. My main takeaway was that globalization has offers a potential opponent many more levers to influence the actions of others than simply resorting to kinetic (bombs and bullets) warfare. Economic warfare is certainly possible and in the colonels' view has been resorted to by the West against Asian targets. They view George Soros as a financial terrorist who wreaked havoc on Asian economies in 1998. They describe Soros as a soldier in the wars of tomorrow. Page 191. The inspiration for the book was the First Gulf War. The lesson that the colonels drew from this war was that it was inadvisable to fight the U.S. in a straight-up kinetic war. Finding other ways to fight the U.S. was mandatory. As I write this in January 2024 I wonder if the Chinese military will follow the colonels or if they will resort to traditional kinetic means of fighting if their leadership decides to take Taiwan. On page 120 they describe the new model of warfare as combining the battlefield and non-battlefield exemplified by Schwarzkopf and Soros and Bin Laden and some Chinese that I don't recognize. As they say on page 120 "This then is our real hand of cards." The book also cites a number of Chinese theorists on war, which I think I useful. I've read fairly widely, but my reading has been focused in the West. Also, the authors look at international bodies and how China might use them against the U.S. On page 164 the book argues that warfare is changing from "bloody massacre" and finding expression in "information warfare, financial warfare, and trade warfare". Look at the U.S. response to Russia's invasion of Ukraine. The colonels' thoughts are worthy of consideration. On page 110 the book observes "continuous coverage by the modern media which very much strengthens the effects of terrorism." If the topic interests you, I recommend the book. The book may be 25 years old, but its message is timely.
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Reviewed in the United States on January 9, 2024
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Albert
Lowell, US
★★★★★ 4
Intriguing Challenges and Overblown Rhetoric
This is a useful book to read. The principles of warfare advocated by Sun Tzu say that you must know both yourself and your enemy. This book shows that modern American society is known by the Chinese military. As an exercise in cultural self-understanding alone, reading it pays dividends. However, the topic is strategy. The words used can be relatively confusing at times, not quite embodying the meaning given to them by the authors. Unlimited...but within limits. Unrestricted...but following rules. It can be a bit of a struggle to follow their train of thought and understand their meaning (especially with the writing style, which lacks clarity or organization). Despite this I think it is worth struggling with, and especially with a broad overview of some of the argument to assist. Such a board overview follows. The main point: the United States is prone to think in a manner which intrinsically restricts the conduct of warfare to only a formal military domain; thus it abstracts military action from its location in social domains (politics, economy, information, etc). This fits rather well. We like things to be formulas or mechanistic. We also like to abstract them away into separate ("rigidly distinct") boxes which have no interaction. And so, the military is responsible for military problems and better stay far from anything approaching politics! However, as the authors reveal, this leads to an inability to conduct grander strategy in warfare. So instead: "unrestricted" warfare is to have strategy incorporate considerations (and interactions) within various domains, not only the military domain. Basically it is a rejection of the post-Westphalian concept of the nation-state as the supreme (and exclusive) kind of agent in strategy. This is good. The post-Westphalian idea of the nation-state may be useful in certain contexts and for certain purposes, but it is NOT the comprehensive reality of the universe. To treat it as such is to be blind to much of reality, and to live in a fantasy world. Does North Korea really care that it is "unrecognized" as a nation by us? Nope. Because the nation-state idea simply doesn't describe the order in which NK exists, so much as it describes the order in which Germany exists. This is all well and good. But is it truly revolutionary or new? I don't think so. Clausewitz himself writes that there is no military situation abstracted from the political situation, and politics (in this sense) involves much more than just inter-governmental relations. Rather, I think that we can treat this as a corrective against modern American oversimplifications and reductions, and thus as a "return" to older concepts of strategy and statesmanship. Indeed, they even imitate and follow Clausewitz's guidance on method for determining a theory of warfare which is inductive/a posteriori, rather than deductive/a priori. Unfortunately, the one "modern" example of a war they have to analyze is the Gulf War, and so they relentlessly analyze it alone, perhaps leading to imbalance. And here is where the rhetoric is overblown. This is no "master plan" to destroy America (false advertising). It's not even really new concepts. Rather, it is a (very) forceful reminder against the false (and harmful) modernist sentiments that prevail in America's mode of conducting warfare. In reference to false understandings, the authors actually accuse Americans of "touching the elephant" - an allusion to the tale of "blind men and the elephant" (although this allusion is not made clear in the text, and so is confusing if you have not heard of the tale). It is a parable about believing one has the absolute truth, while only having a limited perspective. Perhaps the authors also touch the elephant in a few ways (bias for helicopters without empirical evidence, a near-religious adoration of the golden ratio, etc.). There's a final point of balance that is perhaps needed. It is easy to either dismiss the Chinese critiques of American society ("we don't worship tech") or take them too seriously ("tech is evil"). Either reaction is problematic. Instead we need to understand that just as in some other areas, there is a rhetorical/political purpose at play. America is being made fun of (which means that the critiques are both based in reality, but also somewhat biased for the sake of local humor). Technology is not evil, and technology is not God. So we need to learn to avoid seeing technological advancement as a replacement for people (this is the error the authors would like to point out). This doesn't mean avoiding technological advancement. There are many lessons to be learned from this book. I'd advise it for all military officers to read. However, I also would advise to temper the expectations and reframe the reader's conception of what the book is: it is an exercise in recovery of some older strategic concepts, not a revolutionary approach to destroying the United States. Get past and ignore the rhetoric and advertising, and take the lessons where they make valid points about where we can be short-sighted in our mindset. But don't discount those lessons because of the wild rhetoric and advertising which surround them. Doing this, you will profit.
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Reviewed in the United States on September 1, 2022
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CliffB
Bozeman, US
★★★★★ 5
China’s Global Strategic Approach.
Provides an excellent understanding of China’s strategy approach — which should be occurs by now, but isn’t. Its style is probably to Asian to be appreciated by most Americans — who have never studied the classic Asian way of war — and never been to war in Asia. If interested in this subject, start with Sun Tzu, and try to think like about strategy the way the Chinese understand it.
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Reviewed in the United States on February 3, 2026

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