Losi Promoto MX vs Promoto SM – Same Platform, Two Riding Styles

When Losi announced the Promoto series, few believed an RC motorcycle could actually feel real. Now, with the MX and SM models both out, that disbelief has turned into obsession — because these bikes don’t just look scale, they ride like it.

1. The Promoto Platform: A Revolution in RC Motorcycles

The Losi Promoto isn’t the first RC motorcycle ever made — but it’s the first one that truly works like a real bike. Both the MX and SM models share an identical electronic and mechanical foundation designed from the ground up to replicate full-size handling. At the heart of this platform lies Losi’s MS6X control system and a 2700Kv brushless motor spinning a precision-balanced flywheel at over 22,000 RPM. This gyroscopic force keeps the bike stable, allowing it to lean naturally into corners, pop wheelies, and recover from bumps with real-world grace.

Both versions also share a chain-driven drivetrain and a fully tunable suspension setup. The rear shock uses a rising-rate linkage geometry — a concept borrowed straight from full-size motocross bikes — while the front fork uses silicone dampening oil that can be adjusted for terrain type. The result is an RC motorcycle that feels planted, agile, and alive under throttle.

2. Promoto MX: Built for the Dirt

The Promoto MX was made for those who dream of kicking up dirt and carving berms. It comes equipped with knobby off-road tires, long-travel suspension, and protective bodywork designed to shrug off dust, roost, and minor tumbles. On a rough track or open field, the MX version feels every bit like a scaled-down motocross racer — balanced, grippy, and incredibly satisfying to slide through corners.

Many early owners describe it as the most fun RC release of the decade. One rider put it best: “It’s still just as fun six months later as the day I brought it home!” Another said, “It’s the best RC 2023 — hands down!” Those reviews sum up the appeal perfectly: it’s fast, dramatic, and endlessly addictive.

3. Promoto SM: Precision on the Pavement

While the MX tackles the dirt, the Promoto SM (Supermoto) is tuned for asphalt and smooth surfaces. It shares the same internal architecture but trades knobby tires for street slicks and recalibrated suspension for sharper turn-in and body control. The result? A bike that leans predictably and maintains stability even in long, sweeping corners — ideal for parking-lot racing or scaled-down street circuits.

The SM is all about rhythm and flow. Where the MX encourages wild wheelies and slides, the SM rewards smooth throttle control and racing lines. It’s not just a re-skin — it’s a refined driving style built on the same DNA.

4. Shared DNA: Same Power System, Same Battery

Despite their differences, both bikes are powered by the exact same electronics and battery system. That means any 2S LiPo battery compatible with the Promoto MX will drop directly into the Promoto SM, no mods needed. This shared design makes upgrades easy and universal across both versions.

For the best performance, we recommend switching to high-discharge CNHL packs designed for RC competition. These deliver consistent power for extended sessions and help the Promoto platform reach its full potential.

Check out our complete list of compatible options here: Losi Promoto Battery Collection – CNHL 2S Racing Series

5. Real-World Impressions from the RC Community

Owners from around the world have praised the Promoto series for its engineering and realism. Comments like “It’s an animal if you keep it within its limits” and “The handling and suspension geometry feel like a real dirt bike” appear again and again. The only common critique? Battery life — which is exactly where CNHL packs step in, offering up to 30% longer runtime with higher voltage stability under load.

6. Recommended CNHL Battery Upgrades

Because the Losi Promoto MX and Promoto SM use a very tight motorcycle-style battery compartment, battery fitment is not just about voltage and capacity. Case shape, wire exit direction, and connector clearance all matter. Based on current fitment checks, the following CNHL Racing Series 2S hard-case packs are the recommended options for riders who want stronger runtime and reliable 2S power delivery.

Important connector note: the batteries below come with a T Plug / Deans-style connector, while the Losi Promoto platform is typically designed around EC5 / IC5 connectors. They are not direct plug-and-play out of the box. Riders will need to prepare a suitable T Plug to EC5 / IC5 adapter or perform a proper connector conversion before use.

• CNHL Racing Series 5200mAh 7.4V 2S 100C Hard Case LiPo Battery with T/Dean Plug – The lightest option in this fitment-focused group, suitable for riders who want a more responsive feel and easier weight control.
• CNHL Racing Series 6200mAh 7.4V 2S 100C Hard Case LiPo Battery with T/Dean Plug – A balanced upgrade choice for everyday Promoto riding, offering a good mix of runtime, punch, and manageable weight.
• CNHL Racing Series 6600mAh 7.4V 2S 100C Hard Case LiPo Battery with T/Dean Plug – A strong middle-to-high capacity option for longer sessions on dirt, pavement, or mixed terrain.
• CNHL Racing Series 8000mAh 7.4V 2S 100C Hard Case LiPo Battery with T/Dean Plug – The highest-capacity option currently recommended for riders who prioritize maximum runtime. Because of the added weight, always check bike balance and battery cover clearance after installation.

For the latest compatible options, visit the CNHL Losi Promoto Battery Collection.

7. Conclusion: Two Styles, One Breakthrough

The Losi Promoto series is more than a pair of RC bikes — it’s a proof of concept that scaled realism can work. The MX version channels the spirit of off-road adrenaline, while the SM captures the precision of street racing. Whichever direction you lean, both share the same heartbeat — and both come alive with the right battery upgrade.

Discover the full lineup of performance packs for both models at: CNHL Promoto Battery Collection.

FAQ

• Are Promoto MX and Promoto SM using the same chassis?
  Yes. Both models share the same core Promoto platform, including the same battery compartment layout. The main differences are riding style, tires, suspension setup, and body details.
• What battery fits the Losi Promoto bikes?
  The Promoto platform is designed for 2S LiPo power, but not every 2S battery will fit. The battery bay is narrow, so dimensions, hard-case shape, wire exit direction, and connector clearance must all be checked. The four CNHL Racing Series 2S packs listed above are selected because they can physically fit the Promoto battery area and allow the wires to route out properly.
• Are these CNHL batteries plug-and-play with the Losi Promoto?
  No. The current recommended CNHL packs use a T Plug / Deans-style connector, while the Losi Promoto MX and SM are typically set up for EC5 / IC5 connectors. You will need a suitable T Plug to EC5 / IC5 adapter or a proper connector conversion before running the bike.
• Can I run 3S or higher voltage?
  No. The Losi Promoto power system is designed for 2S operation. Running 3S or higher voltage may damage the ESC, motor, or MS6X control system.
• Which CNHL battery gives the longest runtime?
  Among the currently recommended options, the CNHL Racing Series 8000mAh 7.4V 2S 100C Hard Case LiPo Battery offers the highest capacity and the longest potential runtime. However, it may also add more weight, so riders should check bike balance and battery cover clearance carefully.
• Will the battery cover close normally?
  The listed packs were chosen because their size and wire layout can work with the Promoto battery compartment. Final fitment may still depend on your adapter, wire position, and installation method. Never force the battery cover closed if the wires or adapter are being pinched.
• Which version is better for beginners?
  The Promoto MX is generally more forgiving on grass, dirt, and loose surfaces, while the Promoto SM works best on smooth pavement where precise throttle and lean control matter more.