Dualtron Storm New EY4 vs InMotion RS - Two Hyper-Scooters Walk Into a Street... Which One Walks Out?

Fast Answer for Busy Riders ⚡ (TL;DR)

The InMotion RS edges out the Dualtron Storm New EY4 as the more rounded, future-proof hyper-scooter, mainly thanks to its smoother power delivery, more comfortable suspension, better weather protection, and stronger value for money. It feels less nervous at speed, more forgiving on bad tarmac, and more versatile with that height-adjustable chassis.

The Dualtron Storm New EY4 still makes sense if you absolutely want a removable battery, crave that classic Dualtron feel, and value the established parts ecosystem and community more than outright refinement. It's the better pick for apartment riders who can't charge a 50-plus-kg chassis indoors.

If you want the more modern, polished riding experience, go RS. If you want a known quantity with a swappable battery and a very "mechanical" character, go Storm. Keep reading - the devil, and the decision, are in the details.

Hyper-scooters like the Dualtron Storm New EY4 and the InMotion RS live at that strange intersection between "toy" and "please-don't-tell-my-insurer". They cost like small motorbikes, pull harder than most 125 cc machines off the line, and weigh as much as a very upset labrador in body armour.

I've spent proper time on both: long suburban commutes, night rides, dodgy cycle lanes, and the occasional "this hill looks fun" detour. On paper they're close cousins - big batteries, dual motors, silly speeds. On the road, they have very different personalities and very different annoyances.

Think of the Storm as the traditionalist: industrial, dense, and a bit stubborn, built around that removable battery and the old-school Dualtron riding feel. The RS is the pretender from the EUC world: more refined, more adjustable, more "thought-through", but still not exactly delicate.

Let's break down where each one shines - and where each one quietly hopes you won't look too closely.

Who Are These For, and Why Compare Them?

Both scooters sit firmly in the hyper-scooter bracket: serious money, serious performance, and absolutely not for first-time riders. They're designed to replace cars or motorbikes for people who actually enjoy riding, not just commuting.

They target the same kind of rider: experienced, speed-tolerant, happy to deal with a heavy chassis, and expecting to cruise at city traffic speeds or better. Longish daily commutes, weekend group rides, and "I'll just pop to the next town for fun" trips are their natural environment.

Price-wise they're neighbours too, with the RS generally undercutting the Storm while offering a bit more battery and tech. Both are dual-motor, 72 V machines with big decks, big tyres, and braking systems that finally match the speed they're capable of. That's why this comparison matters: if you're shopping one of them, you're almost certainly eyeballing the other.

Design & Build Quality

Pick up (or rather, attempt to pick up) the Dualtron Storm New EY4 and it feels like a block of milled metal. The design is classic Dualtron: sharp edges, thick stem, exposed hardware, and a heavy industrial aesthetic that doesn't care if you think it's pretty. The removable battery deck looks like a weapons crate, and in person the RGB lighting is more "gaming PC on wheels" than subtle elegance.

The RS goes in a different direction. The C-shaped suspension arms, angular bodywork and paint finish give it more of a motorsport vibe. It looks like someone crossed a downhill bike with a rally car. The chassis feels solid and dense, but the visual impression is a bit more modern and intentional, less "assembled from parts bin" and more "designed as a system".

In the hands, the Storm's metalwork and clamps feel tough but a bit old-school: lots of bolts, chunky collars, and that typical need to keep an eye on stem hardware over time. The RS's build feels slightly more integrated, though not flawless - early fenders and alignment issues have been reported - but when you're actually riding hard, both give off that reassuring "I'm not going to snap in half today" sensation.

Design philosophy is clear: Dualtron prioritises modularity and legacy (removable battery, familiar layout), while InMotion prioritises adjustability and chassis dynamics. If you like the look of brutally functional hardware, the Storm will appeal. If you want something that looks like a prototype from a sci-fi movie, the RS gets the nod.

Ride Comfort & Handling

This is where the two start to diverge meaningfully.

The Storm's rubber cartridge suspension is very much a "Dualtron thing": firm, relatively short travel, and more about stability than float. On smooth tarmac and higher speeds, it feels planted and precise, like a heavy sports car on stiff coilovers. Hit a patchwork of broken city asphalt and you'll be reminded that those cartridges don't exactly pamper your knees. You can swap stiffness levels, but the basic character never becomes plush.

The RS, with its hydraulic, multi-stage adjustable suspension, is simply more forgiving. Dial it softer and you get a noticeably more comfortable ride over cobblestones, cracked bike lanes, and the usual urban abuse. Dial it firmer and it tightens up for fast runs without turning into a pogo stick. After several kilometres of bad pavement, my legs and back were still suspiciously calm - on the Storm, I felt more of the chatter and had to actively use my legs as auxiliary suspension.

Handling-wise, both have wide bars and long decks that give you leverage and confidence. The Storm, especially with its updated wider handlebars and reinforced stem, is far better than older Dualtrons at suppressing speed wobbles, but it still has that slightly "dense front" feel: it wants a firm hand and benefits hugely from a steering damper. The RS feels more naturally neutral; the steering is calmer, and with the deck in a lower position it carves long bends with less effort and fewer micro-corrections.

If your typical day involves mostly smooth roads and you enjoy that connected, sporty feel, the Storm is fine. If you live somewhere with creative road maintenance and long distances, the RS's suspension and chassis adjustability make it the more comfortable and less fatiguing choice.

Performance

Both scooters are firmly in the "grin or regret" acceleration category. Throttle too hard, too early, and you'll learn why foot placement matters.

The Storm hits like an old-school Dualtron: the torque arrives abruptly, especially in higher power modes. That square-wave controller character means the first part of the throttle can feel a bit twitchy at low speeds; gentle car-park manoeuvres need concentration. Once rolling, it surges forward aggressively and keeps pulling hard, especially through that mid-speed band where many smaller scooters start to fade. Hills? It treats them as a suggestion rather than an obstacle.

The RS, on the other hand, feels more refined in how it delivers its violence. Those sine-wave controllers give the throttle a more progressive, predictable feel. You still get that "rocket launch" effect if you want it, but it's easier to modulate, especially in tighter urban riding or when rolling on from low speeds. The top-end potential of the RS is also a notch higher; when both are unleashed on private ground, the RS keeps breathing where the Storm is already approaching its comfort zone.

Braking is strong on both. The Storm's hydraulic discs, helped by motor braking, scrub off speed quickly, though you can occasionally feel the rear unweight slightly on very hard stops, especially on uneven surfaces. The RS's brakes feel equally powerful, but the overall chassis stability - plus the planted stance when set low - makes emergency stops feel a little more controlled to the rider. You're still very aware of the mass, but your brain isn't screaming quite as loudly.

For pure "numbers flexing" they're both overkill for public roads. In terms of how usable that performance feels day to day, the RS has the edge: it's more linear, calmer at speed, and gives you more confidence to actually use the power you're paying for.

Battery & Range

Both pack big batteries and, unsurprisingly, deliver big range - as long as you're not riding everywhere in full lunatic mode.

The Storm's battery is slightly smaller on paper, but still huge by normal scooter standards. In real-world mixed riding - reasonable traffic speeds with occasional bursts of "let's see what happens" - you're looking at enough range for a long return commute or a proper weekend blast without charging anxiety. Push it constantly in the highest settings and you'll noticeably shorten that, but it still outlasts most riders' legs.

The RS carries a bit more capacity and is also relatively efficient for its size. In similar "ride like a normal fast human" conditions, getting further on a charge is realistic, and if you tone it down you can creep towards very long distances that start to make public transport feel unnecessary. The dual-charging capability means you can actually refill that big pack in a workable daytime window, as long as you have access to two outlets and chargers.

The key philosophical difference is charging logistics. The Storm's removable battery is a huge practical win if you can't bring a heavy chassis indoors. Lock the frame downstairs, lug the (still heavy) battery up, and charge in your flat - no extension leads hung out of windows. The RS asks for ground-floor storage or a garage; you're bringing the whole beast to the plug, not just the pack.

If maximum real-world range and faster charging are your priority, the RS nudges ahead. If your main bottleneck is "I can't get 55 kg of metal up my stairs", the Storm's removable pack can be the deciding feature.

Portability & Practicality

Let's be honest: neither of these scooters is portable in any sensible meaning of the word. You don't "carry" them; you wrestle them.

The Storm is marginally lighter on paper, but in the real world both feel firmly in the "two-person lift is nice" category. The folding mechanisms on both are built for rigidity first, convenience second. Folding the Storm results in a fairly dense, short package; folding the bars helps with storage but doesn't magically transform it into something you'll slide under a café table.

The RS folds into a long, heavy plank with a stem. The transforming suspension gives you height options for riding, but does nothing for making it easier to carry. The side profile is big, and getting it into a small car boot is often a puzzle exercise, especially if you don't want to scratch the plastics or your bumper.

Practicality is more about how they slot into your life. The Storm's trump card is again that removable battery, making it more apartment-friendly if you have secure ground-level parking. The RS answers with better all-weather capability and greater comfort over nasty surfaces, which matters if you're riding daily in varied conditions.

Neither is suitable for frequent multimodal commuting with public transport. They're "from home to destination and back" vehicles, not "fold at every junction" toys. Choose based on where you can park and where your power sockets live.

Safety

Safety is where the gap between spec sheet and feeling really shows, and the RS does a slightly better job translating numbers into confidence.

Both scooters have strong hydraulic brakes, bright headlights that actually light up the road, and full indicator setups. On dark country lanes, both let you see potholes rather than guess their location. Side visibility is decent in both cases, with extra deck or stem lighting making you stand out to car traffic in low light.

The Storm has made real strides over older Dualtrons: wider bars, a beefier stem, better lighting, and improved water resistance on the body and display all help. At pace it can feel nicely locked in, especially with decent tyres and, ideally, a steering damper added. But the firm suspension and slightly more abrupt throttle delivery mean you need to stay switched on, particularly on rough surfaces or in wet conditions.

The RS benefits from its geometry and suspension tuning: set low, with suspension adjusted sensibly, it stays calmer at high speed with fewer hints of wobble. The higher weather protection rating for the electronics means heavy showers are less nerve-wracking, and the overall braking-and-grip package feels slightly more cohesive when the road gets sketchy.

Both can be ridden safely by an experienced rider with proper gear. The RS just makes safety feel more baked-in, whereas on the Storm you're more conscious of working around its firmer, more old-school ride characteristics.

Community Feedback

Price & Value

Both sit firmly in the "this is a serious purchase" bracket, but the RS generally comes in cheaper while offering a larger battery, more advanced suspension, and higher water resistance. On a pure "what you get for each euro" basis, the RS offers slightly better value, especially if you plan to exploit its comfort and range regularly.

The Storm, meanwhile, leans harder on brand heritage, the removable pack, and the enormous Dualtron ecosystem of parts and community knowledge. You are paying a bit of a "Dualtron tax", and you don't quite get the same level of modern ride refinement in return, but you do get good resale prospects and one of the most widely supported platforms in the hyper-scooter world.

If you view either of these as a car alternative rather than a toy, both can make financial sense over years of use. But if we strip away emotion and look at hardware per euro, the RS comes out slightly ahead.

Service & Parts Availability

Here the Storm plays its strongest card. Dualtron has been around for a long time, and it shows. In Europe you can find brake pads, cartridges, stems, even obscure fasteners from multiple resellers. Tutorials, upgrade guides and troubleshooting threads are everywhere; there's almost always someone who has already solved your particular rattle or error code.

InMotion has a solid and growing presence, with a decent dealer network and a good reputation for support, largely thanks to their electric unicycle legacy. Parts availability for the RS is reasonable, but not quite as effortlessly ubiquitous as Dualtron's yet. The more integrated design can also make some repairs a bit more involved if you are used to the bolt-on/off simplicity of older scooters.

If you are the kind of rider who modulates their scooters with new parts, experiments with tyres and braking setups, and wants a guaranteed supply chain for years, the Storm's ecosystem is a safer bet. If you're happy with mostly stock hardware and rely on official dealers, the RS is fine and improving with time.

Pros & Cons Summary

Parameters Comparison

Final Verdict - Which Should You Choose?

Both the Dualtron Storm New EY4 and the InMotion RS are wildly capable machines that will happily replace a car for many riders. They sit in the same ecosystem of "too fast for common sense", but they give you different trade-offs and different headaches.

If you live in a flat without ground-floor charging, the Storm's removable battery is more than a convenience - it's the difference between "usable" and "what was I thinking?". If you value the giant Dualtron community, easy access to parts and mods, and you like that taut, connected, slightly unforgiving ride, the Storm still makes sense as a functional, if not particularly modern-feeling, hyper-scooter.

The RS, though, feels like the more complete package for most riders. It rides smoother, copes better with bad roads, deals with rain more confidently, delivers its power more cleanly, and gives you more real-world range and comfort for slightly less money. You feel less like you're managing the scooter and more like you're just riding it.

If I had to pick one to live with every day for long, mixed-weather commutes and weekend fun, I'd take the InMotion RS. The Dualtron Storm New EY4 isn't a bad choice - it's just starting to feel a bit like yesterday's idea of a hyper-scooter, while the RS feels much closer to where the category is going.

Numbers Freaks Corner

These metrics look at how efficiently each scooter turns money, weight, and battery size into speed, range and practicality. Lower "per Wh" and "per km" values mean you're getting more performance or distance out of each euro or kilogram. Efficiency (Wh/km) tells you how thirsty the scooter is for energy over distance. Power-to-speed and weight-to-power show how much punch you get for the motor size, while average charging speed indicates how quickly you can realistically get back on the road after a deep discharge.

Author's Category Battle

Overall Winner Declaration

In the Numbers Freaks Corner, the DUALTRON Storm New EY4 scores 3 points against the INMOTION RS's 7. In the Author's Category Battle, the DUALTRON Storm New EY4 gets 24 ✅ versus 28 ✅ for INMOTION RS (with a few ties sprinkled in).

Totals: DUALTRON Storm New EY4 scores 27, INMOTION RS scores 35.

Based on the scoring, the INMOTION RS is our overall winner. Between these two heavy hitters, the InMotion RS simply feels like the more grown-up, better-rounded machine to live with: it rides smoother, shrugs off bad weather, and lets you enjoy the performance without constantly negotiating with the chassis. The Dualtron Storm New EY4 still has its charms - that removable battery and unmistakable Dualtron punch - but it feels a bit more like you're adapting to the scooter rather than the scooter adapting to you. If you want the most complete hyper-scooter experience you can reasonably use every day, the RS is the one that will quietly win more commutes and more weekends. The Storm will still make you smile, but the RS will make you smile more often, and with fewer compromises attached.

That's our verdict when we try to stay objective – but hey, riding is mostly about emotions anyway, so pick the one that will make you look forward to your commute every single day.