GOTRAX GMAX Ultra vs HIBOY KS4 Pro - Which "Budget Commuter Hero" Is Actually Worth Your Money?

GOTRAX GMAX Ultra 🏆 Winner
GOTRAX

GMAX Ultra

763 € View full specs →
VS
HIBOY KS4 Pro
HIBOY

KS4 Pro

355 € View full specs →
Parameter GOTRAX GMAX Ultra HIBOY KS4 Pro
Price 763 € 355 €
🏎 Top Speed 32 km/h 30 km/h
🔋 Range 72 km 30 km
Weight 20.9 kg 17.5 kg
Power 500 W 750 W
🔌 Voltage 36 V 36 V
🔋 Battery 630 Wh 417 Wh
Wheel Size 10 " 10 "
👤 Max Load 100 kg 100 kg
Speed Comparison

Fast Answer for Busy Riders ⚡ (TL;DR)

The GOTRAX GMAX Ultra is the stronger overall commuter scooter here, mainly because of its far superior real-world range, higher-quality battery pack and more confidence-inspiring ride on imperfect city streets. It feels closer to a "proper vehicle" than a disposable gadget, even if it's not exactly thrilling. The HIBOY KS4 Pro makes a lot of noise on paper with its punchy motor, suspension and bargain price, but its shorter range and harsher solid tyres make it more of a short-hop tool than a true daily workhorse.

Choose the GMAX Ultra if you want a solid, long-range scooter that can replace a good chunk of your public transport or car use. Choose the KS4 Pro if your rides are relatively short, you love the idea of never fixing a flat, and you want to spend as little as possible up front. If you care about long-term ownership and real commuting peace of mind, keep reading-the differences become very clear once you dive in.

Stick around for the full breakdown; there are some important trade-offs hiding behind the spec sheets that you really should see before hitting "buy".

Electric scooters in this price band are no longer toys; for many riders they're the daily commute, the grocery run and the "I'm not sitting in that traffic again" ticket to sanity. The GOTRAX GMAX Ultra and HIBOY KS4 Pro both promise exactly that: sensible speed, practical range and no-fuss ownership, wrapped in relatively compact packages.

I've put plenty of kilometres on both-through bike lanes, broken asphalt, wet tram tracks and the usual city chaos. On paper they look like cousins: similar top speeds, similar weight class, same basic commuter mission. In reality, they solve the commuting problem in very different ways, and those differences matter a lot after your first week of living with them.

Think of the GMAX Ultra as the slightly serious, range-obsessed colleague who always shows up, and the KS4 Pro as the cheekier, cheaper mate who's fun at first but occasionally cuts corners. One wants to replace your bus pass, the other wants to make your last few kilometres less annoying. Let's unpack which approach actually works best for you.

Who Are These For, and Why Compare Them?

GOTRAX GMAX UltraHIBOY KS4 Pro

Both scooters sit in what I'd call the "grown-up commuter" bracket: single-motor, around the legal-limit speed for most European cycle paths, and just heavy enough that carrying them upstairs feels like exercise rather than transport. They are aimed squarely at riders who want everyday reliability, not stunt performance.

The GMAX Ultra targets riders whose daily return trip is more than just a quick dash across town: think long-ish commutes, multiple errands, or delivery riders doing several hours per shift. Its headline act is endurance and a battery built from well-known LG cells-more touring scooter than toy.

The KS4 Pro, on the other hand, plays the value card hard. It undercuts most competitors on price while shouting about a stronger motor, rear suspension and maintenance-free tyres. It's clearly gunning for first-time buyers and budget-conscious commuters who want "good enough" performance without the usual flat-tyre drama.

They compete because many shoppers end up torn between "spend more for battery quality and range" (GMAX) and "save money now, deal with compromises later" (KS4 Pro). Same job description, very different philosophies.

Design & Build Quality

Specs Comparison

Pick up the GMAX Ultra and it immediately feels like a step up from cheap rental clones: thick stem, wide deck, mostly internal cabling, and a finish that wouldn't embarrass you in an office lobby. The integrated stem display looks tidy and modern, and the built-in cable lock in the handlebar column is one of those "why don't more people do this?" touches. It's not premium in the boutique sense, but it definitely feels like a thought-out product rather than a parts-bin special.

The KS4 Pro also looks the part at first glance: matte black frame, red accents, a large central display and reasonably clean cable routing. It doesn't scream "budget" the way its price suggests. Up close though, you start to notice a few shortcuts: hardware that benefits from a thorough tighten and thread-locking early on, and plastic bits that feel a bit more cost-conscious. Nothing catastrophic, but you are reminded where Hiboy chose to save money.

Structurally, both frames feel solid enough when riding, but the GMAX Ultra comes across as more "finished" as a package. The folding latch on the GOTRAX engages with a reassuring clunk and has less of that microscopic stem play that can drive you mad after a few hundred kilometres. The KS4's latch works and is quick, but it feels more in line with its price tag. If you're picky about long-term creaks and rattles, the GMAX Ultra has the edge.

Ride Comfort & Handling

This is where the design choices really diverge. The GMAX Ultra runs on large pneumatic tyres and no mechanical suspension. The KS4 Pro reverses the equation: solid honeycomb rubber with a rear spring.

On decent tarmac, both are fine. But cities rarely offer "decent tarmac" for more than fifty metres at a time. Hit cracked pavement, expansion joints or the odd pothole and the difference becomes obvious. The GMAX's big air-filled tyres soak up the chatter surprisingly well; you still feel the road, but your knees don't stage a protest after a few kilometres. It has that slightly heavy, planted feel that encourages relaxed cruising rather than nervous micro-adjustments.

The KS4 Pro tries to fake pneumatic comfort with its honeycomb pattern and rear suspension. It does take the edge off bigger hits at the back, but there's no getting around the fact that solid rubber up front transmits a lot more vibration into your hands. On smooth paths it's pleasant; on old cobbles or patchwork tarmac, the ride becomes busy and a bit fatiguing. You learn to soften your knees and live with it, but if your city specialises in medieval street "character", you'll notice the difference at the end of the week.

In corners, both are stable enough at their modest top speeds, but the GMAX's longer wheelbase and weight low in the deck give it a more composed, adult feel. The KS4 Pro feels shorter and more nimble; that can be fun weaving through slow cyclists, but combined with the more jittery front end over bumps, it never feels quite as calm as the GOTRAX when the surface gets messy.

Performance

On paper, the KS4 Pro wins the spec-sheet war: a noticeably stronger rear motor that leaps off the line more eagerly and holds its pace up moderate inclines better. In practice, that extra shove is real-you'll leave the GMAX Ultra behind in the first few metres at the lights, and on hillier routes you'll appreciate not having to baby it as much. The Hiboy feels "lively for a commuter", which is fun in city traffic.

The GMAX Ultra is more modest. Its rear motor gets you up to its capped speed at a sensible pace, but there's no drama, no surprise surge. It's tuned for predictability rather than excitement. On flat ground it holds its cruise comfortably; on steeper sections it will slow down sooner than the Hiboy, especially with heavier riders. If you like a scooter to feel eager every time you tap the throttle, the GMAX will feel a bit conservative.

Braking is broadly similar in architecture-disc brake at the rear, electronic assistance at the front-but feel differs. The GMAX Ultra's rear disc plus front e-brake arrangement gives a progressive, stable stop that feels quite confidence-inspiring even on wet surfaces, helped by its pneumatic front tyre actually gripping the tarmac. The KS4 Pro's system has plenty of bite, but with less front-end mechanical grip from the solid tyre, hard stops can feel a bit skittish if you're ham-fisted with the lever. Set up properly, both will haul you down from speed, but the GOTRAX feels more grown-up and predictable when you really need it.

Battery & Range

If there's one category where the GMAX Ultra completely changes the conversation, it's range. It carries a significantly larger battery built from LG cells, and it shows. In real-world mixed riding-urban speeds, some hills, an average-weight rider-it can comfortably cover commutes that the KS4 Pro simply can't touch without reaching for the charger. You can do a typical return-to-work run and detour via the shop without anxiously eyeing the battery bars, and many riders get away with charging only a couple of times per week.

The KS4 Pro's pack is respectable for its price, but clearly a size down. In gentle Eco mode on flat ground, you can stretch it, but ride it like most people do-full speed where allowed, some hills, stop-start traffic-and it becomes a one- or two-trip scooter rather than an all-day mule. For short city hops it's perfectly serviceable; for longer commutes, you'll start planning your life around charging a bit more than you'd like.

Charging times are similar relative to their sizes: both are overnight-or-office-day affairs if you run them low. However, because the GMAX Ultra's tank is so much larger, you spend fewer total cycles at the wall over the life of the scooter. Combined with the higher-grade cells that hold voltage more consistently, it just feels less "fragile" as a long-term commuting partner. The KS4 Pro's battery will do the job, but it never gives the same relaxed "don't worry, it'll make it" vibe.

Portability & Practicality

Neither of these is what I'd call "light". The KS4 Pro is the easier of the two to lug, shaving a few kilos compared to the GMAX Ultra. If your routine involves stairs at each end or constantly lifting the scooter in and out of car boots and trains, that difference is noticeable. You can carry the Hiboy for a short stint without questioning your life choices; the GMAX feels more like an awkward gym session if you have to do it daily.

Folded, both are similar in footprint: a bit long, with 10-inch wheels and wide decks that aren't exactly dainty. The KS4's one-step fold and lighter weight makes it more pleasant for genuine multi-modal commuting-onto trains, under desks, up short staircases. The GMAX folds securely, but its bulk and mass make it better suited to "roll to the door, lift once into a car or hallway, done" scenarios.

In day-to-day use, though, the GMAX claws back points. The integrated cable lock in the stem is properly handy for quick café or shop stops. Its large clear deck and slightly more substantial kickstand make parking and loading bags feel less precarious. The KS4 Pro fights back with its app-based electronic lock and slightly smaller footprint, but if you mostly roll door-to-door, the GMAX's extra features feel more like real-world upgrades than gimmicks.

Safety

Safety is a combination of how quickly you can stop, how well you can see, how well you are seen, and how predictably the scooter behaves when something unexpected happens.

On visibility, both make a decent effort. The GMAX Ultra's headlight is better than the usual token candle you see on cheap scooters and is mounted in a useful position. Its brake-responsive rear light and reflectors along the frame give you a solid light signature in urban traffic. The KS4 Pro counters with a "three lights" approach: headlight, brake light and side lighting that does genuinely help at junctions. On a pitch-dark country lane neither is perfect, but for city and suburban commuting, both are serviceable-though I'd still add a better helmet light if you ride a lot at night.

Tyres are where things diverge. The GMAX Ultra's big pneumatic rubber gives vastly better grip on questionable surfaces: wet manhole covers, leaf mush, worn white paint. You simply have more contact and more compliance. The KS4 Pro's solid tyres will never puncture, which is great, but grip on slick or uneven surfaces is not in the same league. Combine that with its more abrupt feedback over bumps and you get a scooter that demands a bit more attention when the weather turns.

Both have dual braking systems and feel decently sorted once dialled in. Stability at their capped speeds is acceptable on both, but the GMAX's slightly wider stance and calmer steering make it feel more composed when you're mixing with traffic or dodging potholes at full tilt. In terms of sheer "I trust this thing not to surprise me", the GOTRAX is ahead.

Community Feedback

GOTRAX GMAX Ultra HIBOY KS4 Pro
What riders love:
  • Long real-world range for the money
  • Confidence in LG battery cells
  • Stable, planted ride on air tyres
  • Integrated cable lock convenience
  • Solid-feeling frame and folding joint
What riders love:
  • Strong punchy motor for price
  • Absolutely no flat-tyre worries
  • Rear suspension softens bigger hits
  • Attractive price and spec combo
  • Generally responsive customer support
What riders complain about:
  • No suspension on rough streets
  • Heavier than many expect to carry
  • Long-ish charging time for big battery
  • Occasional rear fender issues
  • App that feels half-baked
What riders complain about:
  • Harsh, buzzy ride on bad roads
  • Screws needing Loctite and checks
  • Real range well below marketing if ridden fast
  • Display hard to read in bright sun
  • App and brake setup needing fiddling

Price & Value

This is where the KS4 Pro loves to shout. It comes in at around half the sticker price of the GMAX Ultra, yet offers a stronger motor, rear suspension and app features. On a simple "euros versus spec sheet" comparison, the Hiboy looks like a fantastic deal, and for riders who just want a cheap, moderately quick scooter for short commutes, it can be.

The problem is that range and ride quality don't bend to marketing quite as easily. The GMAX Ultra asks for a lot more money up front, but you're buying into a much larger, higher-grade battery and a more confidence-inspiring ride on bad roads. Over a couple of years of real commuting-fewer deep discharges, fewer range anxieties, better traction in the wet-that extra cost starts to look more like an investment than an overindulgence.

If your budget simply won't stretch, the KS4 Pro gives you a usable, punchy scooter for surprisingly little. Just go in with realistic expectations: it's a great value gadget for short- to medium-length runs, not a long-range transport replacement. If you can afford the GMAX Ultra's price band and you actually plan to rely on the scooter daily, the GOTRAX offers better long-term value in kilometres and peace of mind.

Service & Parts Availability

Both brands are widely sold online in Europe, and both have reasonably active user communities sharing fixes and experience. GOTRAX has put some effort into making spare parts available through its own channels, and the G-series platform has been around long enough that there's a trail of guides, videos and third-party bits to keep one alive beyond warranty.

Hiboy, to its credit, has earned a reputation for relatively responsive customer service for a budget brand, often sending replacement parts quickly when something fails early. However, long-term parts provisioning can be patchier depending on region, and you're more reliant on Hiboy's own pipeline than on a broader ecosystem.

In practice, both can be kept running, but the GMAX Ultra feels closer to the mainstream "commuter appliance" segment with an eye on longevity, while the KS4 Pro leans more towards "good support while it's new, then we'll see". If you like to keep hardware for many seasons and don't mind a bit of DIY, the GOTRAX is the safer bet.

Pros & Cons Summary

GOTRAX GMAX Ultra HIBOY KS4 Pro
Pros
  • Excellent real-world range
  • High-quality LG battery cells
  • Stable, confidence-inspiring ride
  • Pneumatic tyres with good grip
  • Integrated cable lock and clean design
Pros
  • Very attractive purchase price
  • Stronger motor with brisk acceleration
  • Rear suspension eases big bumps
  • Solid tyres eliminate punctures
  • Compact and lighter for carrying
Cons
  • No suspension; rough on bad roads
  • On the heavy side to carry
  • Long charge for big battery
  • App is clunky and optional
  • Rear fender durability complaints
Cons
  • Harsh ride on rough surfaces
  • Shorter range, more charging
  • Hardware needs checking and tightening
  • Solid front tyre grip limitations
  • Overall feel less "mature" than rivals

Parameters Comparison

Parameter GOTRAX GMAX Ultra HIBOY KS4 Pro
Motor power (rated) 350 W (rear) 500 W (rear)
Top speed 32 km/h 30 km/h
Claimed range 72 km 40 km
Realistic range (approx.) 45 km 28 km
Battery energy 630 Wh (36 V, 17,5 Ah, LG) 417 Wh (36 V, 11,6 Ah)
Weight 20,9 kg 17,5 kg
Brakes Front electronic + rear disc Front electronic ABS + rear disc
Suspension None Rear shock absorber
Tyres 10" pneumatic (air-filled) 10" honeycomb solid
Max load 100 kg 100 kg
Water resistance IP54 IPX4
Typical price ~763 € ~355 €

Final Verdict - Which Should You Choose?

If you strip away the marketing and look at how these scooters behave after a month of commuting, the GOTRAX GMAX Ultra emerges as the more complete, less stressful machine. Its combination of long, honest range, better battery pedigree and calmer, more confidence-inspiring ride make it a stronger choice for anyone who genuinely wants to replace a chunk of their daily car or public transport mileage. It's not glamorous, it's not wild, but it behaves like a small, sensible vehicle that you can rely on.

The HIBOY KS4 Pro is, unapologetically, the budget brawler. For the money, you do get lively acceleration, decent top speed and the undeniable convenience of never fixing a puncture. If your rides are short, your roads quite smooth and your wallet firmly in charge of the decision, it can absolutely make sense-just don't expect it to feel as composed or as worry-free when the road gets rough or the journey gets long.

So the split is simple: if you want a scooter that you'll still be happy with after the honeymoon phase, for commutes that aren't just a quick dash around the block, the GMAX Ultra is the safer, more satisfying bet. If you want to minimise upfront cost and are willing to live with some comfort and range compromises, the KS4 Pro gives you plenty of scooter for the cash-but it feels more like a stepping stone than a final destination.

Numbers Freaks Corner

Metric GOTRAX GMAX Ultra HIBOY KS4 Pro
Price per Wh (€/Wh) ❌ 1,21 €/Wh ✅ 0,85 €/Wh
Price per km/h of top speed (€/km/h) ❌ 23,84 €/km/h ✅ 11,83 €/km/h
Weight per Wh (g/Wh) ✅ 33,17 g/Wh ❌ 41,97 g/Wh
Weight per km/h (kg/km/h) ❌ 0,65 kg/km/h ✅ 0,58 kg/km/h
Price per km of real-world range (€/km) ❌ 16,96 €/km ✅ 12,68 €/km
Weight per km of real-world range (kg/km) ✅ 0,46 kg/km ❌ 0,63 kg/km
Wh per km efficiency (Wh/km) ✅ 14,0 Wh/km ❌ 14,9 Wh/km
Power to max speed ratio (W/km/h) ❌ 10,94 W/km/h ✅ 16,67 W/km/h
Weight to power ratio (kg/W) ❌ 0,060 kg/W ✅ 0,035 kg/W
Average charging speed (W) ✅ 105 W ❌ 69,5 W

These metrics show how efficiently each scooter converts money, weight and electricity into speed and distance. Price-per-Wh and price-per-km tell you how much "battery" and usable range you buy for each euro. Weight-based metrics reveal how much mass you lug around for that performance, which matters for portability and feel. Wh-per-km indicates energy efficiency on the road, while power-to-speed and weight-to-power hint at how strong and lively the motor feels relative to the scooter's size. Charging speed shows how quickly a flat pack gets you back on the road.

Author's Category Battle

Category GOTRAX GMAX Ultra HIBOY KS4 Pro
Weight ❌ Noticeably heavier to haul ✅ Lighter, better for stairs
Range ✅ Genuinely long daily range ❌ Shorter, more charging needed
Max Speed ✅ Slightly higher, feels calmer ❌ Just under, similar feel
Power ❌ Adequate but unexciting ✅ Noticeably punchier motor
Battery Size ✅ Much larger capacity pack ❌ Smaller, commuter-limited pack
Suspension ❌ No suspension at all ✅ Rear shock helps impacts
Design ✅ Cleaner, more integrated look ❌ More budget-feel details
Safety ✅ Better grip, more planted ❌ Solid tyres compromise grip
Practicality ✅ Integrated lock, long range ❌ Range limits daily freedom
Comfort ✅ Air tyres smoother overall ❌ Buzzy on rough surfaces
Features ✅ Lock, decent display, basics ❌ App nice, but trade-offs
Serviceability ✅ Parts, guides more established ❌ More brand-dependent support
Customer Support ❌ Mixed, improving slowly ✅ Generally responsive reports
Fun Factor ❌ Sensible, not exactly thrilling ✅ Punchier, feels more lively
Build Quality ✅ Feels more mature, solid ❌ More cost-cut corners
Component Quality ✅ LG cells, hardware feel ❌ Cheaper parts where hidden
Brand Name ✅ Growing mid-range reputation ❌ More budget image
Community ✅ Stronger long-term user base ❌ Less depth, more casual
Lights (visibility) ✅ Adequate, functional package ✅ Side lights aid visibility
Lights (illumination) ✅ Better real road lighting ❌ Good, but not as usable
Acceleration ❌ Sensible, modest shove ✅ Noticeably quicker off line
Arrive with smile factor ✅ Relaxed, confident cruising ❌ Fun, but more fatigue
Arrive relaxed factor ✅ Less vibration, more composure ❌ Solid tyres wear you down
Charging speed ✅ More watts into battery ❌ Slower in comparison
Reliability ✅ Battery, structure inspire trust ❌ More small niggles reported
Folded practicality ❌ Heavy to manoeuvre folded ✅ Easier to stash, lift
Ease of transport ❌ Awkward for multi-modal ✅ Better for bus and train
Handling ✅ Calmer, more predictable ❌ Nervier on rough patches
Braking performance ✅ Grip plus progressive feel ❌ Tyres limit hard stops
Riding position ✅ Wider deck, stable stance ❌ Fine, but less generous
Handlebar quality ✅ Feels sturdier, better grips ❌ Needs screw checks
Throttle response ✅ Smooth, predictable ramp-up ✅ Smooth and responsive
Dashboard/Display ✅ Clean, integrated, readable ❌ Big but sun-wash issues
Security (locking) ✅ Built-in cable lock ❌ App lock, less practical
Weather protection ✅ Solid for light rain use ✅ Similar splash resistance
Resale value ✅ Better long-term desirability ❌ Budget image hurts resale
Tuning potential ✅ More community mods, parts ❌ Less mod culture, options
Ease of maintenance ❌ Flats possible, more care ✅ No flats, simple upkeep
Value for Money ✅ Strong long-term transport value ✅ Superb upfront spec-per-euro

Overall Winner Declaration

Winner

In the Numbers Freaks Corner, the GOTRAX GMAX Ultra scores 4 points against the HIBOY KS4 Pro's 6. In the Author's Category Battle, the GOTRAX GMAX Ultra gets 30 ✅ versus 13 ✅ for HIBOY KS4 Pro (with a few ties sprinkled in).

Totals: GOTRAX GMAX Ultra scores 34, HIBOY KS4 Pro scores 19.

Based on the scoring, the GOTRAX GMAX Ultra is our overall winner. Living with both, the GOTRAX GMAX Ultra simply feels more like a dependable little vehicle than a clever toy. It rides with more confidence, goes noticeably further on a charge, and gives you fewer reasons to worry on grimy, wet city mornings. The HIBOY KS4 Pro fights hard on price and punch, and for short, smooth commutes it absolutely has its charms, but its compromises catch up faster once the novelty of the throttle wears off. If I had to bet my daily commute on one of them, I'd take the keys to the GMAX Ultra without much hesitation. It may not be the most exciting scooter I've ever ridden, but it's the one in this pairing that feels built to quietly get the job done, day after day, without drama-and that's what real-world commuting is all about.

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.