Fast Answer for Busy Riders ⚡ (TL;DR)
The Hiboy KS4 Pro is the better overall choice for most everyday commuters: it's cheaper, simpler to live with, and gives you a no-punctures, no-nonsense ride with enough power and range for typical city journeys. The Razor C45 fights back with a more stable, bicycle-like front end, a touch more speed, and a stronger brand/safety story, but you pay noticeably more for a scooter that still has a pretty harsh rear ride and only average range.
Pick the KS4 Pro if your priority is maximum value and minimal hassle on mostly decent tarmac. Choose the Razor C45 if you really care about front-end comfort, feel safer on a big pneumatic wheel, and are willing to pay extra for the Razor badge and UL certification. Both have compromises; the key is choosing the compromise that annoys you least.
Read on for the full head-to-head breakdown, with real-world riding impressions and all the juicy numbers tucked neatly into tables at the end.
Electric commuter scooters have grown up fast, but a lot of what's on sale still feels either like a toy pretending to be transport, or a mini motorcycle pretending not to be terrifying. The Hiboy KS4 Pro and Razor C45 both try to hit that sweet middle ground: proper adult tools that can replace short car or bus trips, without requiring a gym membership just to carry them up the stairs.
I've spent time on both: the KS4 Pro with its "never, ever change a tube again" promise, and the C45 with its slightly odd big-front-little-rear stance and old-school steel chassis. On paper they're close cousins; on the road, the personalities are very different. One is a sharp-value workhorse, the other is a nostalgic brand trying very hard to be taken seriously.
If you're wondering which one should be your daily accomplice, let's dig in - because the answer depends far less on spec sheets and far more on where, how, and how long you actually ride.
Who Are These For, and Why Compare Them?
These two live in the same broad ecosystem: adult commuter scooters that sit between flimsy rental-style toys and bulky performance machines. Both are single-motor, rear-drive, roughly mid-teens-kilos heavy, and built to sit happily at bike-lane speeds rather than drag-strip numbers.
The KS4 Pro lives down in the budget-friendly end of the pool, the kind of scooter you buy with your rational brain: it's aimed at office workers, students, and first-timers who want a cheap, low-maintenance way to skip the bus. Hiboy's pitch is simple: decent power, decent battery, solid tyres, rear spring, app, job done.
The Razor C45 is priced a tier up, going after riders who remember the Razor name from childhood and now want something grown-up that still feels familiar. It adds a bigger front pneumatic wheel, heavier steel frame, and a touch more speed. On paper, that makes it a direct step-up alternative to the KS4 Pro - which is exactly why these two deserve to be compared directly. The question is whether the C45 actually earns its higher price, or just leans on nostalgia and a certification sticker.
Design & Build Quality
Put the two side by side, and their design philosophies are obvious. The Hiboy KS4 Pro is the stereotypical modern commuter scooter: matte black aluminium, internal cabling where it counts, a tidy central display and a fairly slim, rectangular deck. It looks like what it is - a mass-market product optimised for cost and convenience. Nothing offensive, nothing particularly exciting.
In the hand, the KS4 Pro feels reasonably tight. The stem clamp locks down with decent confidence, the deck coating is grippy rubber that shrugs off rain and mud, and the overall finish is... competent. You can absolutely tell it's built to a price: castings aren't jewellery-grade and some bolts benefit from an early date with thread-locker. But it doesn't scream "disposable toy" either.
The Razor C45 marches in with a different vibe. The steel frame immediately feels more substantial; tap it and it sounds like actual metal, not a hollow extrusion. The welds are chunky, the latch is reassuringly overbuilt, and the whole thing has a faint whiff of "industrial tool" rather than "Amazon special". Cosmetically it's subdued - dark tones, no childish graphics - but that giant front wheel gives it a distinctive stance that turns more heads than the Hiboy ever will.
There's a trade-off, of course. Steel and big wheels add heft, and the C45 feels that bit more old-school in its detailing. Cable routing is more visible, the deck is narrower, and the finish is robust rather than refined. If you're allergic to rattles, both scooters will test your patience eventually, but the Razor's heavier hardware at least inspires more confidence when you're eyeballing a pothole and wondering if everything will still be straight afterward.
Verdict on build: the Hiboy looks more "modern scooter", the Razor feels more "solid tool". If you're sensitive to creaks and flex over time, the C45 has the more reassuring bones - even if it doesn't quite justify its premium on feel alone.
Ride Comfort & Handling
This is where their characters really diverge.
The KS4 Pro rolls on mid-size solid tyres with a single shock at the rear. On fresh asphalt or decent bike paths, it's perfectly agreeable: the deck is wide enough to adopt a natural staggered stance, the bars are at a sensible height for most average-height riders, and the scooter tracks straight without demanding constant corrections. When the surface deteriorates, the romance fades. Solid tyres just don't filter out the high-frequency buzz; after a few kilometres of rough concrete or aged paving, your hands and knees will know about it. The little rear shock takes the sting out of bigger hits, but the basic feel remains firm.
The C45 comes at the problem from a more unorthodox angle: one big, air-filled front wheel and a smaller solid rear, with no suspension at either end. The front end is genuinely good. That big pneumatic tyre swallows cracks and edges, and the larger diameter makes tram tracks and expansion joints far less dramatic. Steering is calmer too - at higher speeds the Razor feels more "bike-like" than the Hiboy, which is especially noticeable in blustery crosswinds.
Then the rear wheel hits the same bump and reminds you that life is pain. With a solid tyre bolted straight to a steel frame, the C45's tail is unforgiving on bad surfaces. It's better than a dual-solid scooter only because the front takes the hit first; but if you live somewhere with cobbles, ancient pavements or patched-up tarmac, you'll quickly learn to unweight the rear and use your knees as suspension. Compared with the Hiboy, the Razor is a bit more pleasant at the hands, a bit more punishing at the feet.
Handling-wise, both are fine at typical city speeds. The KS4 Pro feels lighter and a touch more flickable weaving around pedestrians. The Razor feels calmer in sweeping turns and more reassuring in straight-line high-speed runs thanks to that big gyro at the front. Neither is a corner-carving weapon, but neither is scary if you ride like you have a self-preservation instinct.
Performance
Both scooters sit in that "quick enough to be fun, not quick enough to terrify you" bracket.
The Hiboy's rear motor has a bit more rated grunt on paper, and it shows in low-speed punch. From a traffic light, the KS4 Pro steps off eagerly; not violently, but with enough urgency that you'll clear slower cyclists without needing a run-up. Acceleration is smooth and predictable, with no nasty surges when you nudge past half-throttle. Top speed feels right for urban use - fast enough that bike-lane commuting doesn't feel like a chore, slow enough that the modest chassis and solid tyres don't feel completely out of their depth.
Hill performance on the KS4 Pro is better than the cheap 250-350 W herd but still firmly in "single-motor commuter" territory. Short, moderate inclines are fine; drawn-out steeps will see your speed winding down and the motor audibly working. The upside is that you don't have to hop off and kick like you do on genuinely underpowered scooters; the downside is that you won't be overtaking many e-bikes uphill either.
The Razor C45 runs a slightly smaller-rated motor but isn't dramatically behind in the real world. In its quicker modes it gets up to cruise speed briskly enough, and the rear-drive layout gives good traction when you push off on damp tarmac. Top speed edges ahead of the Hiboy, and you feel that extra headroom: on long, open stretches the C45 carries speed a bit more confidently, helped by its calm front-end geometry.
Where the C45 stumbles is climbing. On gentle grades it behaves; on steeper urban hills, especially with heavier riders, it runs out of enthusiasm sooner than the Hiboy. You can feel it bogging down earlier, forcing you either to accept a very leisurely pace or start adding human leg power. If your commute has one "that" hill you dread on a bicycle, the KS4 Pro has the healthier appetite for it.
Braking is a mixed story on both. The Hiboy's combination of rear disc and front electronic brake gives a reasonably balanced, confidence-inspiring stop for its speed range, provided the disc is set up properly. It doesn't feel like a performance system, but it doesn't feel under-gunned either.
The C45 also uses a disc plus regen combo, but the tuning isn't as confidence-inspiring. At lower speeds it's fine; at the top of its speed range you need to plan ahead. Squeeze hard and it will slow, but it doesn't have that reassuring bite you might expect from something this heavy and this fast. On dry surfaces with room to spare, it's acceptable. In panic situations or on wet surfaces, it's one of the scooter's weaker areas.
Battery & Range
Range is where spec sheets love to lie, and both brands do their fair share of optimism.
The KS4 Pro's battery sits at the upper end of what you usually get in its price class. In the real world, ridden like an actual commuter tool - full-speed where you can, some hills, stop-start city riding - you're typically looking at a comfortable there-and-back for a short to medium commute, and a solid one-way for longer ones with a charge at the other end. Ride more gently in Eco mode and you can stretch it further, but very few people buy a scooter to trundle along in permanent energy-saving mode.
The Razor C45's pack has a bit more voltage but a similar real-world story: the brochure promises a long day out; reality delivers a respectable morning and evening commute with some margin, as long as you're not hammering Sport mode from full to empty. In mixed riding, the two aren't worlds apart, though the Hiboy tends to feel a bit more efficient per kilometre, especially given its lower weight and slightly softer performance ceiling.
Both charge in the same "leave it at work, it's full when you clock out" timeframe. Neither is remotely fast-charge territory; you're looking at a routine of overnight or office-day top-ups rather than opportunistic café charges. On sheer battery-for-the-money, the Hiboy is clearly more generous. The Razor's pack is fine, but at its price point it doesn't scream exceptional value.
Portability & Practicality
Neither of these is what you'd call featherweight, but the Hiboy KS4 Pro is the more forgiving companion when you have stairs or trains in your life. Its weight is on the upper edge of what a reasonably fit adult will tolerate daily without grumbling, and the fold-and-latch mechanism is quick and intuitive. Folded, it's compact enough to disappear under a desk or into a car boot without a game of Tetris. The stem locks down to the rear, giving you something solid to grab, and the balance point is sensible enough that short carries aren't a wrestling match.
The Razor C45 turns the dial up slightly on everything - including mass. You notice that extra heft the first time you have to carry it up more than one flight. The big front wheel also makes the folded package longer and more awkward in narrow hallways or crowded trains. It folds reliably and the mechanism feels robust, but this is not a scooter you'll love if your commute involves a lift that's always out of order.
On the plus side, the C45's deck and frame do feel ready for abuse: curb drops, the odd careless kick into a metal pole, that sort of thing. The Hiboy will survive normal commuter life just fine, but you'll treat it a bit more gently. For mixed-mode journeys where "pick up and run for the train" is a regular move, the KS4 Pro is the more realistic partner.
Safety
Safety is more than just brakes. It's whether the scooter remains predictable when things go wrong.
On lighting, the Hiboy does surprisingly well for its price. A decent high-mounted headlight, brake-responsive rear light, and side lighting make you more visible in traffic than many pricier scooters. The beam pattern isn't going to wow hardcore night riders, but for urban illumination and conspicuity it's perfectly serviceable.
The Razor C45 also gives you a bright forward light and a responsive rear lamp. Where it scores an extra psychological point is with its electrical certification: that UL badge reassures riders who follow the "scooter caught fire in flat" news cycle. Is it the only route to safety? No. Does it reassure owners who charge indoors? Absolutely.
On road holding, both benefit strongly from larger-than-rental wheel sizes, but the C45's balloon front tyre is a real advantage on bad surfaces and in mixed weather. It simply tracks more securely over trash and cracks. Paired with a rear solid tyre and average brakes, though, that advantage is partially squandered. You feel confident pointing it at trouble; you're slightly less confident if you then need to stop quickly.
The Hiboy trades some of that "big wheel" composure for a more predictable, balanced braking system and the zero-blowout reassurance of solid tyres. You'll feel more of the road under you, but you're not worrying about flats or mysterious sidewall bulges appearing mid-commute. At commuter speeds, that absence of drama matters as much as outright capability.
Community Feedback
| HIBOY KS4 Pro | RAZOR C45 |
|---|---|
What riders love
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What riders love
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What riders complain about
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What riders complain about
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Price & Value
This is where the two stop being friendly rivals and start looking like they're in different leagues.
The Hiboy KS4 Pro comes in at a price that would normally buy you a weaker motor, smaller battery and definitely no suspension. You are not getting a miracle - build quality, refinement and comfort are firmly "good enough" rather than luxurious - but in terms of what you can actually do per euro, it's very hard to argue with. For someone who just wants an honest commuter that doesn't devour tyres or bank accounts, the KS4 Pro represents a very efficient way to turn electricity into saved bus fares.
The Razor C45 asks for a noticeably fatter wallet. In return, it offers a sturdier steel frame, a bigger front wheel, a slightly higher top speed, brand recognition and that UL certification. What it does not offer is a clearly better overall experience in day-to-day riding. The rear comfort is arguably worse, the range is similar, and serviceable as it is, the spec doesn't quite feel like it justifies the premium unless those specific strengths - brand, safety badge, front-end feel - sit very high on your shopping list or you catch it with a heavy discount.
Service & Parts Availability
Hiboy has built a solid presence in the budget and mid-budget e-scooter space across Europe. That means parts, third-party tutorials, YouTube fixes and aftermarket spares are relatively easy to find. Official support is better than the no-name brands, with reasonably responsive warranty help and replacement components. You'll still be wrenching a bit yourself if something minor goes wrong, but you won't be hunting obscure forums for a matching brake disc.
Razor, on the other hand, has decades of retail presence and a fairly structured spare parts pipeline. For simpler mechanical parts, that's great news; you're more likely to find official components and documentation. On the electronics side, it's a bit more mixed in practice - you're still dealing with an OEM-style product rather than a hobbyist platform - but overall, both support and parts availability are above the rock-bottom norm. If anything, Razor has a small edge in "walk into a big store and get help" potential, while Hiboy often wins in the enthusiast community and aftermarket space.
Pros & Cons Summary
| HIBOY KS4 Pro | RAZOR C45 |
|---|---|
Pros
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Pros
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Cons
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Cons
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Parameters Comparison
| Parameter | HIBOY KS4 Pro | RAZOR C45 |
|---|---|---|
| Motor power (rated) | 500 W rear hub | 450 W rear hub |
| Top speed | ca. 30 km/h | ca. 32 km/h |
| Claimed range | up to 40 km | up to 37 km |
| Realistic mixed range (est.) | ca. 25-30 km | ca. 20-25 km |
| Battery capacity | 417 Wh (36 V 11,6 Ah) | ca. 468 Wh (46,8 V, est. 10 Ah) |
| Weight | 17,5 kg | 18,24 kg |
| Brakes | Rear mechanical disc + front e-ABS | Rear mechanical disc + regen |
| Suspension | Rear spring shock | None |
| Tyres | 10" honeycomb solid (front & rear) | 12,5" front pneumatic / 10" rear solid |
| Max rider load | 100 kg | 100 kg |
| Water resistance | IPX4 | Not stated (UL2272 system) |
| Charging time | ca. 5-7 h | ca. 6 h |
| Approximate price | ca. 355 € | ca. 592 € |
Final Verdict - Which Should You Choose?
Both of these scooters live in that awkward "nearly there" tier: they do the basics reasonably well, but each carries at least one annoying compromise that stops it being an easy, universal recommendation. When you line them up honestly, though, the Hiboy KS4 Pro is the one that makes more overall sense for more riders.
The KS4 Pro delivers the better balance of punch, range, weight and everyday usability, and does it at a price that makes its flaws easier to forgive. Yes, the solid tyres and firm chassis mean you'll feel rough tarmac, and no, it doesn't have the rock-solid front end of the Razor. But it climbs better, stops more reassuringly, folds into your life with less drama and takes a much smaller bite out of your wallet.
The Razor C45 is not without merits. If you're particularly nervous about small wheels, that big front pneumatic tyre is genuinely confidence-inspiring, and the steel frame feels like it will outlive several owners. The slightly higher top speed is pleasant on long, smooth paths, and the brand/safety story has real appeal if you're wary of anonymous imports. The problem is that its rear ride and braking don't really match its price tag, and the added weight doesn't buy quite enough real-world benefit to justify lugging it around.
If you prioritise value, practicality and a minimum of mechanical drama, the Hiboy KS4 Pro is the smarter buy. If you prize a calmer, bicycle-like front feel, trust the Razor name, and are happy to pay extra (and live with a harsher rear), the C45 can still be the right call for a specific kind of rider. But for most commuters trying to get to work and back with as little fuss as possible, the Hiboy walks away with this one.
Numbers Freaks Corner
| Metric | HIBOY KS4 Pro | RAZOR C45 |
|---|---|---|
| Price per Wh (€/Wh) | ✅ 0,85 €/Wh | ❌ 1,27 €/Wh |
| Price per km/h of top speed (€/km/h) | ✅ 11,83 €/km/h | ❌ 18,50 €/km/h |
| Weight per Wh (g/Wh) | ❌ 41,99 g/Wh | ✅ 38,96 g/Wh |
| Weight per km/h (kg/km/h) | ❌ 0,58 kg/km/h | ✅ 0,57 kg/km/h |
| Price per km of real-world range (€/km) | ✅ 12,91 €/km | ❌ 26,31 €/km |
| Weight per km of real-world range (kg/km) | ✅ 0,64 kg/km | ❌ 0,81 kg/km |
| Wh per km efficiency (Wh/km) | ✅ 15,16 Wh/km | ❌ 20,80 Wh/km |
| Power to max speed ratio (W/km/h) | ✅ 16,67 W/km/h | ❌ 14,06 W/km/h |
| Weight to power ratio (kg/W) | ✅ 0,035 kg/W | ❌ 0,0405 kg/W |
| Average charging speed (W) | ❌ 69,5 W | ✅ 78,0 W |
These metrics strip the scooters down to pure maths: how much you pay for each unit of battery and speed, how heavily they carry their power and energy, how efficiently they turn watt-hours into kilometres, and how quickly they refill their packs. Lower values usually mean better efficiency or value, except for power density and charging speed, where higher is better. They don't tell you how the scooter feels, but they do reveal where you're getting more (or less) machine for your money and kilograms.
Author's Category Battle
| Category | HIBOY KS4 Pro | RAZOR C45 |
|---|---|---|
| Weight | ✅ Slightly lighter, easier lifts | ❌ Heavier for similar performance |
| Range | ✅ Goes further per charge | ❌ Shorter realistic range |
| Max Speed | ❌ Slightly slower cruise | ✅ Tiny top speed edge |
| Power | ✅ Stronger motor feel | ❌ A bit less grunt |
| Battery Size | ❌ Slightly smaller pack | ✅ Marginally larger capacity |
| Suspension | ✅ Rear shock helps impacts | ❌ No suspension at all |
| Design | ✅ Cleaner, more modern look | ❌ Functional but clunky |
| Safety | ✅ Better braking balance | ❌ Brakes feel weaker |
| Practicality | ✅ Easier to fold, stash | ❌ Longer, heavier folded |
| Comfort | ❌ Buzzy on rough surfaces | ✅ Softer front, calmer feel |
| Features | ✅ Suspension, app, side lights | ❌ Fewer standout extras |
| Serviceability | ✅ Simpler, common-format parts | ❌ Heavier steel, trickier work |
| Customer Support | ✅ Decent online brand support | ✅ Strong retail presence |
| Fun Factor | ✅ Punchy, light, playful | ❌ Stable but a bit stodgy |
| Build Quality | ❌ Budget, needs bolt checks | ✅ Steel frame feels tougher |
| Component Quality | ❌ Very much budget-grade | ✅ Slightly more robust feel |
| Brand Name | ❌ Less mainstream recognition | ✅ Household-name familiarity |
| Community | ✅ Huge budget-scooter user base | ❌ Smaller adult user scene |
| Lights (visibility) | ✅ Strong all-round visibility | ❌ Adequate but basic |
| Lights (illumination) | ✅ Good for urban speeds | ❌ Fine but not better |
| Acceleration | ✅ Snappier off the line | ❌ Slightly lazier start |
| Arrive with smile factor | ✅ Feels lively, engaging | ❌ Feels a bit workmanlike |
| Arrive relaxed factor | ❌ More vibration, more fatigue | ✅ Calmer front, less twitchy |
| Charging speed | ❌ Slightly slower per Wh | ✅ Faster average charging |
| Reliability | ✅ Fewer reported battery dramas | ❌ More mixed battery reports |
| Folded practicality | ✅ Shorter, easier to stash | ❌ Long front wheel overhang |
| Ease of transport | ✅ Lighter, better carry handle | ❌ Heavier, more awkward bulk |
| Handling | ❌ More nervous over roughness | ✅ More stable, composed |
| Braking performance | ✅ Stronger, more reassuring | ❌ Longer stops at speed |
| Riding position | ✅ Roomier deck, natural stance | ❌ Narrower, more cramped deck |
| Handlebar quality | ❌ Basic but serviceable | ✅ Chunkier, more solid feel |
| Throttle response | ✅ Smooth, linear, predictable | ❌ Less refined at edges |
| Dashboard/Display | ✅ Clear, central, informative | ❌ Very basic, minimal data |
| Security (locking) | ✅ App lock adds resistance | ❌ No meaningful electronic lock |
| Weather protection | ✅ Rated splash resistance | ❌ Less clearly specified |
| Resale value | ❌ Budget brand depreciation | ✅ Brand helps resale appeal |
| Tuning potential | ✅ Popular, lots of hacks | ❌ Less modding community |
| Ease of maintenance | ✅ Simpler, lighter to service | ❌ Heavier steel, awkward rear |
| Value for Money | ✅ Outstanding spec for price | ❌ Too expensive for package |
Overall Winner Declaration
In the Numbers Freaks Corner, the HIBOY KS4 Pro scores 7 points against the RAZOR C45's 3. In the Author's Category Battle, the HIBOY KS4 Pro gets 28 ✅ versus 12 ✅ for RAZOR C45.
Totals: HIBOY KS4 Pro scores 35, RAZOR C45 scores 15.
Based on the scoring, the HIBOY KS4 Pro is our overall winner. Between these two, the Hiboy KS4 Pro ends up feeling like the more complete, less frustrating package: it may ride a bit firm, but it gives you more real-world capability for less money and slips into daily life with fewer compromises. The Razor C45 has its charms - especially that planted front wheel and the reassuring heft of its frame - but the combination of a harsher rear ride, softer brakes and a noticeably higher price keeps it from stealing the crown. If you're standing in the shop (or staring at a browser tab) wondering which one will actually make your commute better rather than just different, the KS4 Pro is the scooter you're more likely to step off thinking, "That was worth it." The C45 will suit a narrower slice of riders, but for most people, the Hiboy is the one that quietly does the job and lets you forget about it - which is exactly what a commuter scooter should do.
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.

