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Four all-terrain e-bikesK01, K02, K03 share one 960 Wh battery. M1 ARETE is full-suspension.
Compare the four
Frame 2 years · Motor and battery 1 year14-day returns on e-bikes, original packaging required.
Full terms
All-Terrain Electric Bike
Rugged all-terrain fat tire
Designed for women
Full-Suspension Fat Tire Electric Bike
Full-Suspension Electric Mountain Bike
Height decides more of this than motor, battery or price, and it is the one thing you cannot change afterwards. Move the slider and the three above go quiet or stay lit — nothing is hidden either way.
Between two sizes, the shorter frame is almost always the right one: a bike you can put a foot down on at a red light is a bike you ride in traffic.
M1 ARETE165–193 cmEdge of its range
K03 RANGER190–200 cmEdge of its range
CITY K02158–178 cmEdge of its range
TITAN X K01178–190 cmEdge of its range
All three bikes leave the warehouse set to EU road limits — pedal-assist, 250 W continuous — and all three ship with a throttle fitted. How that throttle is treated differs from country to country; if you need a firm answer for where you ride, ask us before you order. The same 960 Wh battery fits all three frames and charges on the same 48 V 4 A charger, so a household with two bikes only needs one spare pack.
The three are separated by who rides them and where, not by budget. The K01 Titan X is the trail frame: a 500 W rear hub motor with a torque sensor, sized for riders from 178 to 190 cm. The K02 Aurora S shares that motor, sensor, battery and range on a step-through frame, for riders from 158 to 178 cm — nothing to swing a leg over. The K03 Ranger is for 190 to 200 cm: two motors making 1500 W combined, 26 × 4.0″ fat tyres, and a load limit of around 200 kg. It pays for that in weight and in range, and it uses a speed sensor rather than a torque sensor. At exactly 178 or 190 cm you sit on the edge of two frames; the fit finder above shows both.
Range depends on far more than the battery: your weight plus the load, the wind, the gradient, the temperature, the tyre pressure and the assist level you ride in. All three bikes carry the same 48 V 20 Ah, 960 Wh pack with Samsung cells. On the K01 and K02 that gives a range of about 55 km; on the K03, with two motors and fat tyres, 35–45 km. A full charge takes 6–8 hours on the supplied 48 V 4 A charger, which fits all three.
Those are guide figures, not a promise for every ride. Cold weather, headwinds, hills, heavy loads and high assist all take kilometres off, and a cold battery gives back less until it warms up again. Plan a regular route with a margin, not against the headline number.
An e-bike is heavier and faster than an ordinary bicycle, so brake pads, chains and tyres wear sooner. Check them more often than you would on an unassisted bike, and replace tyres before they are bald rather than after.
What the warranty covers: the motor for 24 months and the battery for 12 months, both counted from delivery. The controller and components other than the motor and battery are not covered. Extended warranty adds 12 months of battery cover, is sold one year at a time and can be bought within 30 days of delivery — and we email you before your original cover runs out.
Look after the battery and it looks after the range: charge it indoors, let it warm up before charging after a cold ride, and avoid leaving it at full charge for weeks at a time.
IP65 on all three bikes means dust-tight and protected against water jets from any direction — rain, puddles and a rinse are fine. It does not mean submersible: do not ride through water deep enough to reach the motor, and do not aim a pressure washer at the motor, display connector or battery rail. Water forced past a seal stays behind it. After a wet ride, wipe down the contacts and let everything dry before the next charge.
Child seat: yes on the K01 and K02, which both have a rear rack rated to carry one. Check the seat maker's weight limit and fitting method — most clamp to the seat tube or the rack itself. Trailer: all three bikes can tow a trailer if it attaches to the rear axle or a dedicated hitch, but a trailer adds drag and takes range off every charge, especially on the K03's fat tyres. Keep the combined weight — rider, bike, load and trailer — within the bike's limit, and check your country's rules on towing with an e-bike before you fit one.
Licence, frame size, rain, assembly, returns — answered here because waiting a day for any of them means you go somewhere else.
Something else? Our team answers in your language.
For a 25 km/h pedelec — which all three of these are — no licence and no plate anywhere in the EU, and no compulsory insurance in Germany, Austria or the Netherlands. A helmet is not required by law for an adult in most of the EU and is required for under-16s in some countries; check your own. Third-party liability cover is worth having anyway, and most household policies already include it.
Take the smaller one. A frame you can stand over flat-footed is a frame you are comfortable stopping on in traffic, and a stem or a seatpost can add reach later — a frame that is too big cannot be made smaller. The slider above puts your height against all three; each bike page prints stand-over height and the rider range it was designed for.
On hills and on a bike you lift, yes. A mid-drive (K01) drives the chain, so it uses your gears, keeps the weight low and central, and responds to how hard you are pedalling. A rear hub (K02, and one of the K03’s two) is quieter, needs no chain sacrifice and is cheaper to live with — on flat city riding most people cannot tell them apart after a week. If your commute has a real climb in it, take the mid-drive.
The warranty is written in charge cycles rather than months, because that is what wears a cell. A commuter charging twice a week is a different bike from a courier charging daily, and a promise in months would be a lie to one of them. Expect a pack to hold most of its capacity for several hundred full cycles; expect it to lose range in the cold and get it back in spring.
Rain yes — the electronics are sealed for weather and the bikes are ridden through German winters. A pressure washer, no, and not a hose aimed at the motor, the display connector or the battery rail. Water forced past a seal stays behind it. A bucket, a brush and a rinse is the whole method.
Take the pack off and bring it up — every bike here has a removable battery, which is half the reason to buy one in a city. Charge it at room temperature, on a hard surface, not overnight on a bed or a sofa, and never straight after it has been out in freezing weather: let it come up to room temperature first.
Roughly twenty minutes with the hex key that is in the box: front wheel, handlebar, pedals, seatpost, and a charge before the first ride. The gears and brakes are set at our end and are checked again by you against the sheet that comes with it. Nothing on the assembly list needs a torque wrench except the stem, and the figure is printed on the part.
Fourteen days, and we collect it. You do not box a bike and you do not pay the courier. That is also why we treat the fortnight as a real test ride rather than a returns policy — your own hill in your own weather answers things a ten-minute loop in a car park cannot.
Each of these answers a different half of the decision, and all five are faster as a link than as a message.
Two numbers off a wall — height and inside leg — and the frame that follows from them, with the stand-over figures printed rather than described.
Every parameter in three columns, including the ones nobody notices until the second winter — weight with the pack in, stand-over, chain interval.
Where a partner workshop keeps a bike you can ride it this week. Everywhere else the fourteen days are the test ride, on your own roads.
Which jobs are twenty minutes at home, which want a bench, and the one action that ends the cover.
Racks, locks, lights and a spare pack — filtered by the bike you own, so nothing on the page is a €79 guess.
A lock the insurer accepts, a rack the frame already has the eyelets for, and the charger that lives at the office.
