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MiRider ONE (2021) review

Miniature folding ebike updated and upgraded for 2021

Our rating 
4.5 out of 5 star rating 4.5
GBP £1,395.00 RRP
Cyclist in blue top riding the MiRider One folding bike

Our review

Great looking and improved mini-folder with plenty of punch
Pros: Punchy power; great looks; easy folding; bags of fun to ride
Cons: The single gear could be limiting for some riders
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Back in 2020, I tested the original MiRider ONE and came away impressed by the compact folder with its fizzy rear hub motor – giving it a very strong four out of five stars.

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I continued to ride it throughout most of last year, despite commuting being off the cards, and it became my go-to-bike for short trips to grab essentials from the local shops.

So I was excited to test the latest version of the MiRider One which has seen updates to the motor’s torque, a drop in weight of over 1.5kg, and a change of wheels, tyres and grips to improve performance and weight.

MiRider ONE key changes

  • More than 1.5kg weight saved compared to previous model – was 18.7kg, now 17.2kg
  • Increase in torque
  • New lighter weight, alloy rimmed and traditionally spoked wheels
  • 1.95in slick tyres changed to 1.75in Schwalbe Road cruisers
  • New ergonomic grips

MiRider One 2021 updates

After putting in more than 300 miles of testing into the previous model, I provided some feedback to MiRider on a few niggles I had with the bike.

In particular, I concluded that the bike would be improved by a reduction in weight – at 18.7kg it was a bit weighty to carry any real distance.

I also thought the skinny lock-on grips were a bit uncomfortable if you spent more than 30 minutes riding, and the saddle’s big profile with its plush, squishy padding wasn’t to my liking either.

And, while the fat 2.5in slick tyres worked well, they did seem a bit like overkill for a bike with an air shock.

The great news is that MiRider took all this on board, and as well as making a number of changes under the skin of the bike, this latest version sees a reduction in weight from 18.7kg to 17.2kg (replete with folding pedals, lights and mudguards), which is impressive for a bike of this type.

While they looked super-cool, the six-spoke cast magnesium wheels of the previous model didn’t exactly help on the scales. So new lighter weight, alloy rimmed, traditionally laced spoked wheels are now specced.

The 2021 version of the MiRider One folding bike comes with spoked wheels
Part of the MiRider One’s weight-saving includes new spoked wheels rather than the heavier magnesium wheels seen on the original.
Russell Burton / Immediate Media

The super-fat slicks have been switched too, for narrower Schwalbe Road cruisers, which are made from a compound that’s claimed to be faster rolling.

The hard lock-on grips have also been dropped in favour of some smartly shaped ergonomic grips. They’re well suited to a bike that does place a lot of your weight on the bar, and I can confirm the bike is significantly more comfortable on the hands than the previous model.

MiRider ONE (2021) details

The beauty of the One’s design is its adjustability, which fits a range of rider heights from 5ft to 6ft 4in. It’s able to fit so many rider sizes because of its adjustable telescopic bar/steerer and telescopic seatpost, which features a rather clever flip-lever lock-out.

In my household, heights range from 5ft to 6ft 2in, and it’s worked well for both of us sharing the bike. If you’re taller than 6ft 4in, MiRider offers a longer seatpost as an option.

The box section frame remains the same as the previous model, as does the boxy rear swingarm. The swingarm is anchored above the chainset.

Pack shot of the MiRider One folding bike
The MiRider One arrives fully equipped with mudguards, lights and folding pedals.
Russell Burton / Immediate Media

The bike is based on a unified-rear-triangle (URT) suspension design. This sees the crankset integrated into the rear triangle and means that the suspension only ‘works’ when you’re sat on the bike because your feet aren’t sprung.

This was a popular design on early full-suspension mountain bikes, though fell out of favour as the understanding of suspension kinematics and technology moved on.

The design presents less of a compromise on a folding bike, though – the rear suspension is simply there to provide comfort, rather than provide exceptional off-road handling.

A URT design also makes it possible to run the bike with a singlespeed or hub-gear drivetrain because the chain tension remains constant, whereas typical suspension systems require a chain tensioner.

Like the original, the 2021 model is assembled to order in the UK and I’ve been impressed with the attention to detail, such as a neoprene cable tidy that wraps the cables together so they don’t get in the way of the fold.

The MiRider One folding bike is equipped with integrated lights
The integrated lights are controlled and powered by the ebike control system.
Russell Burton / Immediate Media

The included accessories are a great touch too, including a front light that’s activated by the system’s LCD head unit, and integrated mudguards that do a great job of keeping road spray at bay.

Lots of the MiRider’s rivals charge extra for equipment like this – Brompton, Dahon and GoCycle should take note.

MiRider ONE (2021) folding technique

Once folded, the bike measures 770mm x 430mm x 680mm with the bar and seatpost on their lowest settings, compared to 1,340mm x 575mm x 1,100mm unfolded.

The fold is as simple as it gets with a large central hinge and a safety lock that halves the bike’s length. The folded bike is secured via a pair of magnets on the front dropout (axle) and the rear. It’s then a case of folding down the bars, lowering the telescopic seatpost and tidying away any cables.

The MiRider One folding bike in its folded position
The MiRider’s fold isn’t as compact as a Brompton but it’s easy to manoeuvre.
Russell Burton / Immediate Media

The 17.2kg all-up weight still takes a bit of lifting, but I like the new quick strap that secures the folding bike together without relying solely on the magnetic closure to stop it from unfolding while portaging.

Underneath the bottom bracket is a single urethane skate wheel that sits proud of the chainring to allow the bike to be easily manoeuvred when folded – you can even ‘trolley’ the folded bike by the seatpost.

The MiRider One folding bike in its folded position
The bike can be trolleyed on both wheels using the seatpost.
Russell Burton / Immediate Media

The fold is very quick and clean, and your hands don’t get near any of the bike’s mucky bits. Folding or unfolding takes less than a minute, which makes it ideal for mixed-mode commutes.

MiRider ONE (2021) motor and gearing

The MiRider One folding bike has a chainring guide
The chainset has a chainguard, which should help keep your trouser cuffs clean.
Russell Burton / Immediate Media

The rear hub motor still offers 250w of assistance, but compared to the original, the latest model sees a jump in torque. MiRider doesn’t state the exact torque figure, but compared to the previous version it certainly packs more punch.

Next to the right-hand brake lever is a large thumb-activated lever, which is the power boost trigger.

This adds power assistance from a standing start to 4.5mph without pedalling. Once you reach 4.5mph, the assistance will switch to a turbo-like boost up to the legal limit of 15.5mph / 25.5kph in the UK.

That means this unassuming little folder will keep up with traffic straight off the lights (at least until 15mph), and zipping through traffic on the MiRider is a blast.

The trigger not only comes in handy in traffic but adds a helpful boost on any sort of incline.

For example, my test rides took in urban traffic as well as a few short, steep climbs that included one rise a mile long with a constantly changing gradient and a section that rises above 14 per cent.

Usually, on a bike with just one gear, this kind of gradient would involve a standing, bar-wrenching effort, but on the MiRider you can use the boost trigger to get your pace and cadence where you need it to tackle a tricky gradient ‘hump’.

The gearing on the 16in-wheeled machine is a 48-tooth chainring paired with a 14-tooth sprocket, which equates to a 49in gear. That’s quite ‘spinny’ for more seasoned cyclists but it’s nice and easy to turn if you’re more of a leisure rider. A bike like this isn’t designed to challenge riders, so I approve of the choice.

The MiRider One control unit sits on the handlebar
The LCD control unit offers five levels of assistance and plenty of info on tap.
Russell Burton / Immediate Media

The bar-mounted LCD head unit displays the odometer, time, current speed, and has the functionality to switch between five different power levels via simple up and down switches, as well as switch on the integrated front light by pressing and holding the up switch.

MiRider One (2021) ride impressions

The range impressed and I achieved a max of 45.64 miles compared to MiRider’s claim of 40 miles. At best, I managed 1,797ft of elevation, though that involved lots of switching between the five modes and riding solely on tarmac. On more mixed-mode riding, such as towpaths and trails as well as tarmac, the range dropped down to 25 miles.

As ever, ebike range is very dependent on how you use the system, rider weight, topography and weather conditions.

If you ride the MiRider within the power assistance band, as you would if you wanted to ride to work without breaking a sweat, the range dropped significantly to around 15 to 20 miles.

However, this isn’t much of an issue because the charger is so compact – 135mm x 65mm x 30mm – so it’s easy to stuff into a bag for charging at work. The battery simply clips out of the main frame and can be charged to full capacity in just two and a half hours, so any range anxieties can be put aside.

Cyclist in blue top riding the MiRider One folding bike
The MiRider One’s compact dimensions hide quite a punchy e-drive system.
Russell Burton / Immediate Media

The MiRider One is a lot of fun to ride. It’s quite short and the head angle is pretty upright, which makes the handling fast and ideal for negotiating tight urban spaces. Don’t expect it to descend like a pro, though – it’s just not that kind of bike.

I’m still not a fan of the big squishy saddle, but plenty of others who tried it liked it.

The new MiRider may not look quite as cool without its mag spoked wheels but it’s a heap lighter and the motor is noticeably punchier. It still folds well, too.

The singlespeed drivetrain of the bike might frustrate some cyclists, but if you get into the groove of the MiRider One being a handy form of urban transportation, it’s a great little machine.

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MiRider One (2021) bottom line

Is it perfect? Not yet. The lighter wheels mean you need a pump with a flexi hose because there isn’t much room for a track pump head – anyone who’s tried to inflate kids’ bike tyres will know the frustration – and I’d still like to see a geared option,  and even more weight lost. However, it is a lot of fun and one of the best value folding ebikes available right now.

Product Specifications


Price br_price, 5, 3, Price, GBP £1395.00
Weight br_weight, 5, 6, Weight, 17.2g (One Size) – Inc. pedals, light, guards. kickstand, Array, g
Brand br_brand, 5, 10, Brand, Mirider


Features br_Features, 11, 0, Features, Gears: Single speed 48/14
Pedals: Wellgo F265 alloy folding pedals
Accessories: Front LED light; Kickstand; Mudguards (front and rear)
Available sizes br_availableSizes, 11, 0, Available sizes, One Size
Brakes br_brakes, 11, 0, Brakes, Clark’s CMD24 Disc brakes with Wuxing brake levers
Fork br_fork, 11, 0, Fork, Alloy
Frame br_frame, 11, 0, Frame, Magnesium Alloy with rear air-shock suspension
Grips/Tape br_gripsTape, 11, 0, Grips/Tape, MiRider ergo grips
Motor br_motor, 11, 0, Motor, 36v 5.2ah Lithium-ION cells by LG rear hub 250w motor, 5 mode LCD display, and power throttle
Saddle br_saddle, 11, 0, Saddle, Unbranded gel saddle
Seatpost br_seatpost, 11, 0, Seatpost, Adjustable
Tyres br_tyres, 11, 0, Tyres, Schwalbe Green compound Road cruiser tyres with sealant filled inner tubes
Wheels br_wheels, 11, 0, Wheels, Alloy spoked wheels