Cyrusher Flex vs Engwe O20 Boost
Torque, battery, weight, pricing and features — side by side.
Each on its own: Cyrusher Flex specs, UK price and stock · Engwe O20 Boost specs, UK price and stock
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Full-suspension mountain eBike with switchable torque/cadence sensing and a removable 720Wh LG battery
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£1,399
Applied automatically when you use our Buy button. Only needed if you go direct:
£50 off at the official Cyrusher UK store. Our Buy buttons apply it for you — you should see it come off in the basket before you pay. Verified at the checkout on 21 September 2026. It is not offered on the Loop 2.0, where Cyrusher's own checkout refuses it. Applied automatically when you use our Buy button. Only needed if you go direct:
£50 off at the official Cyrusher UK store. Our Buy buttons apply it for you — you should see it come off in the basket before you pay. Verified at the checkout on 21 September 2026. It is not offered on the Loop 2.0, where Cyrusher's own checkout refuses it.BESTEBIKESUK
£50 off — applied for you
BESTEBIKESUK
Delivery: Free (UK)
In stock at last check · checked
Folding step-through with torque-sensor assist, a 720Wh battery and hydraulic brakes
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£1,099
Applied automatically when you use our Buy button. Only needed if you go direct:
Our own code: 10% off at the official Engwe UK store, and it credits this site as the referrer. Our Buy buttons apply it for you. Verified at checkout, 31 August 2026. Applied automatically when you use our Buy button. Only needed if you go direct:
Our own code: 10% off at the official Engwe UK store, and it credits this site as the referrer. Our Buy buttons apply it for you. Verified at checkout, 31 August 2026.BESTEBIKESUK
10% off — applied for you
BESTEBIKESUK
Delivery: Free (UK)
In stock at last check · checked
Which should you choose?
Choose the Cyrusher Flex if…
…it has more torque (+12 Nm).
Choose the Engwe O20 Boost if…
…it costs less (£300 cheaper) and is lighter (6 kg lighter).
Based only on the measured differences below — manufacturer-published figures, not independently tested.
At a glance
Cyrusher Flex
Full-suspension mountain eBike with switchable torque/cadence sensing and a removable 720Wh LG battery
Engwe O20 Boost
The comfort-and-range pick. A fuller-size, planted ride with a big 720 Wh battery and a 75 Nm torque sensor that flatters your pedalling. It folds too, but it is heavier than the Zip, so it suits being your main everyday bike more than something to lug onto trains daily. Choose it for cushion and range over outright portability.
| Spec | Cyrusher Flex | Engwe O20 Boost |
|---|---|---|
| Best UK price | £1,399 | £1,099 £300 cheaper |
| RRP | £1,799 | £1,199 |
| Delivery | Delivery: Free (UK) | Delivery: Free (UK) |
| Availability at last check | In stock at last check — 30 Sep 2026 | In stock at last check — 30 Sep 2026 |
| Motor brand & type | Cyrusher Hub | Engwe Hub |
| Motor torque | 87 Nm +12 Nm | 75 Nm |
| Battery capacity | 720 Wh | 720 Wh Same |
| Voltage · amp-hours | 48 V · 15 Ah | 48 V · 15 Ah |
| Total weight | 31 kg | 25 kg 6 kg lighter |
| Frame type | High Step | Step Through |
| Release | July 2025 — 1 year, 2 months on market | June 2026 — 3 months on market |
| Tyre size | 27.5 x 2.6 | 20 x 2.125 urban hybrid (anti-puncture) |
| Gears | Shimano 8-speed | Shimano Altus 8-speed (RD-M310) |
| Brakes | Logan fully hydraulic disc, 180mm front + rear | Hydraulic disc, double piston |
| Suspension | Full suspension - front fork + rear shock | Front hydraulic, 50mm travel, adjustable lockout |
| Frame | 6061 aluminium alloy with internal battery | 6061 aluminium alloy, step-through, folding |
| Battery | 48V 15Ah LG cells (720Wh), removable | 48V 15Ah 720Wh, 21700 LG cells, with BMS |
| Charger | 48V 2.0A | 54.6V 4A |
| Max load | 158 kg (350 lbs) | 150 kg |
| Top speed | 25 km/h assisted | 25 km/h (UK EPAC) |
| Range | Up to 95 km | Up to 141 km (PAS1) |
| Display | Left-mount colour smart computer | — |
| Sensor | Torque + cadence (switchable) | — |
| Pedal assist | — | 5 levels, torque sensor |
| Certification | — | CE EN15194 (TUV) |
| Colours | — | Soft Purple, Graphite Gray, Dusty Blue |
| App | — | ENGWE app (Bluetooth) |
| Frame material | — | 6061 aluminium alloy, internal battery, step-through |
| Rider height | — | 152–189 cm |
| Folding | No | Yes |
| Mobile app | No | Yes |
| Cadence sensor | Yes | No |
| Torque & cadence sensor | Yes | No |
| Dual suspension | Yes | No |
| Rear suspension | Yes | No |
| Brake lights | Yes | No |
| Rear rack | No | Yes |
| Higher-speed modes for permitted use | No | Yes |
Cyrusher Flex highlights
Engwe O20 Boost highlights
Frequently asked questions
Which has more torque, Cyrusher Flex or Engwe O20 Boost?
The Cyrusher Flex has more torque at 87 Nm, compared to 75 Nm on the Engwe O20 Boost.
Which has the bigger battery, Cyrusher Flex or Engwe O20 Boost?
Both use a 720 Wh battery.
Which is lighter, Cyrusher Flex or Engwe O20 Boost?
The Engwe O20 Boost is lighter at 25 kg, compared to 31 kg on the Cyrusher Flex.
Which is cheaper, Cyrusher Flex or Engwe O20 Boost?
The Engwe O20 Boost is cheaper at £1,099, compared to £1,399 for the Cyrusher Flex.
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