Cyrusher Flex vs Cyrusher Sonder
Torque, battery, weight, pricing and features — side by side.
Each on its own: Cyrusher Flex specs, UK price and stock · Cyrusher Sonder 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
Compact 20in commuter with a torque sensor, 480Wh battery and a 22.1kg kerb weight
View details
£1,499
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)
Out of stock at last check · checked
Which should you choose?
Choose the Cyrusher Flex if…
…it costs less (£100 cheaper), has more torque (+47 Nm) and carries a bigger battery (+240 Wh).
Choose the Cyrusher Sonder if…
…it is lighter (8.9 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
Cyrusher Sonder
Compact 20in commuter with a torque sensor, 480Wh battery and a 22.1kg kerb weight
| Spec | Cyrusher Flex | Cyrusher Sonder |
|---|---|---|
| Best UK price | £1,399 £100 cheaper | £1,499 |
| RRP | £1,799 | £1,499 |
| Delivery | Delivery: Free (UK) | Delivery: Free (UK) |
| Availability at last check | In stock at last check — 29 Sep 2026 | Out of stock at last check — 29 Sep 2026 |
| Motor brand & type | Cyrusher Hub | Cyrusher Hub |
| Motor torque | 87 Nm +47 Nm | 40 Nm |
| Battery capacity | 720 Wh +240 Wh | 480 Wh |
| Voltage · amp-hours | 48 V · 15 Ah | 48 V · 10 Ah |
| Total weight | 31 kg | 22.1 kg 8.9 kg lighter |
| Frame type | High Step | Compact |
| Release | July 2025 — 1 year, 2 months on market | 10 February 2025 — 1 year, 7 months on market |
| Tyre size | 27.5 x 2.6 | Chaoyang 20 x 2.0in puncture-proof |
| Gears | Shimano 8-speed | — |
| Brakes | Logan fully hydraulic disc, 180mm front + rear | Hydraulic disc |
| Suspension | Full suspension - front fork + rear shock | — |
| Frame | 6061 aluminium alloy with internal battery | — |
| Battery | 48V 15Ah LG cells (720Wh), removable | — |
| Charger | 48V 2.0A | 54.6V 2.0A |
| Max load | 158 kg (350 lbs) | 120 kg |
| Top speed | 25 km/h assisted | — |
| Range | Up to 95 km | — |
| Display | Left-mount colour smart computer | Colour smart display |
| Sensor | Torque + cadence (switchable) | — |
| Frame material | — | 6061 aluminium alloy with internal battery |
| Top speed (stated) | — | 24 km/h |
| Range (stated) | — | Up to 85 km |
| Weight without battery | — | 19.1 kg |
| Folding | No | Yes |
| Cadence sensor | Yes | No |
| Torque & cadence sensor | Yes | No |
| Dual suspension | Yes | No |
| Front suspension | Yes | No |
| Rear suspension | Yes | No |
| Brake lights | Yes | No |
| Hydraulic brakes | Yes | No |
Cyrusher Flex highlights
Cyrusher Sonder highlights
Frequently asked questions
Which has more torque, Cyrusher Flex or Cyrusher Sonder?
The Cyrusher Flex has more torque at 87 Nm, compared to 40 Nm on the Cyrusher Sonder.
Which has the bigger battery, Cyrusher Flex or Cyrusher Sonder?
The Cyrusher Flex has a larger battery at 720 Wh, versus 480 Wh on the Cyrusher Sonder.
Which is lighter, Cyrusher Flex or Cyrusher Sonder?
The Cyrusher Sonder is lighter at 22.1 kg, compared to 31 kg on the Cyrusher Flex.
Which is cheaper, Cyrusher Flex or Cyrusher Sonder?
The Cyrusher Flex is cheaper at £1,399, compared to £1,499 for the Cyrusher Sonder.
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