Built for UK roadside top-ups
Carry it for wet commutes, winter club rides, audax days, weekend gravel routes and emergency car-tyre top-ups after a repair (not from empty).
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Carry it for wet commutes, winter club rides, audax days, weekend gravel routes and emergency car-tyre top-ups after a repair (not from empty).
CO2 is fast but single-use and awkward in the cold. A2S is rechargeable, reusable and displays target PSI before auto-stop.
Works with road, gravel, hybrid, e-bike and commuter valves so one compact inflator can cover most bikes in the household.
Preset from 0-120 PSI with +/- 1 PSI measurement accuracy and auto-stop to help prevent over-inflation.

Prices checked 8 May 2026. Prices may vary.
| Retailer | Price | Delivery | Warranty |
|---|---|---|---|
| CYCLAMI UK | GBP 69.85 | Free | 12 months |
| Amazon UK | GBP 109.99 | GBP 4.99 | 12 months |
| eBay estimate | GBP 129.79 | Varies | Seller dependent |
| High Street RRP | GBP 140.79 | N/A | Varies |
5.00 out of 5 based on 11 reviews.
Reviews collected from another provider. Original customer wording is shown.
Awesome, small compact bike pump! Preset to the desired tire pressure and it does the job and fast charging too!
Review collected from another providerThis is super small and portable—I can easily carry it in my pocket or bag. Works well, and I love that it’s rechargeable via USB-C. The auto-stop function is a nice touch, so I don’t have to monitor it constantly. It takes a few minutes to inflate a tire, but it gets the job done without the hassle of a manual pump.
Review collected from another providerI just loved it. Very compact and easy to carry. I highly recommend it !!
Review collected from another providerPage 1 of 4
Yes. The A2S supports Presta/French and Schrader/American bicycle valves. The matching adapters are included, so you do not need to buy them separately.
Yes. Set the required pressure on the digital display and the A2S stops automatically when it reaches that target. Always choose a pressure within the limits stated by your tyre and rim manufacturers.
Inflation capacity varies with tyre volume, starting pressure, target pressure and temperature, so we do not state one fixed tyre count. For dependable roadside use, fully charge the pump before longer rides.
The pump measures 73.6 x 45 x 28.6 mm and weighs 136 g without accessories. It fits many saddle bags and jersey pockets, but storage sizes vary, so compare these dimensions with your own setup.
The pump can become warm during inflation. If HOT appears, its over-temperature protection has activated and the pump will stop. Avoid touching the outlet immediately after use, and allow the pump to cool before restarting or storing it.
The CYCLAMI A2S includes a 12-month warranty. For warranty enquiries or product support, contact [email protected].
Air transport is subject to each airline and route. Check with the airline before travelling. The battery is 2 x 500 mAh / 7.4 V.
Using the Type-C charging port with 5V 1.5A input, a full charge takes approximately 45 minutes.