Tiny Electric Bike Pump AS2Pro, 120g, Aluminum Alloy Shell, Black | Mini pocket size, Max 120PSI, Fast inflation, Auto stop, pressure gauge, Presta and Schrader Valve, for MTB, and Road Bike

Easy to use, compact, and great customer service. MyAS2 PRO Tiny died after almost 1 year of occasional use with a persistent EE2 error. I reported it via email to the manufacturer using the OEM website late on a Monday night. I woke up Tuesday to troubleshooting instructions and a request for a video of what it was doing. I replied late Tuesday and woke up Wednesday with emails saying it wasn't repairable and confirming replacement under the OEM 2-yr warranty. The new one arrived Friday! Less than 90 hours from first report to replacement. Outstanding! After the replacement, I ordered a second one as a gift to a new cyclist. Oh, the gauge is accurate compared to a Silca gauge and the inflation speed is "plenty fast enough." The batteries recharge quick too.

This Cycplus bike pump checks all the boxes: It's very compact and easy to carry ... It's extremely easy to use ... The battery life is excellent ... And it inflates bike tires to a set pressure very quickly! I'm very satisfied with the quality and the overall design of the pump ... Nice device for any bike rider!

I wasn't sure what to expect with this, as it seemed like a gimmicky thing that would never work as it was advertised. However, I loathe using mini pumps, and C02 pumps are a pain to carry and not always advised for certain setups. I've now had this thing for a bit and have used it to top off my tires, inflate new tubes, and also to seat tubeless tires on tubeless rims on four tires now, without issues. Overall, the size if this thing is surprisingly small, and it packs in any of my bike bags easily. It feels sturdy in the hand and like it could take a few drops on a hard floor. Installation for inflating tires with Presta valves can be a little tricky, as you've got to seat it down pretty hard on the valve to seal the opening. Also, do not try to seat your tubeless tires with the valve core removed. When I tried that, air just kept escaping. Putting the valve core back in allowed me to get the magic ping as I inflated the tires. No need for an air compressor! And I would say the complaints of the noise level on this thing are a bit exaggerated. Sure, it's not the most pleasant sound, but definitely better than an air compressor. I have not yet verified the accuracy of the built-in gauge, but it is super handy to have a gauge on-hand that is built into the pump. I will say that I was able to inflate two 2.3" 650b tires with tubes, then later seat those tires when converted to tubeless before I had to charge it again. For a ride where you might need to top off your tires, and worst case re-inflate after a patch or tube change, it should be more than adequate. My only complaint is the buttons and placement of the screen. As someone with CMC joint arthritis, pushing the buttons in or holding them down to pump tires is a painful and awkward affair. The screen can be hard to see depending on your vantage point, but I guess there is not really a better place to put it where it would work ambidextrously. Overall, this was a worthwhile purchase and I feel super happy it works to seat tubeless tires.

Comes with everything you need, and a couple of extras. Love the compactness. Manual is micro-print, but even my old eyes figured it out. Most off, it works as advertised. Great.

I’ve been using this pump regularly for months. I use it every day to top up my tubeless 700x19 presta tires before riding as seen in the video. It’s small and carries nicely in my jersey pocket, is relatively light, and well made. There’s more than enough battery to inflate the tires a couple of times. It charges quickly so I top up the tires, put it back on the charger, finish getting ready to ride (5-10 minutes), and then put the fully charged pump in my jersey pocket. I also use it to top up my motorcycle tires. It can add ~3 psi in about 2 minutes into a 195/55-17. I don’t rely on it to reinflate that tire; I carry a 12V pump that runs off the motorcycle battery for that. While it can get hot when running for a minute or so, the included form fitting cover buffers the heat and stays on the unit all the time. UPDATE: April 18, 2026: The pump indicates it's fully charged but displays "E1" when I turn it on...and doesn't operate. It had a 2 year warranty and I've sent a warranty claim to Cycplus. I'll update this review again when I get a response. Regardless of response from Cycplus, I've dropped my star rating to 3 stars as the pump only worked for a year. UPDATE: April 23, 2026: CyclPlus customer support was very responsive, asked for a video to show the symptom, and next day initiated shipment of a replacement without requiring return of the defective product. While I'm disappointed the product in failed after one year, the customer support and warranty replacement was outstanding.

This handy pocket size air pump is a lifesaver. I had a low-pressure tire and had this pump with me. Filled my tire to 22 psi in less than 1 minute. Great little invention. Great emergency tire pump.

As often noted, this type of pump is noisy and capable of only a small number of full inflation cycles with larger or higher pressure tires. I run 40-50mm gravel tires at 35-45 psi on both analogue and pedal assist e-bikes that I usually fill with a floor pump or garage compressor first and only use the mini-pump for topping off before a ride or for rare flats during a ride. The gauge is still accurate after many cycles and the pump seems to be running like new after a year of use. I still have mini hand pumps on the bikes but my 71 years-old arms and back appreciate having the option to exercise or not.

Every cyclist eventually ends up in the same situation: low tire pressure right before a ride, a slow leak mid-week, or that annoying “it feels a little soft but maybe it’s fine.” That’s exactly where the CYCPLUS AS2 PRO becomes a game changer. This pump is shockingly small, yet it delivers the kind of convenience you don’t fully appreciate until you’ve used it a few times. It’s basically a pressure assistant you can keep in your jersey pocket, saddle bag, or travel kit — and it makes inflation and top-offs effortless. ⸻ ✅ Pros 1) Truly tiny, truly portable The biggest selling point is how compact this thing is. It’s not “small for an electric pump” — it’s actually pocketable. Perfect for: • saddle bags • tool kits • jersey pockets (depending on size) • travel + bike case setups For cyclists who like being prepared, this is one of those why didn’t I buy it sooner tools. 2) Built-in pressure gauge + Auto Stop = accurate and stress-free This is where the AS2 PRO feels premium. You set your PSI, press start, and it stops automatically — no guessing, no over-inflating. It’s ideal for road riders who are picky about pressure consistency, and for MTB riders who want repeatable settings. 3) Fast enough for real-world use Is it as fast as a full-size floor pump? Of course not. But for what it is, it’s impressively quick: • topping off road tires is fast and easy • MTB tires take longer, but still totally manageable • it’s perfect for “get me ready to ride” situations 4) Works with Presta and Schrader Major win. No complicated setup, and it’s compatible with: • road bikes • MTBs • e-bikes • commuter bikes It’s also great if you have multiple bikes at home. 5) Great for travel and race days This is a race bag essential. Especially if you travel often, or do events where you want control over tire pressure without relying on someone else’s pump. You can land, assemble the bike, set the exact PSI, and roll out. ⸻ ⚠️ Cons 1) Not a replacement for a floor pump This is a convenience pump, not a workshop tool. It’s perfect for topping off and emergency use, but if you’re inflating totally flat tires every day, a floor pump is still king. 2) Battery planning matters You’ll want to keep it charged, especially if: • you run high PSI • you inflate multiple tires • you use it for larger-volume tires (MTB/e-bike) It’s not a flaw — just normal for compact electric devices. 3) It can get warm during longer inflations If you inflate from very low pressure to high pressure, you’ll notice some heat build-up. Not alarming, but worth mentioning. ⸻ Wrap Up: Is the CYCPLUS AS2 PRO Worth It? If you cycle regularly — especially road, MTB, or e-bike — the CYCPLUS AS2 PRO is one of those tools that instantly improves your routine. It’s accurate, portable, easy to use, and the auto-stop feature makes it feel smarter than a typical mini pump. This isn’t just a gadget. It’s a practical upgrade that saves time, improves consistency, and reduces pre-ride friction. Overall: highly recommended for cyclists who value convenience, precision, and portability.

I had to buy a new mini pump as I foolishly left my old pump in my back pocket of my jersey and knackered it in the washing machine 🤣. I am very impressed with this cycplus mini pump. I have used it only a couple of times whilst servicing my road bike - inflated my 700x28 tyres without any issues. It is a bit noisy just like any other mini pump I’ve used but if it gets me out of a tricky situation at the side of the road then that’s nothing to worry about. I read a lot of reviews on the cycplus mini pumps and decided that this one was the best as I think I will get 2.5 inflations out of the pump and I think I made the right choice. After one inflation to 90psi the pump still had loads of power. I like the small bag it comes with in order to protect the pump from rain and sweat.

C'est vraiment incroyablement efficace, petit, facile à utiliser, écran visible, pour faire l'appoint sur un vttae c'est parfait, l'autonomie est parfaite pour mon utilisation. Je recommande vivement

Compatto, potente e comodissimo. Il CYCPLUS AS2 Pro è diventato un accessorio indispensabile nelle mie uscite. È leggerissimo, entra facilmente nella tasca della maglia e gonfia gli pneumatici in pochi istanti con una pressione precisa grazie al display digitale. Perfetto sia in caso di foratura che per un rapido controllo prima di partire. Unico piccolo difetto: durante l’utilizzo prolungato tende a scaldarsi, ma è normale per dispositivi di queste dimensioni. Nel complesso è un prodotto che consiglio senza esitazioni a chi pratica ciclismo su strada o gravel.

Works well, small palzage. Nice design

Perfect pump that fits in your jersey. No need to carry CO2 anymore. Very easy to use and the digital readout lets you know when you are at the desired pressure.