CYCPLUS Tiny Electric Bike Pump AS2Pro, 120g, Aluminum Alloy Shell, Black

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.

I really love this little pump! I use it as a backup inflation solution on my Canyon Speedmax triathlon bike with tubeless tires, and it fits perfectly in the bike’s frame-integrated toolbox—a major win for space-saving. The connection to a Presta valve is seamless: just push it on—no twisting, no fuss—and it forms a nice, tight seal. The electronic screen version is well worth the slight price increase, offering easy controls and accurate PSI readouts so you know exactly where your pressure is, with not much of an increase in size and weight. That peace of mind alone is a huge bonus. Yes, it’s pretty loud (especially indoors), but it fills quickly, especially up to the 60-65 PSI range I use for my tubeless tires. It can take a little longer getting up to 100 PSI for my clinchers, but for a pump this small, that's expected. I personally use this for emergency roadside inflation only. Day-to-day, I rely on the larger Cycplus "Electric Air Compressor Portable Bicycle Pump Car Tire Inflator" at home. But the beauty of this model is that I no longer need to carry CO2 cartridges or adapters. (Okay—full honesty: I still carry CO2 during Ironman races because I'm overly cautious. But that's me, this pump could be your only solution.) In short: compact, capable, and incredibly convenient. This little device makes bike prep and packout simpler and lighter—what more could you want?

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.

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.

Excellent product and significant upgrade from manual hand pumps. Easy to carry, easy to use, accurate pressure, and fast.

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.

It's incredible, but this little pump WORKS! A real game changer, and such joy to get rid of my CO2 cartridges, a system that was always spotty for me.

First off, how cool is it that this is even an option? A palm sized pump that can be used a few times on one charge, what? Pros: small, easy to charge via usbc, accurate, auto off, easy to read display, just 3 buttons, remembers your last tire pressure. Cons: ridiculously small buttons, have to put on a silicone cover, you're supposed to put it in a waterproof bag. Summary: this thing is cool. Just got home from a 2 day Moab trip and my buddy and I both used it. We might even stop bringing a pressure gauge in the future. It works. It's loud. But it's easy to jam on a valve and even if the display is facing away from you, you can trust it to stop at the pressure you selected. But with slightly thicker gloves on (winter riding), it's not easy to push the buttons. They're just too tiny and often facing away from you. I probably just need to get used to it, but it seems like an easy fix to make the buttons tactile or bigger. The other weird thing is how they added a cover and ask you to put it in a bag? Is there no way to make it water resistant? I think in a year or so this pump will be ready for prime time. If you need to replace a pump, it will work for you, but if you're going to pay for a $100ish pump, maybe wait until it's refined.

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.

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.

Die kleine elektrische Fahrradpumpe hat mich komplett überzeugt. Trotz der kompakten Größe bringt sie ordentlich Leistung und pumpt die Reifen schnell und zuverlässig auf. Die Bedienung ist einfach der Akku hält gut und das Display ist klar lesbar. Ideal für unterwegs und nimmt kaum Platz weg. Für jeden der eine leichte und starke Pumpe für das Fahrrad sucht ist das eine klare Empfehlung. Fünf Sterne.