Product review: Cycplus AS2 Ultra Minipump
with AS2 Pro , Silca Elettrico and Magicshine Airro comparison (see below)
The Cycplus AS2 Ultra is the first mini e-pump I’ve used that genuinely feels like it belongs in a jersey pocket—so small you forget it’s there. At 87g with a compact body, it’s built around the stuff that actually matters on the roadside: a digital pressure gauge, auto-stop at your target PSI, small & easy to carry. It also charges quickly via USB-C (around an hour).
What it’s like to use the Cycplus AS2 Ultra
My new must-have item in the jersey pocket. Out with CO2, it's been a long time coming. In the real world, this handy Cycplus minicompressor shines because it removes the annoying parts of mid-ride inflation: guessing pressure, overshooting, and fiddling with tiny heads while your hands are cold or sweaty. You set your pressure, hit go, and it stops on its own—so you can focus on getting rolling again. And it's FAST. We also find it's easy for novice riders, much easier to operate and understand than finicky CO2 setups. The gauge isn’t just a “nice to have,” it’s the difference between “good enough to limp home” and “back to proper pressure.” I could get away without a gauge, but with my tubeless setups on my gravel, MTB and road bikes I like to be precise, and the gauge is important to me.
Speed-wise, it’s properly quick for what it is, and the claimed capacity is realistic for typical road/gravel use: the manual says up to 2 tyres to around 110 PSI per charge—more than enough for the majority of puncture scenarios you’ll actually face. Heat management is the one reality check with all tiny electric pumps, and Cycplus leans into practicality here with a heat-resistant silicone case so not hot to the touch and you can slam it back in your pocket right after use and get back on the group.
I’ve had to pull this pump out multiple times and last week filled a friend’s gravel 700x40 tyre three full times before it ran out of charge – and I was not sure exactly how much charge it had on it to start. I found this more than adequate on an average ride, more than satisfied.
Note: if you are set up tubeless, use the hose provided for each use to prevent any tubeless sealant blowback from clogging the internal workings. I’ve seen a few people try and get by not carrying the small 8g hose, not a good gamble. Also, if you use TPU tubes, the pump gets hot and can melt the plastic presta valve on TPUs, so always use the hose. Even if you don't use tubeless or TPU, your friend might, so I would always recommend to carry (and use) the hose provided.
Another note: use the waterproof bag provided to store when not in use to keep sweat & moisture from slowly corroding the internal electronics.
Reliability: We've sold hundreds of these Cycplus pumps over the last year and can count on one hand the returns/warranty claims. So far, the Cycplus models are some of the most reliable electronic products we've experienced in 12 years of retail with the lowest defect rate, far lower than the .5-1% that most manufacturers budget into their product plans.
AS2 Ultra vs AS2 Pro
The Cycplus AS2 Pro is still a strong alternative—and in many ways it set the bar—but it’s clearly the “slightly bigger workhorse” next to the Ultra. The Pro is heavier at 120g and a touch larger (70 × 49 × 28 mm), while the Ultra is smaller (65 × 47.5 × 28 mm) and feels noticeably more pocket-friendly.
Battery-wise, the Pro has a 420 mAh (7.4V) battery, while the Ultra runs a 400 mAh—so yes, the Pro has a slight edge on paper, but the Ultra still targets that “two road tyres to proper pressure” sweet spot in exchange for being meaningfully easier to carry every ride. Bottom line on the Pro: if you like the Cycplus idea and want a proven, slightly more “robust-feeling” option (and you don’t mind the extra bulk), the AS2 Pro remains an excellent buy—it’s just that the Ultra delivers the same experience in a more “always with you” package.
Other Good Options: Silca & Magicshine Airro
Silca is known for engineering and high quality, and the video they did on these pumps is impressive, made me want one. But… they’re heavy with aluminium bodies, and a little louder than the others. The sharp/hard edges might be something you’d think twice about before putting in your jersey pocket. They have two options split cleanly: the Elettrico Micro is impressively compact but caps out with an auto-cutoff at 72 PSI and no gauge – so not good for non-tubeless road bikes and you can’t be precise with pressure. It’s bigger brother, the Elettrico Ultimate, is the powerhouse with a settable 3–100 PSI gauge (and more “floor-pump-ish” ambition) at the cost of being much heavier/bigger (often listed ~222g). The Silca offerings feel “just off” the mainstream pump narrative – one is smaller but lacks the gauge, and the bigger one is a little too large for most riders to conveniently carry. Silcas models are also more expensive, a good 15-25% more so, compared to comparable models.
The Magicshine AIRRO on the other hand, is a good-value alternative with a display and 120 PSI max, but it’s also heavier than the Cycplus at about 145g, so it doesn’t disappear in a pocket the way the Ultra does. If you don’t mind a few extra grams, it’s also a bigger battery, so for frequent users this might be a better option. It looks cool, though, with the see-thru window.
Recommendation
If your priority is the best carry-every-ride blend of weight, size, gauge + auto-stop convenience, and real-world usefulness, the Cycplus AS2 Ultra sits at the top of the leaderboard. The AS2 Pro is a close second—still excellent, just bulkier—while Silca (Micro/Ultimate) and Magicshine are solid alternatives that don’t quite match the Ultra’s “no excuses, always with you” advantage.
