Fanttik X9 Pro review

The X9 Pro is the lighter, bike-leaning half of Fanttik's pocket range, and the first thing to say plainly is that it is slower than the X8 Apex on a car tire: 4:20 against 3:55 on the same 205/55R16, three runs, median reported. It is also 0.3 lb lighter at 0.9 lb, faster on a road tire at 1:35 to 100 PSI, and it gets 5 tires per charge instead of 7. If your inflation life is mostly bicycles with the occasional car top-up, that trade is worth making. If it is the other way round, buy the X8 and stop reading.

Our standard car test is three timed fills from 28 to 36 PSI on the same mounted 205/55R16, with the median published. The X9 Pro returned 4:20. That places it mid-pack among self-contained pumps — behind the X8 Apex at 3:55, ahead of the Airmoto at 4:35 and well ahead of the Cycplus A8, which takes 6:40 on a car tire because that is not what it is built for. A tool-battery unit will still halve or quarter these times; see best cordless inflators if raw speed is the priority.

Turn to bikes and the ranking changes. On our bike protocol — a 700×25c Presta road tire taken from flat to 100 PSI — the X9 Pro needed 1:35, against 1:50 for the X8 and 1:10 for the Cycplus A8. On a 29×2.4 mountain bike tire brought up to 25 PSI it was done in 0:35, which is genuinely quicker than most people manage with a floor pump and requires no effort at all. Two road tires back to back left the barrel warm but never uncomfortable to hold, which is more than we can say for the Cycplus.

Gauge accuracy came in at ±1.0 PSI against our calibrated reference at 20, 32 and 50 PSI, matching the X8. For a road cyclist the meaningful part is repeatability at pressure: three consecutive fills targeting 100 PSI landed within a PSI of each other, so once you have found the number your tires like, the pump will find it again. That is not universal in this class, as our gauge accuracy testing makes clear.

Noise measured 76 dB at one meter at working pressure, six dB up on the X8 — audible, and noticeably buzzier on a quiet trailside than in a garage. Battery life ran to five complete 28→36 PSI car top-ups from full to empty, or a great many bike fills, since a road tire costs a fraction of the energy a car tire does. In practice we recharged it about once a month riding four or five times a week. USB-C in, no proprietary brick.

At 0.9 lb and roughly the size of a chunky phone, the X9 Pro is the first inflator on our bench we would consider carrying on a ride rather than leaving in a car. It fits a jersey back pocket — snugly — and disappears in a saddle bag or frame bag. The body is metal-shelled with a rubberised grip band, the hose stows in a channel, and the whole thing survives being rattled around in a bag of tools without complaint.

The preset system is the same idea as the X8's but tuned for two wheels: modes for road, MTB, car and ball, each remembering the last pressure you asked it for. The Presta head threads directly onto the valve without an adapter, and the display shows target and live pressure together so you can watch a tubeless tire come up rather than guess. If valve types are new territory, our Presta vs Schrader guide and the step-by-step in how to inflate bike tires cover the technique.

Two irritations. The hose is short, so on a car the unit rests on the ground during a four-minute fill. And the auto-stop is slightly conservative at high pressure: asking for 100 PSI reliably gave us 99 to 100, never over. Being a hair under is the right failure direction, but road riders chasing an exact number should know.

Buy the X9 Pro if bikes are the main job and the car is the occasional one. It is the right pump for a household with two road bikes and a commuter car, for a mountain biker who wants to fine-tune pressures at the trailhead, and for anyone who values the 0.3 lb saving because the pump travels on the bike rather than in it. It sits in our best bike tire inflators ranking and in best inflators for road bikes for those reasons, and it is one of the shortlist in built-in battery inflators.

Skip it if cars are your main use case. Twenty-five seconds per tire does not sound like much until you are doing four of them, and the X8 also gives you two more tires per charge and 6 dB less noise for similar money. Skip it if you want the fastest road-tire fill on the market — the Cycplus A8 does the same 700×25c in 1:10 and is the same weight. Skip it outright if you run a truck, trailer or RV: 65–80 PSI on load-range E rubber is a job for a continuous-duty compressor, not a 0.9 lb pump. And skip it if you need a repairable long-term tool, because like every unit in this class the cell is sealed and non-replaceable.

These two are not a good-and-better pair, they are a fork in the road. The X8 is heavier, faster on cars, longer-lasting per charge and quieter; the X9 is lighter, faster on bikes and easier to carry. Neither is a bad buy, and the money is close enough that use case should decide rather than budget. We ran them head to head in Fanttik X8 vs X9 Pro. Test conditions and equipment are documented on our how we test page.