CYCPLUS AS2 PRO Tiny Bicycle Pump with Gauge - Portable 120 PSI Pump

In this review of the CYCPLUS AS2 PRO Tiny Bicycle Pump with Gauge the bottom line is simple: this is a pocketable, fast electric pump built for cyclists who want a reliable emergency inflator without carrying bulk. It is best for riders of road, mountain, city and e-bike setups who prioritize compactness and speed over shop-grade accuracy. The pump's main selling point is its combination of true portability at about 4.23 oz and surprisingly powerful inflation up to 120 PSI, making it a practical upgrade from CO2 cartridges or hand pumps for quick roadside top-ups.

Key Features

• Pocket size and weight: At 4.23 oz and roughly 2.75 x 1.10 x 1.92 in it is small enough to fit in a pocket or attach to a backpack for everyday carry.
• High maximum pressure: Capable of reaching up to 120 PSI, so it can handle typical road, MTB and e-bike tyre pressures without struggling.
• Fast inflation times: The AS2 PRO refills a 700 x 25C tyre from 0 to 80 PSI in about 52 seconds and can reach 0 to 120 PSI in roughly 120 seconds, saving time on the road.
• Auto shut-off and LED gauge: A large LED screen displays real-time pressure and stops automatically when a preset pressure is reached, with 1 PSI measurement increments.
• Quick charging and battery life: A full charge takes around 30 minutes and is rated to inflate at least two 700 x 25C tyres from 0 to 110 PSI on a single charge.
• Valve compatibility and accessories: Works with both Presta and Schrader valves and ships with a flexible hose, Presta adapter, ball needle and silicone case for versatile use.

Who It's For

The AS2 PRO suits road cyclists, commuters and mountain bikers who want a lightweight, rechargeable inflator that replaces CO2 canisters and reduces reliance on a floor pump between rides. Its fast inflation and 120 PSI top end make it especially useful for riders who need a compact tool that can quickly restore tyre pressure after a puncture or long descent.

It may not be ideal for users who require lab-grade pressure accuracy for racing calibration, since some customers report the unit reads higher than actual pressure. Also, riders who prefer fully silent operation should be aware that compact electric pumps can produce noticeable noise compared with hand pumps.

Pros & Cons

Pros

• Extremely compact and lightweight, easy to carry in a pocket or pack.
• Fast inflation speeds that reach common road pressures in about two minutes.
• Auto shut-off with a clear LED gauge simplifies setting target pressure.
• Comes with useful accessories including a hose, Presta adapter and storage bag.

Cons

• Some users report the gauge reads several PSI higher than actual pressure, so professional accuracy may be limited.
• Noise level is noticeable during operation compared with manual pumps.

Specifications

Weight	4.23 oz (120 g)
Size	2.75 x 1.10 x 1.92 in
Maximum pressure	120 PSI
Inflation time	700 x 25C 0-80 PSI ~52 s; 0-120 PSI ~120 s
Charge time	About 30 minutes
Included accessories	Flexible hose, Presta adapter, ball needle, silicone case, storage bag, USB cable
Valve compatibility	Presta and Schrader

Our Verdict

The CYCPLUS AS2 PRO is a smart choice for cyclists who want a genuinely portable electric pump that delivers fast inflation and a simple auto stop feature. Its light weight and quick charge make it excellent value for commuters and weekend riders, though anyone needing laboratory-accurate pressure readings should verify with a trusted gauge. Overall it mixes convenience, speed and useful accessories into a compact package that will solve most roadside inflation needs.

Frequently Asked Questions

How many tyres can it inflate on a single charge?
With a full charge it can inflate at least two 700 x 25C tyres from 0 to about 110 PSI.

Does it support both Presta and Schrader valves?
Yes, it supports both valve types and includes a Presta adapter plus a flexible hose for awkward angles.

Is the pressure reading accurate?
The LED gauge measures in 1 PSI steps, but some users have reported readings several PSI higher than other gauges, so cross-check if exact accuracy is critical.