REVIEW – Now that my entire family is fully into biking, we are often on the bike trails in the nature preserve not far from my home, and leaving home with an under-inflated tire is quite possible. Also, if we had to replace a tube while out riding, a conventional air pump would not work. Enter the FLEXTAIL Tiny Tyre Pump Pro ACS.
⬇︎ Jump to summary (pros/cons)
Price: $79.99
Where to buy: FLEXTAIL website
What is it?
The FLEXTAIL Tiny Tyre Pump Pro ACS is a 120PSI Mini Electric Gauge Pump with a Taillight and a built-in 500mAh battery for one night’s riding and inflating a tire. It is suitable for bikes and motorcycles.
What’s included?
- 1 x FLEXTAIL Tiny Tyre Pump Pro ACS
- 1 x USB-C Cable
- 1 x Tailight Adapter
- 1 x Accessory Kit
- 1 x User Manual
Tech specs
Size: 2.0*1.1*2.6 inches（51*29*67 mm）
Weight: 4.4 oz（125g）
Air Pressure: 120 PSI (827 kPa)
Charging Mode: USB Type-C
Battery Capacity: 3.7 Wh
Design and features
The FLEXTAIL Tiny Tyre Pump Pro ACS is a compact and portable electric pump designed specifically for cyclists. It measures 77x53x32mm and weighs 4.59 oz. It has a 450mAh battery built in and uses something called AirVortech technology. According to the manufacturer, it can inflate a 700x25c tire from 0 to 80 PSI in just 50 seconds and can provide up to 120 PSI. The design includes a high-definition LED screen that displays real-time barometric pressure (switchable between PSI and BAR), adjustable units, and remaining battery life. As with most tire inflators, it automatically stops when the desired pressure is reached. There is a built-in USB-C port for charging.
Performance
The FLEXTAIL Tiny Tyre Pump Pro ACS weighs 110 grams and is 77x53x32mm. This small size and light weight make it extremely portable, whether you choose to carry it in your pocket, an accessory bag, or attach it to your bike.
My test results showed that the built-in 450mAh battery was able to pump up a 20×4” fat tire from almost totally deflated to the 27 PSI I wanted, and the battery indicator showed that there was still approximately 50% of the charge remaining. The manufacturer states inflation of a 700x25c tire from 0 to 80 PSI in as little as 50 seconds, with a maximum pressure of 120 PSI.
Once I unboxed the pump, it was easy to figure out how to use it, and I was pleasantly surprised that they included accessories for inflation, other gear like balls, etc. The built-in LED display shows pressure readings, and you can change to the desired type of measurement.
The device recharges quickly via USB-C and fully recharges in about 30 minutes. It can also be used as a taillight, if so desired.
Despite its tiny size, it is louder than I expected, and my other noteworthy negative is that a carrying case for the accessories is not included.
Overall, this is a fantastic addition for any biker, and since carrying it is insignificant, every biker should have one.
Final thoughts
The FLEXTAIL Tiny Tyre Pump Pro ACS is a great addition for any biker looking to ride without worry. It is capable of properly inflating any soft tire or any tube to full pressure.
What I like about the FLEXTAIL Tiny Tyre Pump Pro ACS
- It is compact and lightweight
- It is easy to use
- It is capable of inflating most bike tires and is especially handy in an emergency
- Handy accessories are included
- The option to use it as a taillight
What needs to be improved?
- There is no carry case for the accessories
Price: $79.99
Where to buy: FLEXTAIL website and Amazon
Source: FLEXTAIL provided a free sample for this review. FLEXTAIL did not have a final say on the review and did not preview it before it was published.
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$34.90 (as of May 22, 2025 21:16 GMT -04:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
