We recommend the CYCPLUS AS2 Pro Max to road and gravel riders who want a compact electric pump for a pressure check or roadside flat. Its 205 g body, live pressure display and preset auto-stop make quick top-ups easier to manage than an unmeasured hand pump. The 120 PSI ceiling covers common high-pressure needs, while the included hose is essential above 100 PSI and for resin valves.
Where it fits.
What stands out
- The 81 × 60 × 32 mm, 205 g pump body is easy to pack as a backup.
- An integrated display shows pressure and battery level, with an adjustable target and automatic shutoff.
- The nozzle supports Presta and Schrader setups; the box includes a hose, Presta converter and ball needle.
- USB-C charging, a silicone case and a splashproof pouch make a useful portable kit.
Before you buy
- The manual’s full-charge reference gives three 29 × 2.2-inch tire inflations from 0 to 50 PSI, each taking about 130–140 seconds; treat those figures as manufacturer data, not Bike Tested measurements.
- The manual calls for the hose above 100 PSI and with resin valves; the valve can be hot after inflation, and the pump needs cooling breaks after sustained use.
- The listing describes a splashproof pouch but gives no pump IP rating; CYCPLUS’s limited warranty excludes water ingress.
The useful details.
Manufacturer specifications checked October 22, 2026. Specifications can vary by configuration.
| Maximum pressure | 120 PSI (manufacturer-listed) |
|---|---|
| Gauge and controls | 1 PSI high-precision gauge claim; adjustable target; automatic shutoff; live PSI/BAR and battery display |
| Pump dimensions and weight | 81 × 60 × 32 mm; 205 g (manufacturer-listed) |
| Battery | 600 mAh, 11.1 V, 6.66 Wh |
| Charging | USB-C; the product page advertises a one-hour full charge, while the product graphic and manual list different input ratings |
| Valve compatibility | Presta and Schrader via nozzle adjustment; hose supports compatible Presta, Schrader and ball-valve adapters |
| Included | Inflator, hose, Presta converter, silicone case, splashproof pouch, seal part, charging cable and ball needle |
| Manufacturer inflation reference | Fully charged: 700 × 25 tire, 0–120 PSI in 75–85 sec (4 inflations); 700 × 28, 0–120 PSI in 95–105 sec (3); 29 × 2.2, 0–50 PSI in 130–140 sec (3). The manual labels these experimental reference data. |
Source: Cycplus product page ↗.
A useful shortcut for carrying less
The AS2 Pro Max makes sense as a compact backup for a ride, not as a replacement for every pump in the workshop. CYCPLUS lists a 205 g body measuring 81 × 60 × 32 mm, small enough to keep with a saddlebag or travel kit. Its display shows live pressure and battery level, lets you select PSI or BAR, and stops when the preset target is reached. That is more reassuring than inflating by feel on the shoulder of a road. CYCPLUS lists a maximum of 120 PSI and describes a 1 PSI high-precision gauge; those are manufacturer claims, not Bike Tested calibration results. Set pressure from guidance for the exact tire, rim, rider load and route. Maximum pressure is a limit, not the right target for every ride.
Set up the valve before inflation
The nozzle can be configured for Presta or Schrader. The manual shows the pump ready for Presta with the smaller opening facing outward; for Schrader, reverse the included nozzle insert. CYCPLUS recommends the extension hose for Schrader valves, and the box includes a Presta converter plus a hose with adapters for a ball valve. Use the hose whenever the target is above 100 PSI to reduce air leakage at the nozzle. For a TPU inner tube with a resin valve, the manual says to connect the hose before inflating because direct heat may melt the valve. It also warns that the valve can become hot after a fill. Take the small setup step, keep your hand clear of the hot connection, and use the tire maker’s pressure guidance rather than the pump’s maximum as a target.
Plan for a compact pump’s duty cycle
The manual lists reference fill times and counts from a full battery: a 700 × 25 tire from 0 to 120 PSI in 75–85 seconds, with four inflations; a 700 × 28 tire to the same pressure in 95–105 seconds, with three; and a 29 × 2.2 tire from 0 to 50 PSI in 130–140 seconds, with three. CYCPLUS labels the results experimental reference data, so treat them as a planning guide rather than a guarantee. The pump also shuts down after three minutes of continuous inflation and pauses if it overheats; the manual says to let it cool before continuing. That is reasonable for an occasional roadside fix, but a floor pump remains the easier choice for frequent home inflation or repeated large-volume tires.
Check charging and weather details
CYCPLUS advertises a one-hour USB-C charge. Its product graphic and AS2 Pro Max manual list different input ratings, so confirm your charger and expected charge time with the seller if that detail matters. The included pouch is described as splashproof, but the listing does not give the pump an IP water-resistance rating. Keep the inflator protected from rain and water; the seller’s limited two-year warranty excludes water ingress. The kit includes a silicone case, hose, Presta converter, seal part, cable and ball needle, which makes the package more complete than the pump body alone. Check the current listing for the exact contents and written warranty terms before ordering.
Your questions, answered.
Does the AS2 Pro Max work with Presta and Schrader valves?
Yes. The manual shows the nozzle configured directly for Presta and adjusted for Schrader by reversing the included nozzle insert. CYCPLUS recommends the hose for Schrader; the hose and included converter also support the listed adapters for Presta, Schrader and ball valves. Use the hose above 100 PSI and with resin valves.
Can I inflate a bike tire to 120 PSI with the AS2 Pro Max?
CYCPLUS lists 120 PSI as the pump’s maximum. Choose a pressure recommended for your exact tire, rim and load, and stay within every applicable limit. The manual says to use the hose above 100 PSI; the pump’s maximum is not a universal riding target.
How many tires can it inflate on one charge?
The manufacturer manual gives reference results from a full charge: four 700 × 25 inflations from 0 to 120 PSI, three 700 × 28 inflations to 120 PSI, or three 29 × 2.2 fills from 0 to 50 PSI. CYCPLUS calls these experimental reference data; actual results can vary with conditions and use.
Can I use the AS2 Pro Max in the rain?
The product page describes a splashproof pouch, but does not list an IP water-resistance rating for the pump. The limited warranty excludes water ingress. Keep the pump protected from rain and water, and confirm the current seller guidance before relying on it in wet conditions.
What comes with the AS2 Pro Max?
CYCPLUS lists the inflator, hose, Presta converter, silicone case, splashproof pouch, seal part, charging cable and ball needle. Check the selected listing for the package that will ship with your order.
What is the discount code for the CYCPLUS AS2 Pro Max Tiny E-Pump for Bike?
Yes. Use SEBASTIANBASSOL for 5% off at www.cycplus.com. The listed price is $89.99; with the code it is $85.50 before tax and shipping.
Keep exploring.
- Bike tire pressure: how to find the right PSI
- Explore Cycling technology →
- Cycplus brand directory
- Cycplus offer details