We recommend the CYCPLUS AS2 Ultra for riders who want a pressure-controlled emergency inflator that takes very little room in a jersey pocket or frame bag. At a manufacturer-listed 87 g and 65 × 47.5 × 28 mm, it is easy to pack; the display, adjustable target and automatic shutoff offer more control than a basic hand pump. Its 400 mAh battery is the defining compromise: CYCPLUS’s manual lists just one 700 × 25 fill or one 700 × 28 fill from 0 to 120 PSI on a full charge. Treat it as a compact roadside backup, keep it charged, and use the included hose above 100 PSI. The US cart accepted the reader code on the $94.99 sale price for this exact variant.
Where it fits.
What stands out
- At 87 g and 65 × 47.5 × 28 mm (manufacturer-listed), the pump is exceptionally easy to carry as a backup.
- The LED screen shows live pressure and battery level; the target adjusts with plus/minus buttons and inflation stops automatically at the set pressure.
- The manual supports direct Presta use, a reversible nozzle insert for Schrader, and an included hose with adapters for Schrader, Presta and ball valves.
- The package includes a silicone case, waterproof bag, hose, Presta converter, ball needle, cable and spare seal part.
Before you buy
- The 400 mAh battery is small. CYCPLUS’s full-charge reference lists one 700 × 25 fill from 0 to 120 PSI in 120–140 seconds, or one 700 × 28 fill in 190–210 seconds; the manual labels these experimental data for reference only.
- CYCPLUS says to use the hose above 100 PSI to prevent leakage. For TPU inner tubes with resin valves, the manual says the hose is required to prevent overheating; the valve may be hot immediately after inflation.
- The manual lists a waterproof bag but does not specify an ingress-protection rating for the pump itself. Keep the inflator protected from water.
The useful details.
Manufacturer specifications checked October 24, 2026. Specifications can vary by configuration.
| Maximum pressure | 120 PSI (manufacturer-listed) |
|---|---|
| Display and controls | LED screen with live pressure and battery level; adjustable target; PSI/BAR selection; automatic shutoff at target |
| Dimensions | 65 × 47.5 × 28 mm (manufacturer-listed) |
| Weight | 87 g (manufacturer-listed) |
| Battery | 400 mAh, 7.4 V, 2.96 Wh (manufacturer-listed) |
| Charging | USB Type-C; manual lists 5 V / 2 A or 7 V / 1.5 A input |
| Inflation current | 2.5–7.5 A (manual) |
| Valve compatibility | Presta-ready nozzle; reverse the included insert for Schrader. Hose and supplied adapters support Presta, Schrader and ball valves. |
| Included | Inflator, silicone case, waterproof bag, spare seal part, hose, ball needle, Presta valve converter and charging cable (manual) |
| Full-charge reference | 700 × 25: one 0–120 PSI fill in 120–140 sec; 700 × 28: one 0–120 PSI fill in 190–210 sec. Manufacturer experimental reference data, not Bike Tested measurements. |
Source: Cycplus product page ↗.
A pump that can stay in the pocket
The AS2 Ultra’s case is its strongest practical argument. CYCPLUS lists a 65 × 47.5 × 28 mm body at 87 g, small enough to keep in a jersey pocket or a compact repair kit. It is a convenience-first backup for a roadside flat, not a reason to retire a floor pump for routine home inflation. The official 2026 Team Bahrain Victorious page also presents the model as newly launched kit for the team; those are manufacturer claims, not independent test results.
Set a pressure instead of guessing
The manual shows an LED display for current pressure and battery level. Riders can switch PSI and BAR, set a target with the plus and minus buttons, then start inflation; the pump automatically stops when it reaches that target. The set pressure remains on screen for three seconds before the display returns to the live reading. A readable gauge and cutoff are useful for roadside top-ups, provided the target comes from the tire and rim makers rather than the pump’s maximum.
Plan around one high-pressure fill
The listed 120 PSI ceiling is not a promise of repeated full-pressure inflations. On a full charge, CYCPLUS’s English manual gives one 700 × 25 tire fill from 0 to 120 PSI in 120–140 seconds, and one 700 × 28 fill in 190–210 seconds. It also lists three 700 × 25 fills from 0 to 80 PSI and two 700 × 28 fills at that same pressure. The manual calls these experimental reference data only, so use them as a guide to the battery’s limits rather than a guarantee for every tire or condition.
The hose matters at higher pressure
The nozzle is ready for Presta, and the manual shows how to reverse its insert for Schrader. It recommends the hose for Schrader setups and requires it above 100 PSI to prevent leakage at the nozzle. For TPU inner tubes with resin valves, CYCPLUS warns that the hose is needed to avoid overheating; a valve can also be hot just after use. The box includes a hose, a Presta converter, a ball needle, a silicone case, a waterproof bag, a cable and a spare seal part.
A code checked against the sale price
The US product page listed the single AS2 Ultra variant at $94.99, down from $119.00, on October 24, 2026. In the cart, SEBASTIANBASSOL applied another $4.74 to that $94.99 sale price, leaving a $90.25 item subtotal before shipping and tax. The result is specific to variant 45372870623390 (SKU AS2 Ultra); the cart was cleared without entering an address or placing an order.
Your questions, answered.
How many bicycle tires can the AS2 Ultra inflate on a charge?
CYCPLUS’s manual lists, on a full charge, three 700 × 25 fills from 0 to 80 PSI, two from 0 to 110 PSI, and one from 0 to 120 PSI. For 700 × 28 tires it lists two from 0 to 80 PSI and one each at 0–110 and 0–120 PSI. A 29 × 2.2 tire is listed for two 0–40 PSI fills or one 0–50 PSI fill. The manufacturer labels these experimental reference data, not guarantees.
Can the AS2 Ultra inflate both Presta and Schrader valves?
Yes. The manual shows the nozzle set for Presta by default and reversed for Schrader. It recommends the hose for Schrader, and says to use the hose above 100 PSI. For TPU inner tubes with resin valves, it warns that the hose is required to prevent overheating.
Is 120 PSI the right pressure for my tire?
Not automatically. CYCPLUS lists 120 PSI as the pump’s maximum. Use pressure guidance for your exact tire, rim, load and riding conditions, and stay within the lowest applicable component limit.
What comes with the AS2 Ultra?
CYCPLUS’s manual lists the inflator, silicone case, waterproof bag, spare seal part, hose, ball needle, Presta valve converter and charging cable. Check the current listing for the package attached to your order.
Did SEBASTIANBASSOL work on the AS2 Ultra?
Yes. On October 24, 2026, the US cart accepted the 5% code on the exact AS2 Ultra variant, reducing its $94.99 sale price by $4.74 to $90.25 before shipping and tax. No address was entered and no order was placed.
What is the discount code for the CYCPLUS AS2 Ultra Tiny E-Pump for Bike?
Yes. Use SEBASTIANBASSOL for 5% off at www.cycplus.com. The listed price is $94.99; with the code it is $90.25 before tax and shipping.
Keep exploring.
- Compare the Ultra’s 87 g carry weight with the larger AS2 Pro Max and its higher manufacturer-stated full-charge fill counts. CYCPLUS AS2 Pro Max Tiny E-Pump for Bike: review →
- Bike tire pressure: how to find the right PSI
- Presta vs Schrader valves: identify and inflate yours
- Explore Cycling technology →
- Cycplus brand directory
- Cycplus offer details