CYCPLUS A2S ULTRA ELECTRIC PUMP
The Lightweight King of Inflation.
The Cycplus AS2 Ultra is the most advanced and compact model in the Cycplus lineup, specifically engineered for weight-conscious road and gravel riders. Weighing only 87 grams, it is roughly 30% lighter than the standard Pro model, making it a true "forget it's there" item in your jersey pocket.
Despite its tiny footprint, the AS2 Ultra uses a high-performance brushless motor to reach pressures of up to 120 PSI.It features a built-in digital pressure gauge and an auto-stop function—you simply preset your desired pressure, and the pump handles the rest, ensuring pinpoint accuracy without the guesswork of manual pumping or CO2.
Key Features
Featherlight 87g Build: Crafted from a magnesium alloy casing to minimize weight while maintaining durability and impact resistance.
Precision Digital Display: Features a bright LED screen showing real-time pressure and battery levels, with an accuracy of ±1 PSI.
Smart Auto-Stop: Automatically shuts off once your preset target pressure is reached, preventing over-inflation and saving battery.
Rapid USB-C Charging: Fully recharges in just 25 minutes, one of the fastest charging times for any handheld electronic pump.
Dual Valve Support: Features a simple nozzle design that is compatible with both Presta and Schrader valves without needing extra adapters.
Heat Protection: Includes a signature silicone insulation case to keep the device comfortable to hold during and after rapid inflation.
Technical Specifications
| Feature | Specification |
| Weight | 87 g |
| Max Pressure | 120 PSI |
| Dimensions | 65 x 47.5 x 28 mm |
| Battery | 7.4V 400mAh |
| Inflation Speed | ~2 mins (700x25c to 120 PSI) |
| Endurance | ~2x 700x25c tires to 110 PSI |
| Charging | USB-C (Full in 25 mins) |
✅ Why This IS For You
Minimalist Cyclists: If you currently use CO2 canisters and want a reusable, eco-friendly alternative that is just as light and portable.
Tubeless Road & Gravel Riders: Ideal for those who need precise pressure (e.g., exactly 28 PSI or 85 PSI) to maintain optimal tire performance on varied surfaces.
International Travelers: Unlike CO2 cartridges, this battery-powered pump is completely flight-safe, making it an essential for cycling holidays.
❌ Why This May NOT be for you
MTB & High-Volume Users: The 400mAh battery is optimized for road tires; if you need to inflate multiple large 29x2.4" MTB tires, the larger AS2 Pro Max is a better choice.
Group Ride Mechanics: If you are the designated "support car" for a large group, the 2-3 inflation capacity might run out quickly compared to the AS2 Pro.
Zero-Noise Seekers: Like all high-speed electric mini-pumps, it is audibly loud during operation, which might be a factor for very early morning departures.
BFC Pro Tip
The AS2 Ultra is so small that it can sometimes be tricky to hold steady against a valve for two minutes. We highly recommend using the included extension hose; it reduces the stress on your valve stem and allows you to hold the pump in a more comfortable position while it works. Also, because it's magnesium, it can get warm—always keep that silicone sleeve on for better grip and heat protection!
