87 grams. An electric pump.

The CYCPLUS AS2 Ultra delivers automatic inflation and accurate pressure control in an exceptionally light 87 g package.

According to CYCPLUS, it is the world's lightest electric bicycle pump with a pressure display. It is designed for cyclists who count every gram but still want the convenience of an electric pump.

Set the target pressure, start the pump and follow the pressure in real time. The AS2 Ultra stops automatically when the selected pressure is reached.

Built for racing and lightweight setups

The AS2 Ultra is small enough for a jersey pocket, saddle bag or compact repair kit. Its magnesium alloy body keeps the weight extremely low while providing a premium and durable construction.

It is an ideal choice for:

• Road racing

• Triathlon

• Gravel racing

• Lightweight bikepacking

• Fast training rides

• Cyclists replacing CO2 cartridges

• Minimalist emergency repair kits

Unlike a single-use CO2 cartridge, the AS2 Ultra is rechargeable and allows the pressure to be monitored during inflation.

Up to 120 PSI

Despite its compact size, the AS2 Ultra reaches a maximum pressure of 120 PSI, approximately 8.3 bar.

The display shows the pressure in PSI or bar. The automatic stop function switches the pump off when the selected pressure has been reached, helping you achieve consistent tyre pressure without relying on guesswork.

USB-C charging

The built-in 400 mAh, 7.4 V battery charges through USB-C in approximately 25 minutes.

The brushless motor provides strong inflation performance for road, gravel and selected MTB tyres while keeping the pump compact and lightweight.

Presta and Schrader compatible

The AS2 Ultra supports both Presta and Schrader valves. The included extension hose makes it easier to reach the valve and reduces heat transfer between the pump and valve.

Always use the extension hose with plastic or resin TPU tube valves.

Key features

• Exceptionally low weight of 87 g

• Maximum pressure of 120 PSI, approximately 8.3 bar

• Real-time digital pressure display

• Automatic stop at the selected pressure

• PSI and bar pressure units

• Magnesium alloy body

• Brushless motor

• Presta and Schrader compatibility

• USB-C charging

• Charging time of approximately 25 minutes

• Silicone heat protection sleeve

• Protective splash-resistant pouch

Manufacturer performance figures

• 700 x 25C, 0 to 80 PSI: approximately 50 to 60 seconds, up to 3 tyres

• 700 x 25C, 0 to 110 PSI: approximately 110 seconds, up to 2 tyres

• 700 x 28C, 0 to 80 PSI: approximately 90 to 100 seconds, up to 2 tyres

• 700 x 45C, 0 to 50 PSI: approximately 110 seconds, up to 2 tyres

• 29 x 2.2 inch, 0 to 30 PSI: approximately 89 seconds, up to 2 tyres

• 29 x 2.2 inch, 30 to 50 PSI: approximately 88 seconds, up to 3 top-ups

Actual performance depends on tyre size, target pressure, ambient temperature and battery charge level.

Technical specifications

• Model: CYCPLUS AS2 Ultra

• Model code: AS2ULTRA

• Maximum pressure: 120 PSI, approximately 8.3 bar

• Weight: 87 g

• Dimensions: 65 x 47.5 x 28 mm

• Battery: 400 mAh, 7.4 V, 2.96 Wh

• Charging connection: USB-C

• Charging time: approximately 25 minutes

• Pressure units: PSI and bar

• Motor: brushless

• Material: magnesium alloy

• Valve compatibility: Presta and Schrader

• GTIN: 6976297861133

Box contents

• CYCPLUS AS2 Ultra electric pump

• Silicone heat protection sleeve

• Protective splash-resistant pouch

• Extension hose

• Presta valve converter

• Ball needle

• Spare seal

• USB-C charging cable

Which CYCPLUS pump should you choose?

Choose the AS2 Ultra when low weight and minimal size are your highest priorities.

Choose the AS2 Pro when you want more battery capacity for general road, gravel and everyday use.

Choose the AS2 Pro Max when you need maximum airflow and battery capacity for larger MTB or gravel tyres.

Please note that the pump becomes hot during operation. Use the included heat protection sleeve and allow the pump to cool between repeated inflations.