GEWAGE CO2 Inflator Bike Pump with 4 x 16g Cartridges, Grey, Presta & Schrader Compatible, CNC Control Knob

GEWAGE CO2 Inflator is a compact, CNC‑controlled cartridge pump that rapidly inflates bike tyres using four 16g threaded CO2 cartridges.

When a roadside puncture threatens to cut a ride short, a lightweight CO2 inflator is a fast, stowable solution. This GEWAGE inflator accepts threaded cartridges, works with both Presta and Schrader valves without swapping heads, and includes a protective sleeve for cold cartridges. It’s made to fit in a saddle bag or jersey pocket so riders can restore pressure in seconds and get back on the road or trail.

How quickly will this CO2 inflator reinflate a flat tyre?

Inflation speed depends on tyre volume and cartridge size, but a single 16g cartridge will typically bring most road tyres to riding pressure in a few seconds and larger mountain tyres to partial or usable pressure. The CNC control knob lets you modulate release for more precise inflation.

• 16g cartridges included: four threaded 16g CO2 cartridges.
• Control knob: allows gradual or full release to avoid overinflation.
• Seconds versus minutes: inflates much faster than hand pumps.

Will this inflator work with my valve type and cartridge sizes?

The head is designed to thread onto standard threaded CO2 cartridges and seals to both Presta and Schrader valves without changing fittings. It fits 12g, 16g, 20g and 25g threaded cartridges; an insulating sleeve for 16g use is supplied to protect your hands.

• Valve compatibility: direct fit for Presta and Schrader tyres.
• Cartridge sizes: compatible with 12g–25g threaded cartridges.
• Insulate sleeve: included for safe handling of cold 16g cartridges.

How compact and durable is the GEWAGE inflator for everyday riding?

Designed for portability, the unit is significantly smaller and lighter than a standard hand pump, slipping into a saddle bag or jersey pocket. The inflator head and control knob are made from CNC‑machined aluminum for reliable, repeatable performance when you need it most.

• Small footprint: fits in most cycling storage spaces.
• Lightweight: ideal for race, road and mountain riders.
• Build quality: aluminum control knob for precise metering and longevity.

Are there precautions or limitations when using CO2 cartridges?

CO2 provides a quick pressure boost, but it can seep out faster than regular air, so plan to check and re‑inflate with a pump later if you want long‑term pressure retention. Also, the cartridge and head become very cold when discharged, so use the insulating sleeve or gloves to avoid cold burns.

• Shorter retention: CO2 may lose pressure faster than pumped air.
• Cold discharge: use the insulation sleeve to handle cartridges safely.
• Single use cartridges: dispose or recycle cartridges according to local rules.

Who is this for? The GEWAGE CO2 Inflator is ideal for cyclists who value speed, compactness and simplicity—road racers, gravel grinders, commuting riders and mountain bikers who want a fast, lightweight emergency inflator. It’s also a practical gift for cyclists who prefer minimal carry weight and quick roadside fixes. Keep a spare cartridge or two and a manual pump if you need long‑term pressure maintenance after using CO2.