Inner Tube Radvik BIKE TUBE 27.5" x 1.95/2.25 AV48 — 27.5-inch bicycle tube, 48 mm Schrader valve

Radvik BIKE TUBE 27.5" x 1.95/2.25 AV48 is an inner tube designed for 27.5-inch bicycle wheels and tyre widths from 1.95 to 2.25 inches. The tube is fitted with a 48 mm Schrader (AV) valve that suits rims with Schrader valve holes. It is intended for mountain and trekking bicycles and serves as a replacement for punctured or worn tubes during routine maintenance or when preparing the bike for on-road and off-road use.

Advantages

The tube provides a straightforward, compatible solution for riders who need a reliable spare inner tube compatible with common 27.5-inch tyre sizes. The 48 mm Schrader valve simplifies inflation with standard air pumps and public compressors. Designed for general-purpose use on mountain and trekking bikes, the tube is easy to install and store as a spare for field repairs.

Suitable for

• Replacement of punctured or damaged inner tubes on 27.5-inch bicycles
• Routine maintenance and spare-part kits for mountain and trekking bikes
• On-road and off-road riding where a 27.5" x 1.95–2.25 tube is required
• Rims compatible with Schrader (AV) valves

Key specifications

• Wheel diameter: 27.5 inches
• Compatible tyre width: 1.95–2.25 inches
• Valve type: Schrader (AV), valve length 48 mm
• Intended bike types: mountain and trekking
• Material: standard butyl inner tube (typical for this product category)

How to use

Remove the wheel from the bicycle following manufacturer guidance, deflate the damaged tube completely and unseat the tyre beads using tyre levers if necessary. Extract the old tube through the valve hole, check the tyre and rim strip for sharp objects or damage, and slightly inflate the new tube to give it shape before inserting the valve through the rim hole. Seat the tube inside the tyre, reseat the tyre beads evenly around the rim, and inflate to the tyre manufacturer’s recommended pressure using a pump compatible with Schrader valves. Reinstall the wheel on the bicycle and verify correct seating and pressure before riding.

Usage recommendations

Use this tube as a direct replacement for tubes sized 27.5" x 1.95–2.25 with Schrader valve rims. Inspect the tyre and rim strip for debris before installation, maintain recommended tyre pressures, and carry a spare or repair kit for extended rides. If your rim accepts Presta valves or your tyre width is outside the specified range, select a tube with the appropriate valve type and size.