FISCHER polkupyörän sisärengas 26 tuumaa (66,00 cm) auto-/Schrader-venttiilillä – malli 85104

The FISCHER Bicycle Inner Tube 26" (66.00 cm) with Auto/Schrader Valve, model 85104, is a replacement inner tube designed for 26-inch wheels commonly used on city, trekking and recreational bicycles. Manufactured to fit a nominal rim diameter of 66.00 cm, the tube restores air retention after punctures and is compatible with standard Schrader (auto) pumps and service equipment. The product is intended as a straightforward repair component to get a bike back into riding condition quickly and reliably.

Advantages

This inner tube offers compatibility with widely available Schrader valve pumps, straightforward installation and a standard size suitable for many 26-inch bicycle wheels. Its simple construction makes it lightweight and easy to carry as a spare for roadside repairs. The tube provides reliable air retention for normal urban, commuter and leisure riding scenarios and is manufactured to consistent dimensional tolerances for proper fit and seating within the tyre.

Suitable for

• Replacement inner tube for 26-inch (66.00 cm) bicycle wheels
• City and commuter bikes
• Trekking and recreational bicycles
• On-the-road puncture repair and emergency spares

Key specifications

• Wheel size compatibility: 26 inches (nominal diameter 66.00 cm)
• Valve type: Auto / Schrader valve for standard pumps
• Material: standard butyl rubber construction for air retention
• Use: intended as a replacement inner tube for general cycling
• Weight class: lightweight typical of single-wall butyl tubes

How to use

Remove the wheel from the bicycle according to the bike manufacturer's instructions and deflate the tyre completely. Carefully unseat the tyre bead from the rim, avoiding sharp tools that could damage the rim or tyre. Extract the damaged tube through the tyre valve opening and inspect the tyre interior and tread for the cause of the puncture; remove embedded debris. Slightly inflate the new inner tube to give it shape, insert the valve through the rim hole and tuck the tube evenly into the tyre cavity. Reseat the tyre bead around the rim, ensuring the tube is not pinched, then inflate to the tyre manufacturer's recommended pressure. Reinstall the wheel and check for proper seating and any slow leaks before riding.

Recommendations

Carry one spare 26" inner tube with an Auto/Schrader valve on rides for quick roadside repairs. Check the tyre and rim for sharp objects before installing the new tube, and inflate to the pressure range printed on the tyre sidewall. Use a pump compatible with Schrader valves or an adapter if necessary, and inspect the replaced tube after the first few kilometres to confirm correct installation.