Bicycle inner tube Fischer Sclaverand valve 27.5 inch (69.85 cm) ETRTO standard

Inner tube for bicycles by FISCHER with a Sclaverand (Presta) valve, sized for 27.5 inch wheels (69.85 cm) and conforming to ETRTO dimensions. This tube is designed for use in compatible mountain and hybrid bikes, offering airtight sealing and compatibility with presta-valve pumps. The construction supports straightforward replacement when repairing punctures or during routine maintenance, and it fits rims and tyres that follow the 27.5 inch / 69.85 cm ETRTO standard.

Advantages

The Fischer Sclaverand valve inner tube provides a secure, airtight fit for tyres matching the 27.5 inch ETRTO size, enabling reliable pressure retention and easy inflation using presta-compatible pumps. Its standardized dimensions ensure compatibility with a wide range of rims and tyres for mountain and hybrid bicycles, while the Presta valve design allows for precise pressure control and convenient valve-core access.

Suitable for

• 27.5 inch (69.85 cm) mountain bicycles with ETRTO-standard tyres
• Hybrid bikes that use 27.5 inch ETRTO inner tubes
• Repairing punctures or replacing worn inner tubes during maintenance
• Use with presta-valve pumps and compatible floor pumps or hand pumps

Key specifications

• Valve type: Sclaverand (Presta) valve
• Wheel size compatibility: 27.5 inch (69.85 cm) ETRTO standard
• Intended bike types: mountain and hybrid bicycles
• Inflation method: presta-valve compatible pumps

How to use

Remove the wheel from the bicycle, deflate and unseat the tyre bead, then extract the old inner tube. Inspect the tyre and rim strip for sharp objects or damage before installing the new Fischer inner tube. Partially inflate the new tube to give it shape, position it inside the tyre, reseat the tyre bead on the rim, and inflate to the recommended pressure for your tyre and riding conditions. Ensure the Sclaverand (Presta) valve is straight and the valve nut (if present) is secured to prevent shifting during use.

Recommendations

Check tyre sidewalls and rim tape before installation to avoid repeated punctures. Use presta-compatible pumps and observe the tyre manufacturer's recommended pressure range. For longer valve reach or removable valve-core access, confirm that the valve length suits your rim depth and that a valve adapter or extender is used if necessary.