Butyl MTB Inner Tubes - (650B) 27.5"x1.75/2.125 Presta (48mm)

High quality 100% butyl inner tube with Presta valves (high pressure valve)
Choose to buy in bulk and save £££s! 

• This size is most often used on wider XC/cross country, trail and all-mountain bikes.
• Presta valve type (AKA High Pressure Valve or French Valve).
• Threaded valve stem with security ring prevents rattling on the rim and makes pump attachment easier.
• 48mm length valve suitable for most standard depth rims up to 20mm.
• Reinforced dual thickness tube/valve interface to prevent punctures.
• Std weight butyl rubber construction.
• Weighs 250g.

These innertubes are compatible with the following ETRTO tire sizes:

Imperial Sizes

CE standard 

PLEASE NOTE: To avoid punctures to new inner tubes please follow these rules
1. Check the tyre for the object that originally punctured the tube before replacing.
2 .Make sure the rim tape covers the valve hole in the rim, otherwise