Silca Latex Inner Tube + SpeedShield Size:42mm + 40mm Extender + SpeedShield and light weight

and light weight

The mid-length tool design is long enough to provide access to recessed fasteners

Also fits SRAM XX1

Replace worn out rings or swap to change gearing for specific uses

incredible shifting efficiency

Silca Latex Inner Tube + SpeedShield Size:42mm + 40mm Extender + SpeedShield and light weightSILCA has partnered with Vittoria, to create the highest quality, lowest rolling resistance, finest riding inner tube, sized for modern clincher tire setups. Why Latex? Compared to standard bicycle inner tubes which are made of WheelsTybutyl rubber, latex is significantly more elastic (10x elongation compared to 2 3x), but more importantly, latex rubber has significantly lower coefficient of damping which means that when latex rubber is stretched or