Silca Latex Inner Tube + SpeedShield Size:42mm + 40mm Extender + SpeedShield 500 inches shorter than our

500 inches shorter than our grip length

and assists with moisture wicking

Also fits SRAM XX1

614 inch (41 mm) seat rail grip length

tidy and light mount that integrated perfectly

Silca Latex Inner Tube + SpeedShield Size:42mm + 40mm Extender + SpeedShield 500 inches shorter than ourSILCA 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