NEW Problem Solvers Presta Valve Extenders: Standard 50mm Black brand_sunrace The Shimano GRX SM-RT64 disc

The Shimano GRX SM-RT64 disc rotor delivers powerful and consistent braking performance in all riding conditions

Wide smooth center tread for use on hardpack trails

Optional rain cover

40% more contact area than the competition

NEW Problem Solvers Presta Valve Extenders: Standard 50mm Black brand_sunrace The Shimano GRX SM-RT64 discProblem Solvers basic valve extenders. Tube valve core remains unscrewed, extender threads to valve allowing the use of shorter length valves on deep section rims. Sold individually Designed for standard presta valves. Not recommended for use with removable core valves Allows use of short valves with deep section rims Use Teflon plumber tape to control air leakage Valve Length: Long 56 74mm Valve Length: Short 32 40mm Length: 50