Topeak Presta Valve Extender Size:60mm 47mm chainline gives full access

47mm chainline gives full access to all gears on your rear cassette with efficient power transfer and minimal running noise

Shifter to Handlebar Junction A: 350mm

and cannot be felt while riding

just go for the next size up

Genuine replacement chainrings for the Shimano Ultegra FC-R8000 crankset

Topeak Presta Valve Extender Size:60mm 47mm chainline gives full accessCCACHE recommends these type of valve extenders with next gen lightweight tubes such as Tubolito Tubo S Tubo and Schwalbe Aerothan. They don't require the inner core to removed. Precision machined aircraft aluminum Presta Valve Extender with leak free o ring seal. For 60mm or less, deep section rims. Specifications Ideal for use with Tubolito or Schwalbe Aerothan tubes Machined aircraft aluminum alloy Leak free o ring Seal Mfr Claimed Weight 3. 4g