VALVE EXTENDER SIZING

VALVE EXTENDER SIZING

                  

standard tubular valve stem & standard tubular valve with tire mounted on 30 mm deep rim

                      

40 mm extender                  28 mm extender                 20 mm extender

all mounted on a 30mm height rim with valve core reinstalled

             

40mm valve extender with Silca pump head in place / red line shows extent pump head reached

25mm should be allowed for solid pump head positioning

TO CALCULATE VALUE EXTENDER LENGTH USE FORMULA BELOW

RIM HEIGHT + HEIGHT REQUIRED FOR PUMP HEAD (25mm) - STANDARD VALVE HEIGHT (36mm)

better a little too long than too short

place an appropriate valve extender on your spare tires before riding or racing saves time changing a flat

WORLD CLASS CYCLES LLC.

207 219-8858