Supersprox steel countershaft sprockets are made from SCM-435 case hardened steel for extended life.  The refined core structure ensures that the teeth will not break when worn like cheap C-45 sprockets.

Grooves and lightening holes for off road bikes and Lightening holes for street bikes.  The lightest and strongest sprockets  on the market.

Also available in the following sizes

15T, 17T

520 Pitch - 16 Tooth