The world's first, and still most reliable, 'split' rear sprocket system for gearbox engined karts.
Carriers available in 25, 30, 35 and 40mm bore, alloy or steel.   
Steel sprockets available in #428 or #520 pitch for all sized carriers.
 

We apologize,  but these sprockets and carriers are no longer being made and we are trying to find a new manufacturer. At this time we have no stock of all sizes of sprockets and carriers.