Select options Rapidé SingleMinded® Singlespeed Cog R270.00 R129.00 17t Back In Stock! Rapidé SingleMinded® WB Cogs have a 7mm wide base to spread the load on the cassette body and prevent gouging. Rapidé SingleMinded® WB Cogs work with both 3/32 and 1/8in chains. Made from Cold forged CR-MO steel (ASM4140) Heat treated (Hardened + double tempered) with a N.E.N finish. Available in 16, 17, 18 and 20 tooth profiles and fits all Shimano® compatible freehubs.