There is finally an answer to those who have been turned off the rear conversion kits because it meant downgrading from a 9 speed shifter system to 7 or 8 speeds in order to accommodate a screw-on freewheel. The company which produces our 11 tooth 7 and 8 speed freewheels now makes a 9 speed version as well, which we have in stock with an 11-32 tooth gear range. It is of course a bit wider than the 7 speed freewheels, so most installations will require spacers on the axle and some spreading of the dropouts.