I don't have an answer as far as new stuff goes, but your bars are too thick for ATB shifters. Back
when SRAM was GRIPSHIFT a set was made just for road bars (larger inside diameter). I put quite a
few sets on both tri bikes and touring bikes. I love mine and wish they were still made. Mine are
for 7 speed and triple front. Anyone got some new old stock? How about in 8 speed?
Stan