Got a 03 America with 125 main 42 pilot one shim under thunderbird needles and unfilter air filter and Harley sportster muffler with 3/8 hold in baffeld. Running a 16 thooth primary sprocked and 42 on back. Will top out at about 82mph 5th. and 95 mph in 4 th but when go back to 5th can't hold. I pushing a 200 lbs. sidecar.Rudy
