4 1/2" Standard Length OEM Style Power Mustang Rack Bumpsteer Kit is used for 94-Up Mustang OEM style power rack and pinion (14 x 1.5mm UNF) and stock length (14") lower control arms. Our kit eliminates unwanted bump steer created when chassis adjustments are made.  The kit features grade 8 hardware and FK JM series rod ends. You can not find a higher quality kit anywhere for the money.This kit requires that you drill the tapered hole in the steering arm to a 5/8" hole.