Speed Dealer Polished Aluminum Breather Bolt Kit for 1991 to 2014 Sportster Made in the U.S.A. by Speed Dealer Customs Pair of head breather bolts - comes with 4 pieces of Uni Foam. Stainless steel snap rings and wire mesh. 1/2-13 X 3/4" Threads Fits 93 and up EVO's and 91 and up Sportsters.