S&S, SuperStock Evo cyl. head kit. Black - 84-99 Evo B.T. (NU) 537458 Contains parts required to update

Contains parts required to update clutch pushrod thrust bearing

Fits all 2006-2017 Dyna models with 49mm front forks

Fits models equipped with S&S manifolds with a slightly larger port diameter

Improves starting

WITH LEFT SIDE BRAKE CALIPER MOUNT

S&S, SuperStock Evo cyl. head kit. Black - 84-99 Evo B.T. (NU) 537458 Contains parts required to updateBlack powder coated finish. Bolt on with stock style flat top pistons. 76cc high compression heads for approx. 10: 1 CR (80"), 9. 4: 1 (89"), 10: 1 (96") compression ratios. The port design allows these heads to outflow stock heads by a wide margin. This set up can be used with up to . 585" lift with TDC lifts of . 252" intake and . 210" exhaust. All heads can be decked . 060" to increase compression but extra care must be taken when assembling decked