Cometic, EST top end gasket kit. Twin Cam 4" bore - 99-17 110" Twin Cam (excl. Twin Cooled) (NU) 978588 May require a load equalizer

May require a load equalizer when used in conjunction with custom lighting

Biltwell handlebars and risers that have received TüV verification are among the strongest and most thoroughly well-tested motorcycle parts in the world

Includes a fuse block that holds a regular starter relay and 3 ATO fuses and a 11-second self canceling run

Function must be programmed on OEM speedometer in order to operate on the Drag Specialties speedometer

Comes as a complete kit with everything included for a hassle-free installation

Cometic, EST top end gasket kit. Twin Cam 4" bore - 99-17 110" Twin Cam (excl. Twin Cooled) (NU) 978588 May require a load equalizerWith MLS (Multi Layer Steel) . 040" thick head gaskets. . 010" SLS (Single Layer Steel) cylinder base gaskets. . 020" SLS rocker cover gaskets. SLS gaskets have . 001" of high temperature viton rubber coating on both sides. Kit comes with all gaskets, seals and o ring for a complete top end rebuild. Note: Kit comes with 99 04 style valve seals and 99 10 style breather gaskets.