Compatible with the early Twin Cam models equipped with non-hydraulic chain tensioners

1" Inch clamping area will not work with stock handlebars

Tunnel inside diameter 4

Cylinder to case (2 used): 86-21 XL

Comes complete with hardware

COMETIC, EST TOP END GASKET KIT. SHOVELHEAD Olja//Oil Compatible with the early TwinWith MLS (Multi Layer Steel) . 040" thick head gaskets. The SLS (Single Layer Steel) cylinder base gaskets and SLS rocker cover gaskets used in these sets are . 020" thick and 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. OEM replacement reference 17034 66. Fits: > 66 84 Shovelhead