272mm unthreaded central area ( to prevent damage to the engine casting & mounting plates ( 301mm total length ) For other lengths & diameters, send us details
Fit Big Twin Evo & Twin Cams and Sportsters 1985 to present ( last updated 10/7/14 ) Fits 1/2" 12 Point Head Bolts ( Set of 4 ) Held by Socket grub Screws & comes with allen key...Best also add a dob of silicon...to secure them.