This is an headset for Triumph GT6 MK2 and MK3 up to KF10000 with a flat block. This headset has the correct intake and exhaust gaskets not like other aftermarket gasket sets. This kit includes every gasket you will need when removing the cylinder head. Please make double check that you have a flat block that does not have a recess around each bore. (Because of size additional charges will apply for 3-Day, 2-Day, Next Day and International Shipping.)