THIS WILL NOT WORK AS IS FOR THE CT90'S K1 TO 79 THIS STARTS OUT AT 23MM ON THE CARB END DOWN TO 21.5MM WHERE IT BOLTS TO THE HEAD PIPE, INLET CENTER TO CENTER MOUNTING TO HEAD HOLES ARE 46MM CENTER TO CENTER TO CARB IS 48MM THIS HAS A O-RING GROOVE TO THE HEAD THIS CAN WORK FOR CT90'S IF YOU KNOTCH OUT THE HOLES AND USE FLAT WASHERS UNDER THE BOLT HEADS.. CLICK ON PIC ABOVE WITH THE 2 OVALS 212M @ *INTAKE_MANIFOLD TO_HEAD_ORING 27MM_X_2MM 91305-KF0-003 1/20M CT110_S90 (R2102) THIS IS THE O-RING FOR THE BASE OF THE MANIFOLD. IT GOES BETWEEN THE MANIFOLD AND THE HEAD. WITH THESES MANIFOLDS THERE IS NO GASKET JUST THE O-RING BETWEEN THE HEAD AND THE MANIFOLD. IT FITS THE (78 TO 82 CT70'S AND CT90'S), ALL CT110'S AND ALL PASSPORTS. R2102 @ *CARB INSULATER FITS ALL CT110'S (ATC110'S_79/80) 48MM_C/C 22.5MM_CENTER 16211-943-306 1/22A (R2056)THIS WORKS WITH OUR 300001.5 AND TBQ22KIT INTAKE MANIFOLD VERY WELL!! THIS GOES BETWEEN THE CARB AND INTAKE MANIFOLD AND IS FLAT ON BOTH SIDES. THIS FITS THE CT110 CARB JUST RIGHT!!!!!!! R2056 @ *INSULATOR GASKET WITH_22MM_ID AND_48MM_BOLT SPACING 16212-943-306 1/22A (219D) 219D