most k2's have too large of slots for the supplied mounting hardware, so you will need to make some longer cross bars if you buy this seat THIS IS A NEW BUDDY SEAT FOR CT90 K1 TO K3'S THAT HAVE WHITE SEAT TRIM. TWO BOLTS, BOLT UP TO THE UNDER SIDE. THE TWO BOLTS ON THE BOTTOM ARE 5_1/2"_BOLT_SPACING ACROSS FROM EACH OTHER THE PIC OF THE BOTTOM IS OF A 6.5" BOLT PATTERN BUT YOU GET THE IDEA (ALL MOUNTING HARDWARE IS INCLUDED WITH THE SEAT) ===================================================== question: I DON'T KNOW IF THIS WILL FIT THE OLDER SMALLER RACKS OF THE CT200 AND CT90K0 ? ANYBODY ? answer: "Just letting you know that this fits the CT90 k0 just fine! Thanks, Daryl J" SEWN/W/S/BUD1R