KX80/85 BOLT-ON TRIPLE CLAMP KIT: Due to the inconsistancy and variation in head tube sizes on this model and the sloppy welds around that area from the factory, we recommend using our weld-on kit on this model to insure a secure frame bracket mount. Some KX's have plenty of area for a bolt-on kit and some don't. There is no way to tell which ones do or don't.