Suspension Kit Swingarm 28-1061 YZ80 / 85 '99-'15One kit does it all! All of the bearings, seals, shafts*, bushings, thrust bearings (if required) in one all inclusive kit to do the job correctly and completely. All bearing shafts manufactured with 52100 bearing steel that is hardened and centerless ground for a precision fit and extended wear life. All steel spacers are case hardened and plated for resistance to wear and corrosion. Needle thrust bearings have been replaced with Teflon bearings.