Iron Horse Sunday suspension bearing kit. Fits ALL Iron Horse Sunday frames. Original frames had standard bearings with spacers. Later frames had extended races that took the place of the spacers. The new bearings with extended races are backwards compatible and this kit fits ALL Sunday frames. Includes 8 pcs Enduro MAX sealed cartridge bearings. 4 pcs have Black Oxide anti-corrosion bearing race treatment. 4 pcs have extended inner races.