This is a complete rear wheel bearing and seal kit for the Yamaha YZ450F dirt bike, covering model years 2003 through 2008. Everything you need to replace worn-out bearings and seals in one go. The brand is RJATV, and the part number is RJ25-1252/13. These are brand new, direct-fit replacements that'll help eliminate wheel play, reduce dirt entry, and keep your rear wheel spinning smooth. Perfect for riders doing maintenance at home or in the shop. Comes in original packaging, just like you'd get from a parts store. If your bike's been feeling a bit loose in the rear or you're doing a full rebuild, this kit makes the job way easier. Solid quality for the price.