I bought my WR426 new back in 02' and so far it has been a great bike. The bike is mostly stock except for the free mods/JD jetting, YZ seat/Clarke tank, YZ stock exhaust w/Pro Moto spark arrestor, BRP sub mounted Scotts dampener and Precision Concepts Suspension. This bike works great out in the desert and I feel that the mods I've done so far have been very beneficial. I have kept track of my milege since the bike was purchased and I am at 3000 miles. I change the oil and clean the air filter regularly as well as check the valves, which by the way are still in spec. Gotta love those Yamaha motors:thumbsup: Now it's time to replace some general wear items such as brakes, chain and sprokets. How do you feel about brake pads? I could go OEM, aftermarket or I have also heard that Honda OEM pads work even better. Althought if this is the case what models fit? As for the chain and sprockets, I can't complain about the stock D.I.D. O-Ring so I plan to replace it with a new D.I.D X-Ring. As for sprockets I was looking at the Iron Man or the Renthal Twin Ring. What are your thoughts? I want something that will last and mabey save a little weight. While I'm foolin with the chain I thought I might change the rear chain block, since my stocker is beat. I was thinking either BRP or T.M. Thanks for the replies. Here is a picture. I know its not quite a 450 but I still love this bike.