Mine still looks pretty good, here's a pic before i did the full FMF exhaust, and I could never figure out why they painted the stock header pipe, when it turned out it was stainless underneath, just like the muffler.
Notice my rear brake caliper, how it has turned that dull looking aluminum color, I polished the engine, and you can see the difference, but it still looks nothing like when it was new, my brothers DR on the other hand is an 02 model, 3 years older than mine, and his engine still has that new shine, as well as the brake calipers. He lives in VA, and I live in the NE and I believe the weather has allot to do with it, you wanna see an engine shine, I wish I had a pic of his bike to share, and both bikes have always been heated garage kept, and covered.
I polished up the calipers after I took them off to replace the pads, but they never got that bright showroom clear coat look back to them, and not that dull aged look, but I'm not complaining, its a cream puff still.
05 Suzuki DR650, Mikuni TM40 flatslide pumper carb,JE 10.5:1 piston,stage 2#190 Webcam,open airbox, Twin Air,full FMF system,Pingel fuel valve,Ricor Racing rear shock, Ricor Racing fork Intiminators, Progressive springs, Sargeant seat,DRZ250 tailight,custom plate,LED's,GPS,sumo fender,PT bars,Cycra brushguards IMS lowered pegs, aluminum skid,bearing chain roller,Pirelli,tank bag(gone)
06 Zuk KQ700, Kenda Bearclaw HTR radials Warn RT25 w/ syn. line, 1.5mm clutch shims