Hey man, I just lowered my 01' R6. You'll need a lowering link or "dog bone" as some call it, they come in diferent heights but most go form 1"-3" adjustable. Around here most shops have to order them and they cost anywhere from $95-$130 a local shop was charging me $75.00 to install it. Then you'll also need to have the front lowerd which is done by adjusting the front forks, the local shop charged me $35.00 to do it for me.

However I whent on ebay and found the lowering link for $50 brand new! got it in two days, it had installation instructions and it looked really simple and ez so I decided to install it myself, and my girl friend helped me too. It took us about 30mins. to lower the back it was ez! ( you'll need a rear bike stand). So the next day I took the bike to the local shop and they did the front for me, I had them check the rear and they said it was done correctly.

If you are willing to do some of the work yourself like I did and shop around for the best deal you can lower your bike for about $85 like I did. Other wise you are looking about $250-$300.

I find most of my bike stuff on ebay, never had a problem.