Bk Mod 2002 Yz426f

So I've been reading a lot of posts about the BK MOD. I've had my '02 426 for about 2 weeks now and wondering if I should do this to my bike. What exactly is it, can I do it myself, how much does it cost, and where can I find it? :)

As is the Common Threads Sticky....

THANKS GUYS!

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