how to take the.......

[04blackyfz450]

hey, my buddy has a 400ex and we tried to take the spark arrestor out. we took the 3 bolts off and took it out, but how do you get the spark arrestor out and still have the silver cap and the end???
if you know reply,thanks,
Nick

[jsmith2232]

I did that when i had my stock exhaust still but the gains are minimal. you need to cut thru the screen all the way around on the inside.