GYTR Exhaust Insert

Just bought the new GYTR Performance WR Muffler Insert for my 06 WR. I installed it in 10 Minutes. I have done all of the free mods (except the grey wire) and aside from changing the throttle stop this gave the biggest power gain. I went on a short ride yesterday and I'm impressed with it. It is $5 less than the PMB insert. It's alittle louder but I'm sure It's still under 96db.

just recieved my gytr exhaust insert for my new 2012 wr 450 and just measured the pipe i.d

stock.... 20mm

gytr insert ..25mm

have not run it yet but it should run a little less restrictive now, thought about drilling a 1 inch hole in the end of the spark arrester but didnt

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