I bought this exhaust for my YFZ450, and I absolutely love it! Be aware though, it is insanely loud. If you want to go to the track with it, you will need a quiet core. It DEFINITELY increases horsepower, and just wakes YFZ's up. Overall a amazing product.
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This is a exhaust I been wanting but I haven't got it but I heard it's been very loud exhaust so if I ever get it I'm keeping it loud because I drive everywhere on the road and I want a car knowing if I'm coming down a street you'll probably hear this scream on the other side in town
Looks and sounds great on my 400.
I put the big gun exhaust on my 2016 Yamaha raptor, lol it's so loud and so much more aggressive when I hit the throttle, it's sounds like the hells angels are coming when I'm ripping around, so I love this big gun exhaust, also I installed a big gun evo on my sons Honda 400x atv and that sounds amazing also and great throttle response we are very happy
if you wont to wake the neighbors up early in the morning its perfect :) I had it installed in a matter of mins. the BG quiet core is on its way ill see if it will tone it down to keep the cops away from the house..