i am looking for an exhaust, looking at hmf, t4, big gun. am leaning towards the big gun, with the race core it can do a 1/10mi in 4.89sec. atv action tested the big gun and t4 they liked the big gun more. thanks

 

I am saving my pennies for the Big Gun exhaust right now. I called them last week, and they now have a complete system available for the P650. Before you just got one pipe and the silencer, now two pipes! They have them in stock $399 plus shipping.

 

Please let us know about the noise level of the Big Gun.

 

Quiet core
82db @ idle
93db @ 4000rpm
1/10mi 5.19sec

Race core
84db @ idle
95db @ 4000rpm
1/10mi 4.89sec

Race core with end cap reducer prototype
82db @ idle
93db @ 3500rpm
1/10mi 4.73sec

stock pipe
81db @ idle
88db @ 4000rpm
1/10mi 5.39sec


cores tested with 144 fr main jet 140 rear jet (holes in airbox)