does anyone have it on there 400ex im thinking about ether the hmf slip on or the dmc i havent heard much about them so can someone tell me on the hmf website it says that the slip on can produce up to 9ft lbs of torque and up to 6 hp is that true. thanks

 

y do u want a diff exhaust when u already have a full yoshi, does it not help at all?just curious

 

i have the DMC great bottom and middle better than stock top. i love it. works well with my engine mods too