Hi Jamie,I recently purchased a set of your jackpot dynotuned mufflers as I love the look of the straight cuts and I am looking to quite my bike down from the propipe I was using last season,I will be using the jackpots in conjunction with my stock 07 headpipe,the motor is a 113 with head work and 10.5 to 1 compression,was wondering if you had done any testing with larger motors and these mufflers and how they performed.

 

The Jackpot Dyno Tuned mufflers work very will on bigger, higher compression builds. We are using them on one of our bikes that is making 145Hp/130Tq

 

excellent!