I am looking into a new exhaust for my YFZ. Anyone have one of these WB slip-ons? What is the good/bad/and ugly? Do you have to rejet when replacing the restrictive end-cap for the more open one? With the end cap only being held in with one screw, anybody ever lose one while riding? I ride a mix of places, some are closed course and will tolerate a loud exhaust, someplaces the quieter the better...

Anyone been soundchecked with a HMF Ballance full system(aluminum can) and the quiet core in? While I'm at it, anyone have a pic of the new "black chrome" can HMF has out? Preferably on something Yamaha Blue?

Thanks

 

check out www.hmfengineering.com it should answer all your hmf questions, but as for white bros. your on your own.