Ive used them on some heavy ass baggers. Contact Jeff Cuddy of Bag Dragger Customs in TN, and tell him Alex Haze recommended you. He's "the guy" when it comes to them, used and sold them more than anyone I know.
Copy that ty. Also, read some guys have pulled their spikes and cone filters off, I did to, went back to stock, was tired of the look anyway, wondering if their bikes ran better.