Pretty sure they're made by Vance & Hines. The Kury late model dresser duals are.

 

Kuryakyn makes cams too.

 

I have crushers on my '10 FLHTK, and you may want to add the kury true-duals, with the cat converters in the head pipes, it did not have the sound I was looking for, very deep tone which was cool, but kind of quiet, now however, with the head pipes, it is very nice (and fairly noisey) so pretty cool. I am very satified with my purchase, you probably will be as well.

good luck

 

http://www.kuryakyn.com/Products/391...fect-Storm-Kit

I have the perfect storm kit. Look at the link I attached...they have a dyno chart with the crushers. I do know that V&H makes the Kuryakyn "Power Cell". Its the same as the "Power Duals" with a different heat sheild. I am very pleased with the power the kit makes. They provide a free TTS map specifically made for the kit on the Kuryakyn website.

Kuryakyn Perfect Storm Kit 79HP and 92TQ