[Half_Crazy]

The Thor is arguably the best pipe for overall torque and horsepower. It is also arguably the best looking of the 2-into-1 pipes and it has a sweet sound too.
There was an 8-Ball at the track running 12.5's all day long with a Thor, Stock airbox w/K&N and vented lid, and stage 1 map. That's awesome for a basically stock bike with a pipe. Results like that speak for themselves.

 

[Half_Crazy]

i had the rpw on my kp and loved the sound and look with great performance to i also looked at the bassani but the sound was way to tinny to where the rpws have a deeper sound hope this helps

Haven't ridden with the Bassani yet. I'm hoping it sounds trashy as hell. I love trashy.