Just found out that the Termi high exhaust is $1999. The Termi low slip on is $1299 and the twin silencers like on the Full Throttle are $1399. The twin silencers are homologated and fairly quiet. The race slip on and the high exhaust both have removable DB killers (or baffles as we call them). I think both also eliminate the cat whereas the twin system does not. I ordered the slip on and got 10% off from my dealer.