Awesome part about triumphs, you can buy the full exhaust then use TuneECU and a $20 OBDII-USB cable from amazon to reflash your own ECU with whatever tune you desire. They have ready-to-go tunes for the 2012 675R on the TuneECU website with any combination of slip on, full exhaust, airbox, etc. It'd cost you $20, and about an hour start to finish if you're somewhat tech savvy and read the tutorials first.