Gave this product an overall "Good" reading. Exhaust looks and sounds great. Must say only issue I found was installation with the M4 Mid-pipe. Only reason is that cutting is required on the factory header and cannot giants appropriate length for installation. I only had to firmly grasp and rotate the Slip-On in order to start thrashing bracket bolt, however after a couple minutes... no problem. Love the sound of the exhaust and Mid-Pipe, decongestant his this bike should sounds. I highly recommend it.