Good product, could use some small tweeking and improvements, but recommended.
Fabrication mounting holes were slightly off but I was able to make them work without honing or re-drilling. I just thought DG would pay closer attention to detail. No clamp included to mid pipe and fit was very loose without one. Had to use asbestoses tape as new DG was not big around enough to fit stock clamp on. Small issues I admit but these things can be addressed to make customer satisfaction more prevalent.
I ran the FMF Q4 on my 650L but it was not quiet enough to leave early for work. I took a chance with this one and I love it. Really close to the stock pipe volume but defense a performance throaty sound.