I have dual dynomax VT's on my Rbz. Really takes care of the drone. Quietens things down nicely at idle and cruise. Great sound when opened up . Looks like they are discontinued though
I run a pair of dynomax VT mufflers on my rb swap. I had tried other mufflers but these are hands down the quietest at idle and cruise as well as dealing with annoying drone at cruise. Open it up and they have a great sound.
What length and spring rate?. Have two 8 inch length 200lb and two 8 inch length 225lb coilover springs (2.5 inch diameter) Used for about approx. 2000 miles. P.M if interested.