Yes, their quality is really, I would easily put in in the same league as Arrow, L.Vinci, Yoshimura. The only exhaust that I've personally have used and that was on my 2nd YZF R1. On that one I went with a titanium
Moriwaki Engineering full system. They could teach Graduate level TIG welding.
Moriwaki are the
Best Damn Motorcycle exhaust Maker that most here in the US have never heard of. Their products are faultless.
If they made an exhaust for the 6R,
I would not have even considered any other maker. They are that good!
Mamoru Moriwaki, president of the company has probably had a reason to be driven, OCD, exacting in the quality of his products. His wife, who has a Master's level degree in mechanical engineering just happens to be the daughter of legendary tuner/team owner/and founder of of the company that bears his last name,
Hideo "Pops" Yoshimura.
Check out the names of winners/champions they have worked closely with. This URL is from the compny site,
Moriwaki Legends, and don't stop with the first page.
MORIWAKIENGINEERING
So just how good are
Moriwaki Engineering? Mighty
Honda, who has been out of the
WSB business for many years has had a change of heart.
HRC, the mystical racing arm of Honda, has contracted Moriwaki to take the helm, leaving sometimes OK
Ten Katé, the Dutch firm who won a couple of WSB titles with some very fine riders many years ago, but as of late have been floundering quite badly. HRC and Moriwaki have had a long relationship, esp. at the FIM Endurance Championship. They will be starting with their feet in quick sand, but HRC
expects Great Things from them, and the cost be damned.