Honestly the best customer service I've experienced since the internet became a thing. I've worked with this company for several years now, and while they are a distributor of parts from other makers, they are very responsive and interact with the manufacturers quickly. If you have a question and put a ticket in, you get at least one response in 24 hours. The response is always professional and helpful.

An example, I ordered a J's Racing exhaust for my Honda Fit. It was backorderd, by J's Racing, for a year. The order stayed open, my helpdesk ticket stayed open, I checked back in a year, and the rdhjapan team continued to provide updates on my exhaust. I want to stress this was an order over a year old and they still were proactively providing updates on the ticket.

I would 100% recommend them for your parts.