Why's everything on fire?
Join Date: Mar 2011
Rep Power: 1
DID is highly recommended around here (and for good reason); they were one of Honda's original suppliers for the 919 chain. The other supplier is RK Chain - in other words, the 919 came from the factory with either a DID or an RK chain. If you went to Honda and bought another chain, it will usually be a DID or RK box with a Honda genuine parts sticker inside a plastic envelope (envelope sometimes not present). I have one of those here if anyone wants to see a picture of it; Honda, therefore, thinks you can't go wrong with either DID or RK.
As for the sprockets, the 919 shipped with Sunstar-manufactured steel sprockets front and rear. The front Honda one is different from the aftermarket-available Sunstar sprockets in that it has some sort of rubber damper ring; I don't know how important that is technically (I think it's there to dampen chain noise) but the bikes with the aftermarket Sunstar sprockets don't seem to suffer any from the lack of it. The stock rear sprocket is identical to the Sunstar aftermarket offering, IIRC it even still has the Sunstar logo on it.
While the 919 shipped with only Sunstar sprockets, JT Sprocket is another OEM supplier for Honda and many Hondas of all sizes come with JT-made sprockets. So that's another maker that Honda endorses, even if not for the 919 specifically.
Bottom line, if you want to stick close to what the Honda mothership thinks is good without paying dealer prices, DID or RK for the chain and Sunstar, possibly JT for the sprockets. DID and Sunstar would be the top choice, but RK/JT isn't far behind and in most common use you will probably see no practical difference.
As for what I'm running - RK X-Ring "XSO" chain and JT Sprockets, because when I needed a chain and sprockets I was able to find a great deal immediately, I knew all the above already, and I've had good experiences with JT sprockets in the past. I have almost 20,000 miles out of them and judging by chain stretch and sprocket wear I probably have another 10,000 left before I have to think about replacing them (I have an automatic chain oiler.) What's going on my 919 next? I found some screaming deals on eBay over the past year on Sunstar sprockets and an OEM Honda Genuine Parts DID X-Ring chain, so those will go on next as they are currently sitting in my parts cabinet. That said, I had months go by between getting each of the three parts. If I needed another driveset today and the RK/JT combo deal was still active, I'd jump on that quite happily with no concern that I was diminishing the quality or longevity of the bike.
1986 Honda Nighthawk 700S
2002 Honda 919