Thread: 600RR Fork Oil (2005-2006)

Plaza Cycle: Honda: Suspension Fluid SS-55 10W

The above link is the only reference to SS-55 that I found, and it claims that it is 10W. However, the bottle looks really old. I did look on the Honda page you linked to and saw both the 5W and 10W, but not the call number specified by the manual.

Interestingly, the manual calls out the SS-8 (10W) oil for the damper rod forks in the 2003-2004 model years. The number changes to SS-55 for the cartridge forks in the 2005-2006 model years, which might suggest that it is no longer 10W oil. As you mentioned and I suspect, the cartridge forks may require 5W oil. There are many ambiguities, however, that make me hesitant to go with 5W at the moment.

I'm getting them from Dan Kyle. Initially he told me that the stock weight was 10w, but when I ordered Ohlins oil at 10w he balked and suggested that I use the stock Honda oil. I am now in the process of identifying the weight because I am planning on buying either AMSoil or Redline oil when I do the swap.

Thanks for the advice! This will be my first go around with cartridge forks but I had my SV forks apart plenty of times, including a full rebuild. I'm hoping there are no surprises!