I had my Gas Gas Ohlins shock and forks done by Les at LTR and the rear shock spring he used for my weight (205lbs) was a 5.6. The Ohlins and the Sachs use the same size spring so I assumed that I would need a 5.6 for the Sachs on the Husky. After putting a few rides on the Husky the 5.4 that came on it seems really close, maybe even a little firmer than the Gas Gas with the 5.6. Does the Husky use a lighter spring to achieve the same result due to a difference in the linkage or leverage disadvantage of the swingarm? I plan on having Les do the Husky once it is good and broke in but I'm not sure I need a spring at this point.
What year and model Husky do you have? '08 and up Huskies have a little different linkage ratio is what I am told and cause a little bit stiffer spring than before. '10 may be different as well but not sure on that. I ride a '10 TXC 250 and am around 200lbs without gear, I use a 5.6 on the rear instead of the 5.4 it had on it. I might have gotten away with a 5.4 but I think it works better with the 5.6. I can tell you it gives better traction especially on hills with the stiffer spring. It really depends on what you ride and how it feels to you though. I did not know the ohlins 888 shock used the Sachs Spring, good to know.
My Husky is a 2009 WR250. I bought a Sachs spring for my 2003 EC200 Gas Gas and it was the same as the Ohlins but I think different year Sachs shocks have different lengths so it's best to get a measurement before assuming. Also aftermarket springs can vary a little on the inside diameter especially on the 5.6 spring so putting an aftermarket spring on an Ohlins shock might require a spacer. I traded the old Ohlins 5.2 spring for a Sachs 5.6 and the Sachs spring was about 1/3" longer but I don't know what bike it came off of and it appeared to be an aftermarket spring.
Interesting. Thanks for reporting. Not really pertinent to the conversation, but I'm using a spring from a Honda cr500 (5.7kg) on my 09' wr300 Sachs shock. Fit's perfect and I found it for cheap! Just an FYI....
