An update to an old post, the Works Performance shocks are still working fine. The springs have not settled any more than they did after the first season.
I posted this in 2005:
Just a note for other options on long-travel SX's. I went with Works Performance 2 winters ago. I think the cost was $850 for all four shocks. With a 'normal' setup, ride height is about 1/2" higher than an XTC long-travel sled. Ride is *better* than the XTC, the compression and rebound damping are lower. Cornering roll is higher, but not a problem.
I ride at high speeds (85mph) between corners, on trails with little snow and lot's of 1-foot dips. With the stock suspension set for maximum ride height, I'd have to slow down and stand to survive. Now, I can just sit down and ride.
I had the springs sack out a bit, and then preloaded them quite high last fall. I don't know if this will be a continuing problem... Also, the front shocks wept a little oil. I'd guess 1/4 of a teaspoon total. There are two springs per shock, and you can adjust 'crossover' between them.
I think if these shocks/springs hold up, that this is a good alternative to modifying the stock shocks, plus you get long-travel front shocks. I think the damping is perfect for high speeds, with no sharp shocks transmitted, and fast rebound (but doesn't kick the seat up). The feel is like a long-travel cross-county cycle-cushy, but well-behaved.