Very simple, need to replace the rear shock on my trusty '93 XR600R, and can't seem to find anyone who makes a titanium rear shock? Anybody got any suggestions? I found a couple places that sell them for a CR500R, which looking at the schematics look relatively similar, however, the spring rates for the CR500 top out at like 7.0, whereas the spring rate I would need for my weight is 11.0. Does anyone know if I could use the CR shock on my bike and if so, what spring rate should I use, since they appear to be different? I'm always looking for ways to lighten my piggy and the heavy steel rear shock seems like a great place to use some Ti to lighten the load. Anybody?