Spring rates are spring rates . What really is different about Titanium springs is that Titanium has a faster frequency response than steel , can you actually feel it , yes I can. What does it mean in laymans terms ? It comes into play at the point of direction change or in terms of a track , when you have poor traction conditions [ say off cambers with chop ] the rear wheel is able to track the ground surface with more confidence . Many cannot tell the difference in the real world . As far as being lighter than steel , in truth , the latest KYB springs are wound so as to be not much different in actual weight [ all things being equal of course ie: rate ] there is perhaps a one to two pound difference between the late KYB's and their Ti counterparts. There were some reports of the early KYB Ti springs breaking , I have never seen one. Springs are difficult to manufacture and without them costing way too much , most spring manufacturers just give a plus or minus of one full rate , so a 5.2 spring could be within spec if its 5.1 to 5.3 . I will rate your spring for you and give you a recommendation if you want to bring it in here. As mentioned above a single rate spring change 5.2 to 5.3 for example is kinda fruitless . Any bike equiped with a top out spring top out system can seem to have good free sag , but not be correct. Yes , I have seen a couple Race Tech specs that I didn't agree with , that is why I rate every single spring that comes through here / both forks and shock. Nick shut up , blah blah blah.