Just looked at 949 racing's website and noticed they have the Xida-CS on their webpage. Copied from http://949racing.com/xida-club-sport...ver-miata.aspx
XIDA Club Sport coilovers
Coming January 2011
90-05 Mazda MX5 Miata
* Single adjustable Compression & rebound adjustment together, 12 step
* Full aluminum monotube construction
* Floating piston internal design
* Adjustable height spring perches
* Torrington thrust bearings
* 120mm stroke front, 103mm rear
* High Pressure nitrogen charged
* Spherical bearing lower mounts
* 700/400 standard rates
* 60mm Hypercoil OBD springs
* Total weight: 7 lbs front, 6 lbs rear (light!)
* Damping sweep for front 800~500, rear 500~300
* Can be upgraded to double or triple adjustable
* OEM 99-05 Mazda upper mounts
* Dual spring system
* Miata/MX5 specific, CNC machined aluminum extended upper spherical bearing mounts
* Coaxial perches included with optional alloy upper mounts
XIDA Club Sport
New for 2011 is the long awaited and more affordable version of the highly sought after Xida coilovers. What did we take out? Nothing! This is the exact same damper as the Xida-S, double and triple adjustable. The difference is we adapted the front shaft and shock body to be compatible with the low cost but very functional OEM Mazda 99-05 upper shock mount. This and the success of the original Xida system has allowed us to slash the price down to $1799 for the Club Sport.
The exceptional valving sensitivity produces both incredible grip over any paved surface and exceptional ride quality. Make no mistake, despite the surprising streetability, these are purpose built racing dampers intended for use under the most demanding motorsports environments.
Confused about ordering?
Sorry! If you have a 90-97 Miata and do not have factory NB mounts and hardware, you can just add them to your Xida Club Sport order for a complete ready to bolt in system. If you have a 99-05 Miata or the upper shock mounts from same, just order the Xida Club Sports without mounts.
For race tired cars with track performance as the main goal, we generally start with 700/400 rates. If you all of your local tracks are really rough and bumpy, then drop to 600 or 650 from and 350/400 rear. If running 275 Hoosiers on smoother lots or 225/45's on 9" wheels with noticeable aero downforce, 800/500.
For a mostly daily driver that only sees occasional autocross or track use, 550/350 if using really sticky street tires. For medium or small (205/50 on 15x7) street tires on a mostly street car, 450/300 rates. If running an LSx conversion, sames rates apply. If running a small block Ford conversion, add 100# front and 50# to each recommendation range. If you are still not sure, give us a call. We'll get the system matched exactly to your needs.
* SCCA ITA, CSP, SSM,STS, STR
* 2010 NASA PT/TT 5 points