A few years back, TEIN had developed the Micro Speed Valve(M.S.V) and applied it to the Comfort Sport, Euro Damper, Mono Flex, select Super Racing and the Group N. Dampers.

For some consumers, this little feature goes without notice. However, from a performance standpoint this feature pays big dividends in both ride comfort and handling performance.

Here’s a simple diagram of how M.S.V functions

M.S.V functions best under low speed damping. (Basically any type of vehicle body movement is at low speed damping). Normally, a damper without this feature would have a slight dip in its damping curve which tends to worsen as the click adjustment is changed to a softer setting, as shown in the below chart

Again, this is much more beneficial under low speed damping, attributing to increased stability under braking, as well as quicker steering response. Not to mention that overall ride quality will be improved.
With M.S.V,  the damper will now have a much more consistent curve in damping. As mentioned, some consumers may not be able to differentiate such a change. But, to a rally competitor this item is just as beneficial as many of the components that comprise the Group N. Dampers.

TEIN is constantly looking for ways to improve our products. Through extensive testing and development under extreme racing conditions, we have been able to make products that work for the everyday driver. The M.S.V is one of TEIN’s proprietary features I think deserves notice.