General Motors touts the Multimatic Dynamic Suspensions Spool Valve dampers as a major proponent to track worthiness on the Chevrolet Camaro ZL1 1LE, but also off-road prowess with the Chevrolet Colorado ZR2. So, what makes these dampers so special?
Car and Driver cut one open in the name of science to see what’s going on inside the unit that makes it so unique in a road-car application. Compared to a more conventional damper, the DSSV damper uses what’s in the name: a spool valve. This valve varies dampening forces via fluid flow through precisely shaped ports and a spring-loaded shuttle.
C&D’s findings showed six windows per valve to define a baseline force-velocity curve. A shuttle closes a particular window to fluid in the damper, which allows more fluid to flow as movements become faster. Meanwhile, a pin moves the shuttle itself.
Multimatic included bleed paths as well, which allows fluid to bypass the compression spool valve during operation. The components help give cars street comfort and track-ready performance in one tidy package.