Known as the red HTS dampers in Japan, in the US they are painted gray and labled D-SPEC.

D-Spec Wide Extra Range Adjustable Shocks

TOKICO’s D-Spec Series adjustable shock is a multi-use product that’s the result of sophisticated piston and valving design. In addition, it utilizes a unique variable-aperture bypass, which is controlled by an adjustable slide valve.

D-Spec (damping specific) adjustments change both rebound and compression damping simultaneously. Between maximum soft and hard settings, the D-Spec is infinitely adjustable. For more information and to view the damping graph full size, click here.