New for 2021 Ultra High Range Adjustable Damper that lets you swap springs freely without a retune/rebuild & has very even and predictable force changes between our very defined 32 reference points on the infinitely adjustable rebound. Micro Cellular foam progressive bump stop, laser logo etched threads for quick visual symmetry in height adjustments left to right, & Airbag upgrade ability. ~ Fully threaded damper & lower mount allows vehicle height to be adjusted independent of the spring preload and without using a helper spring. We always suggest zero spring preload. ~ Replaceable compoments ~ Custom spring rates are available to special order in addition to helper springs, & bolt in air bags sold separately. ~ Smooth upper damper body is designed to seal against our airbag o-rings. Upgrade to airbags any time. Use Bellows style bags on front and rear. ~ Spring upper perch provides independence between the spring and the bearing. ~ Billet T6061 lightweight aluminum Lower mounts are gold anodized with laser logo. ~ Block letters on the threads are 5mm each, which quickly assist in visually matching left and right height changes. ~ GTS models use an eyelet bushing rear lower mount. GTR fork style mounts are available upon request.