The 8970 Series Piggy Back style damper is a triple adjustable model with ride height, preload, rebound, high speed compression, and low speed compression. The 8970 features the latest technology in motorcycle suspension including an astounding range of adjustment and separates low speed and high speed adjustments like no other shock absorber on the market. The designating features of the 8970 over the 8987 are most noticeable in the range of adjustments. The 8987 has 25 clicks of low speed compression and the 8970 has 35 clicks. The 8987 has 17 clicks of high speed and the 8970 has 65 clicks of high speed adjustment. The tunability of the 8970 is unrivaled.