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These precision devices allow the spring end coils to tilt up to 4 degrees as the spring is compressed, reducing the bending loads on your shocks by as much as 96%. This reduction in side force and friction allows more force and energy to be directed to the car's mechanical grip while reducing wear on your shocks.
The standard model (Part No. 1871-2.25) has a special 2.062" x 16 V-form female thread which fits the body of Penske 7500 and 8100 shocks. The 8175 model (Part No. 1871-2.25-1875) fits Penske 8175 shocks only. Both are designed to replace the spring height adjusting perch to minimize bulk. Sold individually. Anodizing color may vary from photo.
Installing a hydraulic perch at one end of the spring will reduce shock bending loads significantly; however, hydraulic perches at both ends of the spring will provide optimum performance. The Universal (Unthreaded) Hydraulic Spring Perch (Part No. 1870, sold separately) can be installed on the shaft end perch.
