Shock Absorber Type 631 Competition Eyes Surprise Wow Free vector graphic on Pixabay File:PSX DualShock Controller.jpg Wikipedia, the free encyclopedia System Shock Strategies and Secrets : Bernie Yee : Free Download. With compression tank on a flexible steel hose. The Wilbers Adjustline shock absorber Type 631 is ideal for motorcycles with limited space. The compression reservoir connects to the shock absorber via a flexible steel hose hose length and mounting angles can be chosen individually so the reservoir always finds its optimal position, for example on the rear frame where airflow provides additional cooling. The compression tank houses the screws for adjusting high and low speed compression damping in 22 clicks. At maximum compression speed, a pressure control valve prevents the shock absorber from hydraulic locking. Adjustment options for rebound, compression, and spring preload give you maximum control over your suspension. Product may vary from picture.