Bump and rebound damping forces are adjusted simultaneously through an adjuster at the base of the damper. Spax Adjustable Shock Absorbers are epoxy powder coated so that they look good and last a long time, and are guaranteed for 2 years. We are dedicated to ensuring the highest possible quality service to our customers. You can send us a message by using the "Questions and answers" section towards the bottom of the page. The item "Spax Adjustable Rear Shock Absorber Pontiac Firebird, Trans Am (70)" is in sale since Tuesday, October 24, 2017.This item is in the category "Vehicle Parts & Accessories\Car Tuning & Styling\Performance Suspension\Performance Shock Absorbers". The seller is "larkspeedperformancecentre" and is located in Leeds, West Yorkshire, England. This item can be shipped worldwide.