Machined aluminium housing, spring strut adjustable for spring pre-tension. Spring pre-tension is fixed with a set screw. Technical data Type: Gas pressure Top mount: eye Inner eye diameter: 10 mm Length: 280 mm Bottom mount: fork Fork width: 20 mm Adjustment options: Spring pre-tension, infinitely variable length adjustment +/- 5 mm Plumage colour: Black Spring characteristic: 25-35 Spring length: 180 mm Spring diameter: 46 mm Piston diameter: 30 mm Piston rod diameter: 12 mm