Types of shock absorbers
S = single tube shock absorber
T = twin tube shock absorber
25, 30, 36, 39, 44, 46 & 50 = piston diameter in mm
E = Emulsion shock absorber
D = High pressure gas type shock absorber with internal reservoir in the main body
P = High pressure gas type shock absorber with external “piggy back” reservoir
H = High pressure gas type shock absorber with hose mounted external reservoir
Q1 = Progressive damping shock absorber with two pistons
W = Shock absorber delivered without spring (spring needs to be ordered separately)
Adjustment Features
C1 = Adjustable compression damping
C2 = High- and low speed compression damping
C4 = Electronically controlled (EC) compression damping adjuster
R1 = Adjustable rebound damping
R4 = Electronically controlled (EC) rebound damping adjuster
S = Hose mounted hydraulic spring preload adjuster
S1 = Electronically controlled (EC) hydraulic spring preload adjuster
B = Integrated hydraulic spring preload adjuster
L = Adjustable Length