Shock Absorber Type 642 Competition Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) and progressive ZERO Friction springs

and progressive ZERO Friction springs with the correct oil

especially at the rear

Threaded Spring Preload: Achieve the perfect race sag with the high-strength threaded collar

The only difference is that it omits the compression reservoir and thus the option to adjust high- and low-speed compression

Ecoline 530 TS Road Ø36 mm

Shock Absorber Type 642 Competition Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) and progressive ZERO Friction springsThe ultimate in motorcycle shock absorbers: the upper mount is a precision milled component that connects to the compression reservoir and houses the high and low speed compression adjusters. With 22 clicks each, they can be dialed precisely to your needs. A pressure relief valve prevents hydraulic lock at maximum compression speed and mitigates uncontrolled jolts. Rebound is externally adjustable in 22 clicks, and spring preload is steplessly