Wilbers 641 Competition Shock Absorber with Separate Canister + Hydraulic Preload Knob

In the Rieju Power Parts catalog, we include the Wilbers 641 rear shock absorber. It is the top-of-the-line model.

It features a 46 mm internal piston, specifically valved for each customer, with the optimal spring stiffness for the rider’s weight. The shock absorber is fully customized.

It includes a radial piston, high-quality shims, an extra-hard rod, a separate nitrogen canister with external high-speed (automatic) and low-speed compression adjustments, as well as rebound speed adjustment and preload by notched crown and counter-crown (adjustment key included).

The spring color can be selected in either black or navy blue. Or, at the customer's request, with the desired spring color.

In the case of the Wilbers 641 + HPA model, the rider can quickly, easily, and comfortably adjust the tension (preload) of the rear shock absorber spring to adapt it to weight or load changes on the bike (passenger, luggage, saddlebags, tank bags, etc.).

After the purchase, the customer is contacted to define the shock absorber according to their characteristics.