Shock Absorber Type 640 Road Twin shocks a relatively hard spring is

a relatively hard spring is fitted from the factory

With pivoting compression tank

Our premium 623 shock features an external compression reservoir connected via a flexible steel hose

Made from premium chrome-silicon steel and supplied with ABE

Shock Absorber Type 640 Road Twin shocks a relatively hard spring isThe basic edition of the Wilbers Adjustline mono shock absorber features the same advanced technology as the more complex versions. The only difference is the omission of the compression reservoir, and therefore the ability to adjust high and low speed compression. Despite this, the shock absorber makes no compromises in terms of response behavior or durability. Its radial piston design, wet run operation, and Teflon guided self aligning bearings