Stage 4 model is derived directly from our top-end Stage 5 model, with which it shares most of the same components. It features a single external compression adjustment knob that controls the low-speed compression damping that is combined with an internal high-speed blow-off circuit which relieves peak pressure upon impacts to achieve race-level performance in a package that is more accessible and easier to adjust. 

Stage 4 shocks are custom built to your exact specifications (rider weight, riding style/skill level), also they are custom setup to match your model/style of a-arms and swing-arm/linkage. This extra customization allows for the best ride and quality that money can buy.