Bilstein Blackhawk 9300 Series Or 9100 Series 7W Shock Absorber Oil 1 Gallon Bottle

A common question that we get asked is "how much shock oil do I need to buy?". This tool will help you determine how much oil to buy PER SHOCK. It only ESTIMATES the amount of oil you'll need to purchase, NOT how much oil you actually put into the shock. It does not compensate for the seal head, hose, shaft, bypass tubes or other parts in the shock that all take up volume. Distance above the IFP is the length before the piston bottoms out. Some shock builders completely bottom out their IFP and some builders set their IFP an inch or more before being bottomed out to have some oil in the reservoir chamber.

Input all your measurements in inches. Use decimals instead of fractions. For example 3.5 not 3-1/2