Silver Eibach 700 Pound 12" Tall Spring For 3" Diameter King, Sway-A-Way Or Fox Coil Over Shocks Billet Aluminum Mounts If you take the outside

If you take the outside diameter of the tube and subtract the wall thickness twice then you'll get the inside diameter dimension of your tubing

Ultra-Light directional vane rotors provide an excellent balance of efficient cooling and lower rotating mass on hard braking dirt tracks or rear axle service on pavement cars

type II bright dip anodized finish

Heavy duty 5-3/4" T-bolt clamps provide uniform sealing pressure for a positive

Barbed side is for 1-1/4" INSIDE diameter hose

Silver Eibach 700 Pound 12" Tall Spring For 3" Diameter King, Sway-A-Way Or Fox Coil Over Shocks Billet Aluminum Mounts If you take the outsideIf you're going to use this as an upper spring on a dual rate coil over shock such as King, Fox, or Sway A Way, it's important to set the position of your crossover ring so the spring divider hits the cross over ring BEFORE the upper spring crushes itself (coil bind). See diagram below. Eibach Part Number: 1200. 375. 0700s 1200 375 0700s Length: 12 Inches 305mm Inside Diameter: 3. 75 Inches 95mm Spring Rate: 700 lbs inch 12. 5 kg mm 123 N mm Full