Body: 2" Seamless Extruded Tube Conventional Rod: Centerless Ground, Case Hardened, Chromed and Super Polished Seal: Aluminum 1 Peice/Rod Guide Piston: 46mm Bilstein Racing Piston Valving: "Self Adjusting" Deflective Disc Independent Rebound & Compression Oil: Bilstein Fade Resistant High Temperature Racing Oil Rod Ends: 1/2" Teflon Uniball w/ Eye Ring Finish: Yellow or Electroless Nickel Coilover Hardware: 2 1/2"