This Gasket is an High Quality OEM Head Gasket that has been CNC Bored to 85mm for overbored motors. OEM Gaskets are the still the best parts for your SUZUKI GSXR-1000 and are a must for your high performance engine. Designed to factory specifications and sized for race engines this gasket measures .023 in thickness. Thinner head gaskets are not recommended for Nitrous or Turbo Applications.