Enkei Kojin 18x9.5 15mm Offset 5x114.3 Bolt Pattern 72.6mm Bore Dia Matte Black Wheel. Product Sub Category : ENK Kojin Wheels. Enkei wheels are engineered to pass rigorous testing. Enkei's Spec-E test setting requires a higher drop point in the impact test and 20% more cycles for the rotary bending fatigue and dynamic radial fatigue tests than JWL standards.