The RPF1RS is everything you love about the RPF1 with the addition of a deep face creating a large lip. The RPF1RS is made in Japan and has been in the works for years. We at Enkei wanted to make sure we created a “big lip” RPF1 that lived up to the strong structural quality you expect from us. It is available in low insets and even a negative inset for the 11? wide version. The twin spokes on the Enkei RPF1RS achieve better stress dispersion on curves, hard braking, and extreme race driving. CENTER DESIGN: Enkei’s pocket design around the bolt circles increases rigidity and keeps the wheel cooler during aggressive race driving. MAT PROCESS: Shaping by the MAT process reduces wheel weight by 10%-15%. Every pound of unsprung weight savings has the effect of reducing overall vehicle weight by 20lbs.