Ladies R4 Rib ProtectorThe R4 Ribtec helps drivers cope with the most demanding rubber covered tracks which place exceptional forces on the ribs and body. This latest R4 model improves the protection given by the Ribtec 2 and P1 due to a multi composite construction. This panel construction spreads the load in such a way that it keeps individual ribs from moving independently. At the same time the R4 does not dig into the driver at the edges and does not create any extra