 The rear brake is a single 220 mm disc with a Brembo twin-piston caliper.The front & rear rims are lightweight, 5 spokes, cast aluminum rims are 3.50x17 up front (3.0x17 on the older models) and 4.50x17 out back that require tires of 120/60x17 and 150/60x17, respectively.The RS gauges feature a digital instrument panel that gives the rider a variety of information.