Many manufacturers in the near-luxury and luxury market have a performance auxiliary that provides visual and mechanical upgrades available off the showroom floor. For Acura, "A-Spec" fills that bill. The A-Spec concept from 2005 was based on the newly- introduced '05 RL sedan. Available upgrades included a redone, sloping front clip, fender flares, reshaped rocker panels, new rear spoiler, restyled rear bumper, 20-inch alloy wheels and Michelin Pilot Sport rubber. A revised performance suspension, Brembo brakes and drilled rotors were added. Inside the cockpit were premium leather material, a two-tone headliner, wood steering wheel and wood shift knob trim.