Our friends at Supercross have dug into their vault and are offering Racer X readers a discount on a hand-autographed Ricky Carmichael #4 Oakley Chevrolet Camping World Truck Series Action diecast by Motorsports Authentics. Supplies are limited, so be sure to visit supercrosssuperstore.com [direct link] today and enter the coupon code RacerX to receive $50.00 off your purchase.