This one piece duplicate of the factory Porsche 911 RSR bumper is designed to be used with Turbo Width or 11" rear quarter panels. It is designed with the "Popular" shorter bumperettes and dual exhaust cut outs. Average Weight is 10 lbs. Fits GT Racing fenders and flares (part #35-T11, 35-12.5, #39 and #39 T-11).