[ STS/SLS ] FRONT 303 mm + REAR 297 mm Premium OE 5 Lug [4] Brake Disc Rotors CLICK *sold by Callahan* ABOVE! 2100+ Customers rate Callahan 4.9/5 Stars! GUARANTEED ONLY to fit vehicles in Description - See below. Original design ensures proper fit. INCREASED STOPPING POWER due to improved heat dissipation. Guaranteed to perform better or equal to original parts. FULLY ASSEMBLED and ready for bolting. No modification required. FREE ONE-TWO DAY SHIPPING for most states!