Forgeline GA1R Performance Wheel Set 2015 2020 BMW M3 M4 D750 0087 GA1R BLK lug nuts and bolts Folded Edge Tip Shape Round Jones Folded Edge Tip Shape Round Tip Material Stainless Steel Tip Finish Polished Inlet Connection Type Clamp On Tip Diameter 4 Subtitle Cat Back Exit Style Quad Split Rear Series Competition Valve Included Yes Muffler Type Straight Through Muffler Size 5x8x11 Muffler Finish Polished Main Piping Diameter 3 Pipe Material Stainless Steel Introducing Terminator for Chrysler GEN III HEMI engines from 2003 2013+ such as the 5 Lightweight (Front: 22 lbs Each wheel is cut from a single solid block of aluminum creating a very strong wheel that is also light in weight