⚠️ (THIS PRODUCT IS FOR OFFROAD & RACE USE ONLY)Not 50-state compliant — may not be legal for street use depending on your state's emissions laws. See our Off-Road Use Disclaimer for full details.Rvng 4.5” B58 Race DownpipeWith the Rvng 4.5" downpipes back pressure is significantly reduced. Our downpipe features a full 4.5″ stainless steel design as well as a CNC 304 grade stainless steel flange that offers a smooth transition from the turbo to the mid pipes. All Rvng downpipes are hand crafted from SS304 grade stainless steel and include a lifetime warranty as well as our “No Hassle” satisfaction guarantee (includes fitment) Made from hand crafted, tig welded SS304 grade stainless steel. Cnc tube bended for a Smooth radius bends to decrease turbulence and increase flow as well as a perfect fit guaranteed CNC SS304 Stainless Steel Flanges. Gains anywhere from 15whp-20whp without tune and up to 25-30whp with tune. RVNG Lifetime Warranty This item fits the following BMWs: All Gen 1 & 2 B58's (Including Toyota Supra)
