Maintec's 3-to-1 header system with downpipes is constructed using CNC mandrel bends and machined flanges and TIG-welds for the ultimate in performance. Laser guided flange seal ensures superior quality and a perfect fit with every header system made. Features: Available in 100% race-type SUS-304 semi-brushed stainless steel, CNC mandrel bends with robotically-welded fittings, perfect fit equal length primary piping ensures optimum tuning, unique merge collector design ensures smooth exhaust gas flow, comprehensive installation instructions, all necessary hardware needed for install included. Please note: This system is bolt-on and eliminates the use of stock catalytic converters. *This is a custom order item which comes from overseas and can take a few weeks.