*This item is not available for purchase in California* BLOX Racing is proud to introduce its UEL (unequal length) headers for FR-S and BRZ performance enthusiasts. Each UEL header features CNC-mandrel bent tubing. Each header is then expertly TIG-welded by hand. Although handmade, each is still manufactured to precise standards and specifications ensuring fitment and performance across each batch. Masterful TIG-welding maximizes strength and durability against cracks and exhaust leaks. The final product quality and finish are undeniable and arguably the best in the market. The properly sized header tubing and 4-into-1 design optimizes exhaust flow and produces the best useable power and torque gains across the RPM range. Throttle response is also greatly improved. BLOX Racing UEL headers are available in T304 stainless steel and GR1 Titanium. BLOX Racing is setting new standards for high performance products with show quality appearances. Just take a look and you will completely agree. FOR OFF ROAD USE ONLY DO NOT WRAP TITANIUM HEADERS or EXHAUST T304 UEL Header Specs T304 16-gauge stainless steel CNC mandrel bends Hand TIG welded 4-1 header 1.75" OD tubing size 2.25" OD collector size Comes with 2-bolt Gasket, nuts and bolts Photo may not represent the actual product.