4-2-1 2-PIECE HEADER KIT

4-2-1 2-PIECE HEADER KIT. 4-2-1 2-PIECE HEADER KIT The perfect combination of performance superiority and installation ease! The best average power gains, best peak power and best torque—tests prove it! Big gains—up to 6.8 HP and up to 4.6 ft./lbs. of torque! Perfect-fitting, top-performing header—the results of the CNC-machined flanges, TIG welding and mandrel-bent tubing. The flanges and factory-style O-rings ensure a leak-free seal. Threaded flanges simplify installation. CARB exempt. Shipped separately from factory. NOTE: SKU numbers ending in F are factory shipped and may take a little longer to reach you.

$349.99