Header 911 2012+ (991) with 200 cell HD catalytics

For 2012+ 911 (991) with OEM or valved Porsche sport exhaust (PSE). Facts: - Equal Length Headers with Motorsports Merge Collector. - 200 Cell HD German HJS Tri Metal Sport Cats. - 2 3/4 Tubing (70mm) - Reduces thermal stress on the motor. - Made in Germany Power with software and BMC filters: - 991 (3.4L) = + 25 crank Hp (15 kw) & + 18 crank torque (20 Nm) - 991S (3,8l) = + 25 crank Hp (15kw) & 18 crank torque (20 Nm) Our latest development for the 991 is aimed at those who are looking for more torque in the mid range, a rich, deep exhaust growl. These headers contain the latest HJS cats, they are nicknamed "HD" for high durability matrix design catalytic converters. They have a SM-matrix (winding of three flat and corrugated foils) and a special connection to the matrix sheath, which equates to extremely high durability for track and street use._x000B__x000B_This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.