aFeâ€™s Twisted Steel long tube header and connection pipe deliver +24 HP and +27 lbs. x ft. torque over the factory. This system is constructed with 1-3/4" primary to 2-1/8" secondary, and 2-1/2" mandrel bent, 304 stainless steel, brush finished tubing for greater exhaust flow and longevity. 100% hand TIG-welded by certified craftsmen for proven durability. The long tube header incorporates a 6-2-1 Tri-Y designed. These features create a smooth transition to eliminate dead zones and improve flow. High quality band clamps and hardware to provide a quick, hassle-free installation.
+24 HP / +27 lbs. x ft. Torque max gains (Tested on a 2005 Nissan Patrol (Y61) I6-4.8L 4-Door Automatic).
Paired opposite firing cylinders with equal, specifically tuned primary lengths maximizes scavenging and increases torque throughout the power band.
Stainless Steel Tubing & Laser Cut Header Flanges:
High grade 304 stainless tubing with a uniform brushed finish provides a beautiful look and high resistance to corrosion. Laser cut 304 stainless steel header flanges provides superior sealing at the head surface.
High-Flow Catalytic Converter:
This system utilizes a high flow, 400 cell catalytic converter for maximum flow.
100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.
Factory Mounting Locations:
2-1/2" flanged connection pipe mounts directly to OE mounting location.
High quality band clamps are used for a complete 360-degree sealing surface.
This is a "Race Only" product that is to be used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state or federal laws. This system is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle.
aFe Twisted Steel Headers are engineered and manufactured in our Corona, California manufacturing facility.