Twisted Steel Long Tube Headers Features: Constructed out of 16-gauge, 1-3/4" mandrel-bent stainless steel tubing for unrestricted flow
4-to-1 formed merge collectors eliminates flow-block turbulence
Optimized tube lengths improve flow and performance
100% hand MIG-welded construction ensures optimal strength and durability
Y-Pipe Features: Constructed out of mandrel-bent stainless steel tubing
True 2-to-1 mitered merge collector eliminates dead zone for improved flow
Mandrel-bent 3" stainless steel tubing for better flow and added power
Incorporates high-Flow, 48 state-legal 400 cell catalytic converters for improved flow
Test Results: Added an astounding +12horsepower and +13lbs. x ft. of torque as verified by our in house dyno
Long Tube Headers
Formed Collectors: 4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.
Optimized Tube Lengths: Tube lengths are optimized for true pulse control technology which improves flow and performance.
Dual High Flow Catalytic Converters: This system utilizes 400 CPSI (cell per square inch) 48-state legal catalytic converters are used for maximum flow.
Constructed of mandrel-bent 3" stainless steel piping which transitions into single 3-1/2" piping to reduce back pressure and improve flow.
True Merge Collectors: Eliminates dead space that can cause turbulence and hinder flow that formed collectors are prone to produce.
Leak-Free Seal: High quality OE style flanges and band clamps are used for a complete 360 degree sealing surface.
Hassle-Free Installation: The performance header and y-pipe are designed to fit in the stock location incorporating the OE hanger, flange and O2 sensor locations.
Note: 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.Product Desription: Headers and Y-Pipe Kit, 1-3/4 in Primary, 3 in Collector, Converters Included, 3 in Y-Pipe, Stainless, GM Fullsize Truck 2014-15, KitPit Stop USA offers aFe Power Twisted Steel Long Tube Headers & Y-Pipe w/ Cats (Street) - GM Silverado/Sierra 1500 14-16 5.3L 48-44005-YC at low everyday prices. Be sure to check out all our products from aFe Power including aFe Power Headers.