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Twisted Steel Headers & Y-Pipe for the 09-13 GM Silverado/Sierra 1500 V8 (GMT900)

An image of a GM Truck


aFe is proud to introduce all new Headers & Y-Pipe  products for 2009-2013 GM Silverado/Sierra 1500 and SUV’s (GMT900) with V8 engines. aFe now offers performance Twisted Steel Headers and a high-flowing Mach Force XP Y-pipe for value added performance for your GM truck. When combining these two parts, the system in testing on our in-house dyno added +21 horsepower and +26 lbs. x ft. torque.

An image of the GM headers

 (Twisted Steel Headers  P/N 48-44001)

An image of the y-pipe for the GM truck

(Y-Pipe w/ mitered merge collector P/N 49-44050)

Twisted Steel Headers

The performance short-tube headers are constructed of 1-5/8” 16 gauge mandrel-bent tubing for strength and durability. A 4-to-1 formed collector is used on the header to decrease turbulence and increase exhaust velocity for maximum performance. This massive torque monster y-pipe utilizes high-flow 49 State Legal catalytic convertors which keep the system a true bolt-on package free of check engine lights.



Formed Collectors:

4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.


Heavy Duty Flanges:

3/8" thick 1-piece flanges prevent warpage to ensure a leak-free seal over the life of the vehicle.


Factory Mounting Locations:

These headers retain your stock catalytic converters and are a direct bolt-on installation which requires no cutting or drilling to provide a hassle-free installation.


True Merge Collector:

True 2 to 1 mitered merge collector eliminates dead space that can cause turbulence and hinder flow that formed collectors are prone to produce. 

  3" - 3.5" Y-Pipe Stainless Steel Exhaust System w/ Cats


Heavy Duty Construction:

Mandrel-bent 3" piping transitions into 3-1/2" piping for better durability.


Leak-Free Seal:

High quality OE style flanges and band clamps are used for a complete 360 degree sealing surface.

Twisted Steel Headers 



Interested in upgrading to a combo pack of these two parts?  Check out P/N 45-00102. Not only do you get the full performance package you also benefit from the cost savings.  The combo package will also fit 2009-2013 GM Gas SUV's V8-(GMT900).

An image of the headers and y-pipe for GM trucks

Twisted Steel Header also fits the following applications:

2002-2013 GM Silverado/Sierra 1500

Gas SUV's V8 with (GMT800/900) chassis.

For further information and pricing  click here or contact our Power Professionals at 888-901-7693.

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