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aFe Power Twisted Steel Header & Y-Pipe 409 Stainless Steel w/ Cat GM Silverado/Sierra 1500 09-13 V8 (GMT900)

$3,793.72 NZD
SKU 48-44001-YC
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Factory Mounting Locations:
A direct bolt-on installation which requires no cutting or drilling to provide a hassle-free installation.

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 IN thick 1-piece flanges prevent warpage to ensure a leak-free seal over the life of the vehicle.

Optimized Tube Lengths:
Tube lengths are optimized for true pulse control technology which improves flow and performance.

Race Disclaimer:
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. 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 and federal laws.

  • 1-5/8 IN 16-gauge 409 stainless steel mandrel-bent tubing for unrestricted flow.
  • 4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.
  • Optimized tube lengths improve flow and performance.

Y-Pipe Features:

  • True 2-to-1 Mitered merge collector eliminates dead zone for improved flow.
  • Mandrel-bent 3 IN Piping Transitions into 3-1/2 IN Piping For Better flow and added Power
  • Incorporates High-Flow, 400 Cell Catalytic Converters For Better Flow

Combo:

  • In testing, resulted in an astounding +21 HP and +26 lbs. x ft. of TQ when combined as verified by our in house dyno.
  • Savings when purchased as a package!

Vehicle Applications:

Year Make Model SubModel Engine Fuel
2010-2013 Chevrolet Silverado V8 4.8L Gas
2009-2013 Chevrolet Silverado 1500 V8 5.3L Gas
2009-2012 GMC Sierra V8 4.8L Gas
2009-2011 GMC Sierra V8 5.3L Gas