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SuperMaxx 99-06 Chevy 1500 Truck/SUV/Hummer 4.8L/5.3L Tubes w/ Cats

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SuperMaxx 99-06 Chevy 1500 Truck/SUV/Hummer 4.8L/5.3L Tubes w/ Cats

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Please note the following about this product:

  • This item is sold as a set.
  • Ground Shipping Only - Can't Ship Air.

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Bolt-on an additional 17 HP** over the factory exhaust system! Dynatech® SuperMaxx stainless steel exhaust systems are engineered to give your Chevy Silverado/GMC Sierra 1500 or Hummer H2 V8 maximum performance both on and off road. Designed to be a direct replacement fit for restrictive factory exhaust and catalytic converter systems, these systems are a great way to get that extra power you are looking for.

  • System Tube Size: 2-1/2"
  • Material: T-304 Stainless Steel
  • OBD II Compliant: Yes
  • Hardware Included: Gaskets, Bolts, O2 Extensions
  • Fit: Direct Bolt-Up to any factory or aftermarket cat back

**Dyno tested using a factory cat-back/muffler in a 5.3L application. 

4.8L & 5.3L Instructions (PDF)

6.0L Instructions (PDF)

Item Details

'Fits: ''00-''06 Hummer H2
''99-''06 Chevy/GMC truck/SUV'

Notes

  1. Intermediate pipes come with Square O2 extension cables. Some trucks came equipped with Trapezoidal shaped O2 extension cables. If you have Trapezoidal shaped extensions, you will also need to order extension cable 311-88635300F (listed).
  2. These products are intended for racing and off-road applications. Not legal for sale or use in the state of California, nor in states which have adopted California emissions standards.

Specs

  • 3/8" laser-cut and machine-ground flanges for a long-lasting, tight seal
  • Computer-designed collectors for maximum air flow
  • True bolt-in — no cutting or welding
  • "OEM-style" triple-layer stainless steel gaskets included for long-term, leak-free service

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