Grand Rock PowerFlow Dual Stack Kits for Ford Powerstroke, Dodge Cummins, and GM Duramax
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Grand Rock PowerFlow Dual Stack Kits

Grand Rock PowerFlow Dual Stack Kits for Ford Powerstroke, Dodge Cummins, and GM Duramax Vehicles
Grand Rock introduces their PowerFlow Dual Stack Kits. A high performance diesel exhaust system with the "Big Rig" look and style for your truck. PowerFlow Dual Stack Kits are a true 5"dia. from cat to stack exhaust system, with a 5" dia. hole thru the bed required.

These kits were designed as a "No Muffler" exhaust system and feature AccuSeal clamps for superior joint sealing. Choose from the three most popular Dual Stack kits available in straight, miter cut or curved.

All stacks are 36" in length and feature high quality chrome plating and available in 5" or 6" dia., chromed rain caps & stack shields sold separately. Each kit includes a chromed heat shield for the bed cross over pipe for cargo protection. Built in the USA with a one-year warranty.

Why buy the POWERFLOW exhaust system?

  • Precise fit, no need to hammer or "adjust" anything
  • Remetalized, coated weld area, no premature rust on seams
  • deburred 1/2" rod hangers, no sharp edges or burrs (33% thicker)
  • Welded double saddle, flattened bolt hangers, won't crush pipe
  • All brackets are zinc plated to prevent rust
  • POWERFLOW uses AccuSeal clamps to join pipes together, these don't crush the pipes, exhaust joints are serviceable
  • All tubes are deburred and cleaned, no sharp edges or saw chips
  • Beautiful durable chrome tip with a polished stainless clamp that follows the OE angles
  • Shipped in 1 heavy duty box to reduce freight costs and damage
  • Bottom line, a MUCH better kit overall. Fit, finish and quality makes the POWERFLOW kit a better value
Grand Rock PowerFlow Stack Diagrams
Straight Top for Ford Powerstroke, Dodge Cummins, and GM Duramax

Mitered Cut Top for Ford Powerstroke, Dodge Cummins, and GM Duramax

Curved Top for Ford Powerstroke, Dodge Cummins, and GM Duramax

Stack Kit Accessories for Ford Powerstroke, Dodge Cummins, and GM Duramax
 
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