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WFF-521 Grand Rock Exhaust Westfalia 5”x21” Flex


1 in stock

The ultimate in heavy duty Flex Pipes. Made from 304 stainless, it will outlast all other pipes! by far!

$72.99 $92.86 Each

1 in stock

WFF-521 Grand Rock Exhaust Westfalia 5”x21” Flex

WFF-521 Grand Rock Exhaust Westfalia 5”x21” Flex


Westfalia by Grand Rock stainless steel flex pipes are the best stainless flex ever manufactured!

Comes in pre-cut (cannot be cut) lengths for easy installation.


  • 5” Inside Dimension x 21” long
  • .018” thick
  • Made From 304 Bright Stainless Steel
  • Moves easily in all directions
  • Torsional Movement (twists)
  • 4-ply construction is virtually leak-free & low emission
  • Pre-cut lengths to fit any flex application — eliminates cutting
  • Individually boxed with installation instructions
  • Longer life than other flex types
  • Has an extension Strap Gauge perfect installation length which takes guesswork out of proper installed length (discard after installation) flow directions on strap
  • Do not cut this product
  • K180-1637-21
SKU: GK-WFF-521 Categories: , , Tag:


Grand Rock Exhaust

Dsuban Spring Service is a proud distributor of Grand Rock Exhaust who manufactures the widest selection of quality exhaust products.

Weight 5 lbs

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