high performance harley davidson modifications, cylinder head design, twin cams, evolutions, evos, shovelhead, fuel injection tuning, caruretor tuning, dyno tuning, engine rebuild, engine rebuilds, harley engine rebuilds
The Harley-Davidson ® High - Performance Cylinder Head Design and Engine Modification Shop
Complete Engine Rebuilds - Fuel Injection and Carburetor Tuning - Chassis Work - Parts - and More ..
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Harley-Davidson® High-Performance & Reliability Specialists
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jet airstack, velocity stack, air cleaner, air cleaner backing plate, harley backing plate, backing plate for harleys
air cleaner backing plate, air stack, velocity stack, jet air stack, j.e.t. air stack, high performance air cleaner system, air cleaner, johnson engine technology

*NEW J.E.T. AirStack:

FEATURES:

  • INTERNAL VENT LINES
  • 1 1/2" LONG VELOCITY STACK
  • STAINLESS STEEL BREATHER BOLTS
  • RE-USEABLE AIR CLEANER
  • VACUUM VENT SYSTEM
J.E.T. AirStacks for 2006 and later Harley® models will be out of stock until 1/31/07, call to reserve yours today (401.596.9507)

INTERNAL VENT LINES:

  • No hoses to dry rot & crack
  • Eliminates oil leaks
  • Looks great...you can't see them
Below is a bird's-eye-view of how the J.E.T. AirStack works.  The orange arrows indicate rocker box vent air, the blue arrows indicate intake air, and the dotted lines indicate the internal design of the velocity stack and breather vents. 
The construction of the velocity stack enables the engine to pull more of a vacuum out of the engine which in turn allows the piston rings to seal better.  This then improves combustion efficiency, horsepower, and torque.  Click on the image for a larger view.
air stack, jet air stack, air cleaner backing plate, j.e.t. air stack, velocity stack, high performance air filter backing plate, high performance air cleaner backing plate, backing plate, air cleaner, carburator, intake

1 1/2" VELOCITY STACK:

  • Increased signal strength through throttle body
  • Greatly reduces reversion
  • Increased torque and horsepower
  • Eliminates gas smell and gas in air cleaner
  • Eliminates oil in the air cleaner

STAINLESS STEEL BREATHER BOLTS:

  • NO RUST
  • Straight shaft breather bolts provide more volume for breathers to help maintain vacuum in engine
NOTE: A CV 40 carb on engines that make over 80 HP can not use the velocity stack in the J.E.T. AirStack because the carburetor already has too much velocity.  J.E.T. has resolved this issue by coming up with the "ShortStack."  This enables the J.E.T. AirStack to work on CV 40 applications that make 80 HP plus.  Please make sure you specify what CV carburetor you are running when ordering your J.E.T. AirStack.

AIR CLEANER:

  • Cleanable element
  • Lasts as long as your motorcycle
Application: Description: Part #: Cost:
99+ Twin Cam Carbureted
01-05 FX EFI
02-05 FLT EFI
J.E.T. AirStack, 1.5" velocity stack, internal vent lines, washable air cleaner
MADE IN USA
AP.200 199.00
99+ Twin Cam Carbureted
01-05 FX EFI
02-05 FLT EFI
J.E.T. AirStack, 1.5" velocity stack, internal vent lines, washable air cleaner, 2.75" reverse taper air cleaner (requires round EVO style cover)
MADE IN USA
AP.201 224.00
99+ Twin Cam Carbureted
01-05 FX EFI
02-05 FLT EFI
J.E.T. AAirStack, 1.5" velocity stack, internal vent lines, washable air cleaner, 1/2 13" breather bolts (requires head vent to be drilled and tapped to 1/2-13)
MADE IN USA
AP.202 199.00
99+ Twin Cam Carbureted
01-05 FX EFI
02-05 FLT EFI
93-00 EVO Carbureted
J.E.T. AirStack, 1.5" velocity stack, internal vent lines, washable air cleaner, 2.75" reverse taper air cleaner.  (requires TC head vent to be drilled and tapped to 1/2-13)
MADE IN USA
AP.203 224.00
All J.E.T. AirStacks come complete with installation instructions and hardware.

VACUUM VENT SYSTEM:

  • Cylinder head vent lines exit at the venturi of the velocity stack.  This system uses the intake track to generate more vacuum inside the engine resulting in:
 
  • More Horsepower
  • Better Ring Seal
  • Drastic Reduction in Oil Consumption

 

 

Download a complete .PDF of order form and fax in
(If you use the online method we will need to call you for credit card information, if you download the .pdf all information we need is available for processing on this form.)

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