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QA1 28A Series Steel Pressurized Gas Monotube Shock, IMCA Approved
QA1 28A Series Steel Pressurized Gas Monotube Shock, IMCA Approved

QA1 28A Series Steel Pressurized Gas Monotube Shock, IMCA Approved

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QA1 28A Series Steel Pressurized Gas Monotube Shock, IMCA Approved
QA1 28A Series Steel Pressurized Gas Monotube Shock, IMCA Approved
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Part # 72128A
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Important Messages:

  • This product is discontinued.
  • This item ships directly from the manufacturer. It may take an additional business days for QA1 to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
  • This item 72128A is made to order. It will be shipped from our warehouse when it is produced.

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These Circle Track Expanded Gas Chamber Shocks are what you need to succeed.  QA1’s 28A Series shock is the same as the 28 Series, but with the gas pressure tuneability feature disabled per IMCA regulations.

Sealed Hyperscrew
The 28A Series shocks feature a sealed hyperscrew. The gas pressure of these shocks is only adjustable by QA1 and QA1 Authorized Rebuilders per sanctioning body, like IMCA, and track rules.

Electroless Nickel Plated Body
The 28A Series is electroless nickel plated on the inside and out, encapsulating the base metal to completely seal out the elements and creating a durable, smooth finish on the inside for a consistent performance. This nickel plating provides excellent corrosion resistance, superior hardness, consistency and lubricity.

Expanded Gas Chamber
The 28A Series also features an expanded gas chamber. This expanded gas chamber eliminates the unwanted rod force increase when the shock is compressed.

Linear, Digressive and Low Speed Super
Digressive Valving Available

Digressive is the classic monotube shock feel. Linear provides a more stable car and allows the driver to feel the car better. Low Speed Super Digressive is an excellent choice when maximum rebound force is needed for big, low speed, tie-down applications

28A Series Shock Guide (Link)

Some parts are not legal for use in California or other states with similar laws/regulations

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