Product Summary

Hobby Stock, Stock Car, Vintage Oval Racing, Black Zinc

  • Your choice of valving, assembled in house at Speedway Motors
  • Twin Tube
  • GM Mid & Full Size Front (Short)
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Key Specs

Shock TypeTwin Tube
Shock AdjustabilityNon-Adjustable
Shock Body MaterialSteel
Body Diameter2.0625"
Shock Body TypeSmooth
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Need To Know

Made to Order

This custom item will ship when completed

Quick and Easy Returns

Return Policy

QA1 72158930 Details

Formerly known as 51 and 53 series shocks, the 5Q series is a large body steel shock. This is the GM Mid & Full Size style with stock mount ends. 

Small details add up to provide great overall performance. The black zinc coating ensures a very consistent finish, creating a tight seal every time. The scalloped base loop increases clearances in tight areas like upper control arms and shock mounts. Pistons are made of high-quality raw aluminum, minimizing variations that can be found in anodized parts. You can valve the shock with bleed shims or drill out bleeds to maximize tunability.

  • Your choice of valving, assembled in house at Speedway Motors
  • Twin Tube
  • GM Mid & Full Size Front

Note: This shock is custom valved and assembled by our expert staff. Due to its custom nature, it cannot be returned for a refund. This shock has a 1-2 business day build time before shipping.

Please provide shock valving specification requirements in the 'Add Comments and Delivery Instructions' box on the Shipping Method selection screen at checkout.

How to Read Your Shocks:

To make your selection process easier, here's an example of how to interpret your shocks using our part numbering system:

Example Part Number: 81-1-3-8

81 Series, 1 = Front mount, 3 = 3-valve compression, 8 = 8-valve rebound.

Example Part Number: 81-2-4-4

81 Series, 2 = Rear mount, 4 = 4-valve compression, 4 = 4-valve rebound.

Guides & Documents

QA1 72158930 Specifications

KEY SPECS
MFG. Part #72158930
BrandQA1
Shock TypeTwin Tube
Shock AdjustabilityNon-Adjustable
Shock Body MaterialSteel
Body Diameter2.0625"
Shock Body TypeSmooth
Shock Body SizeLarge Body
Compression ValvingCustom
Rebound ValvingCustom
Upper Shock MountStud
Lower Shock MountT-Bar
Extended Length Range12.00" to 12.99"
Extended Length12"
Compressed Length Range8.00" to 8.99"
FinishBlack Zinc
Compressed Length8.63"
Gas ChargedNo
GENERAL
RebuildableYes
Sold in QuantityEach

Questions & Answers

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