SKU: 727124810

QA1 Pro Rear Weld-In Coil-Over System - Double Adj. - 12in x 150lbs/in - 3.25in Tube - Aluminum

Sale price$572.85 Regular price$636.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

QA1 Pro Rear Weld-In Coil-Over System - Double Adj. - 12in x 150lbs/in - 3.25in Tube - AluminumUpgrade your rear end with QA1's Pro Rear System. Available in double adjustable, single adjustable and ride sensitive valving non adjustable options, each adjustment has been carefully defined to provide the ideal force curve to maximize performance. With evenly spaced valving changes throughout the adjustment range, there are no jumps when adjusting between any two clicks. These Pro Rear Systems are commonly used in drag racing, street performance

Upgrade your rear end with QA1's Pro-Rear System. Available in double adjustable, single adjustable and ride sensitive valving non-adjustable options, each adjustment has been carefully defined to provide the ideal force curve to maximize performance. With evenly spaced valving changes throughout the adjustment range, there are no jumps when adjusting between any two clicks. These Pro-Rear Systems are commonly used in drag racing, street performance and street rod applications. Available in simultaneous compression and rebound single adjustable (DS), independent compression & rebound double adjustable (DD) or ride sensitive non-adjustable valving options. These coil-over shocks are made with lightweight aluminum and offer ride height adjustability. All mounting and spring mounting hardware included. Revalveable and rebuildable by the QA1 factory or QA1 Authorized Service Centers, they are 100% dyno tested and serialized and made in the USA. Kit includes: (2) Proma Star Shocks or Aluma Matic Shocks (2) Linear or Variable Rate Springs.

  • Available with MOD Series, double, single or non-adjustable valving options
  • Excellent DIY solution for drag, street performance & street rodders alike
  • All mounting hardware included
  • Made in the USA
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 727124810

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4.5 ★★★★★
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Verified Purchase
Elsie Flores
New York, US
★★★★★ 5
It’s just an air filter
Size: CA12290-Premium
It’s exactly how it’s pictured. Not sure what else to say it’s an air filter. I guess it’s doing its job
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
G
Verified Purchase
gene black
Charlottesville, US
★★★★★ 5
Good price
Size: CA12290-Premium
Fit as expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
R
Verified Purchase
Ricardo Baker
Pawtucket, US
★★★★★ 5
Very good filter
Size: CA12290-Premium
Very good filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
J
Verified Purchase
John
Fort Morgan, US
★★★★★ 3
Not 99.9 %
Size: CA12290-Premium
Only 98% efficient. Says 99.9 in the ad. There is a huge difference between those two efficiencies.
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Reviewed in the United States on February 8, 2026
M
Verified Purchase
Mark rowan
Cuba, US
★★★★★ 5
Accord
Size: CA12290-Premium, Size: CA12290-Premium
Fit was perfect on 2018 accord, delivery fast and packaging intact.
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Reviewed in the United States on August 18, 2025

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