SKU: 57134746635

QA1 Pro Rear Weld-In Coil-Over System - Single Adj. - 12in x 130lbs/in - 3in Tube - Aluminum

Sale price$448.20 Regular price$498.00
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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

QA1 Pro Rear Weld-In Coil-Over System - Single Adj. - 12in x 130lbs/in - 3in 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 horse 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 horse 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 Compresion and Rebound Single Adjustable (DS), Independent Compression & Rebound Double Adjustable (DD) or Ride Sensitive Non-Adjustable (ALN), Coil-Over, Lightweight Aluminum, Ride Height Adjustable, Spring Mounting Hardware Included, 100% Dyno Tested and Serialized, Revalveable and Rebuildable by the QA1 Factory or QA1 Authorized Service Centers, Precision Machined Aluminum Piston with PTFE Piston Band, 5/8" Centerless Ground, Hard Chrome Plated, Solid Piston Rod, Three Step Sealing System, Available to Fit 3" or 3.25" Diameter Axle Tubes, Made in the USA, , Kit includes:, (2) Proma Star Shocks or Aluma Matic Shocks, (2) Linear or Variable Rate Springs, All Mounting Hardware.

  • 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: 57134746635

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4.9 ★★★★★
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Ditte Wager
Cuba, US
★★★★★ 5
Great fit
Color: Crisp White, Size: Small
Shirt is great. Nice fabric.
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Reviewed in the United States on May 22, 2026
M
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Maren M
Waukegan, US
★★★★★ 5
Good quality
Color: Crisp White, Size: Medium
Fit is great, feels like a durable material. Generally a very nice shirt! Bought this for a 5’ 10” male who is 150lbs. Medium was just right, with a little bit of breathing room.
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Reviewed in the United States on May 14, 2026
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Ricardo V Rivas
Boise, US
★★★★★ 3
Good for an emergency only
Color: Crisp White, Size: X-Large
Shirts are good overall, but the material is too light ... if you are hairy or have dark skin, you need an undershirt; otherwise, it looks like the shirt is dirty.
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Reviewed in the United States on April 14, 2026
J
Verified Purchase
John
West Palm Beach, US
★★★★★ 5
Size
Color: Navy Blue, Size: 3X-Large
love the shirt and they fit well for an overweight man. All the ones I got are consistent in size and you don't see that often.
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Reviewed in the United States on April 21, 2026
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Verified Purchase
JPen
Grantham, US
★★★★★ 5
Excellent style and quality for price
Color: Grey Blue, Size: Medium
Very nice quality and affordable price. Fabric is soft and smooth, very few wrinkles after washing and drying and easy to iron. Seems durable for machine washing and drying. Fits true to size.
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Reviewed in the United States on January 27, 2026

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