SKU: 66489217209

QA1 Pro Rear Weld-In Coil-Over System - Double Adj. - 12in x 150lbs/in - 3in Tube - Aluminum

Sale price$459.88 Regular price$510.98
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

QA1 Pro Rear Weld-In Coil-Over System - Double Adj. - 12in x 150lbs/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: 66489217209

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4.9 ★★★★★
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Blaine
Belleville, US
★★★★★ 5
The best quality
Love Eufy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
E
Verified Purchase
Emanuel
Chelsea, US
★★★★★ 1
Not good, poor quality from Eufy products
I bought this as a last try to fix my unit. I wanted to share my experience with the Eufy S1 Pro after owning two units. Unfortunately, both units had serious issues. The first one developed multiple problems within less than a year: Dirty water tank issues Mop roller lifting motor malfunction Loud and abnormal noise during dust collection Eventually stopped working completely Despite that, I decided to give it another try and purchased a second unit, planning to reuse parts from the first one if needed. However, the second unit failed even faster. After around 2 months, it stopped performing dust suction from the robot to the base station. At this point, I cannot recommend this product. The reliability has been very poor in my experience, especially considering the price. On a positive note, customer support has been responsive and helpful, but unfortunately, the product quality itself did not meet expectations.
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Reviewed in the United States on March 29, 2026
C
Verified Purchase
Captain Insano
New York, US
★★★★★ 5
Works just as expected
It fits and is the oem part.
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Reviewed in the United States on April 3, 2025
A
Ashkan R.
Fort Morgan, US
★★★★★ 1
Bad quality
It goes bad after 1 month
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Reviewed in the United States on February 23, 2025
J
Verified Purchase
Jim
Louisville, US
★★★★★ 5
Cleaning
Style: L50 SES
Great product
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Reviewed in the United States on April 8, 2026

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