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QA1 DS501-12300 HD Pro Rear Weld-In Coilover Kit Single Adj Shock

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#721DS50112300

QA1 DS501-12300 HD Pro Rear Weld-In Coilover Kit Single Adj Shock

QA1's Heavy Duty Pro Rear Systems provide a seamless coilover conversion for vehicles with a 1700-2600 lbs. rear axle weight, including all necessary hardware and bracketry.
The system offers 9” of ride height adjustability with axle-mounted brackets allowing for ¾” increments and fine-tuning via the coilover shocks.

Spring Rate:

300 lb

$823.95

Factory Shipped

$912.81

Save $88.86

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Product Summary

Rear Position, 300 lbs. Spring Rate, Height Adjustable

QA1's Heavy Duty Pro Rear Systems provide a seamless coilover conversion for vehicles with a 1700-2600 lbs. rear axle weight, including all necessary hardware and bracketry.
The system offers 9” of ride height adjustability with axle-mounted brackets allowing for ¾” increments and fine-tuning via the coilover shocks.
Single-adjustable Proma Star shocks deliver adjustable ride quality, letting users easily switch between comfort and performance settings.
The kit is designed for easy weld-in installation, including all essential brackets and hardware for a straightforward process.
300lb/in. Spring for 3.00in. Axle Tube

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Key Specs

Position	Rear
Spring Rate	300 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

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QA1 DS501-12300 Details

Product Overview QA1's Heavy Duty Pro Rear Systems are the perfect solution to add coilovers to your car or truck. Designed for any vehicle with a 1700-2600 lbs. rear axle weight, this kit includes all the necessary hardware and bracketry for a seamless installation. With double shear bracketry and increased spring rates, it ensures the strength and support you need for street and race applications. This simple weld-on kit features axle mount bracketry, upper shock mounts and tubing, and fully adjustable QA1 coilover shocks and springs. Ride Height Adjustability Our axle-mounted brackets offer ¾” increments of adjustment, and the coilover shock allows for fine-tuning. Combined, you will have a total of 9” of ride height adjustability, giving you full control for your desired stance. Single-Adjustable Coil-Overs QA1 single adjustable Proma Star shocks deliver exceptional ride quality and performance. With the simple turn of a dial, you can effortlessly switch between a comfortable cruise and a more aggressive feel, making them ideal for daily driving or twisty backroads. Easy, Weld-In Installation Each kit comes complete with the essential brackets, tabs, and hardware, making it a simple weld-on solution to get the job done efficiently without excess fabrication or trips to the parts store. Best In-Class Lifetime Warranty Register at QA1.net/warranty for lifetime coverage of your QA1 shocks. Made in the USA QA1’s Heavy Duty Pro-Rear Systems is proudly made in Lakeville, Minnesota. Fitment Notes Welding required Designed for 3.00” axle tubes Included tubular upper shock mount dimensions are 1-5/8” diameter x .095 wall, 40” long Requires use of QA1 spanner wrench T114W or T115W

Guides & Documents

Coilovers Installation Instructions (721DS50112300)

Warranty (QA1)

Technical Information (QA1)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

QA1 DS501-12300 Specifications

KEY SPECS
MFG. Part #	DS501-12300
Brand	QA1
Position	Rear
Spring Rate	300 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Upper Shock Mount	Eyelet
Lower Shock Mount	Eyelet
Height Adjustable	Yes
Finish	Polished

GENERAL
Compressed Length	11.63"
Extended Length	16.88"
Number of Valving Selections	18
Coilover Springs Included	Yes
Sold in Quantity	Kit
Hardware Included	Yes
Crossmember Included	No
Welding Required	Yes
Gas Charged	No
Spring Finish	Powder Coated
Notes	Designed for 3.00 axle tubes. Included tubular upper shock mount dimensions are 1-5/8 diameter x .095 wall, 40 long. Requires use of QA1 spanner wrench T114W or T115W.
GTIN Code	806990169990
Adjustable Valving	Yes
Adjustable Mounting Bracket Included	Yes
Lower Mount	Bearing
Upper Mount	Bearing
Shocks Included	Yes

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