{"product_id":"qa1-r123-130-coilover-4-link","title":"QA1 R123-130 - 64-66 Ford Mustang Rear Suspension Conversion System - Single Adj. 130lb\/in","description":"\u003cp\u003eQA1 R123-130 - 64-66 Ford Mustang Rear Suspension Conversion System - Single Adj. 130lb\/in\u003c\/p\u003e\u003cp\u003eQA1 R123-130 Four Link Kit  Single Adjustable\u003c\/p\u003e\u003cp\u003e1964-1966 Ford Mustang\u003c\/p\u003e\u003cp\u003eTransform the way your early Mustang handles with QA1’s rear four-link kit. Designed for 1964–1966 Mustangs, this single adjustable four-link replaces the factory leaf springs with a modern suspension system that delivers improved traction, adjustability, and ride quality. Whether you’re building a street machine or a track-capable restomod, QA1’s four-link gives you the control and confidence you need. MODERN HANDLING FOR YOUR CLASSIC MUSTANG Factory leaf springs were never designed for today’s performance expectations. QA1’s four-link suspension eliminates axle wrap, controls wheel hop, and keeps the tires planted under hard acceleration and cornering. The 18-click, single adjustable shocks allow you to fine-tune ride quality and handling, giving your Mustang a balance of comfort and performance. RIDE HEIGHT \u0026amp; ADJUSTABILITY This kit offers a ride height adjustment range from the stock ride height to 3” lower than factory. That means you can dial in the perfect stance for your build, whether you’re looking for a lowered, aggressive look or stock-like ride height with modern performance benefits. WELD-IN INSTALLATION For maximum strength and durability, this kit requires welding during installation. QA1 engineered the brackets to be self-fixturing, making the process as straightforward as possible. Once installed, the system integrates seamlessly into your Mustang chassis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 1964–1966 Ford Mustangs\u003c\/li\u003e\n\u003cli\u003eSingle adjustable shocks for fine-tuning ride and handling\u003c\/li\u003e\n\u003cli\u003eEliminates axle wrap and wheel hop\u003c\/li\u003e\n\u003cli\u003eProvides predictable traction and stability\u003c\/li\u003e\n\u003cli\u003eRide height adjustability: 3” of adjustment\u003c\/li\u003e\n\u003cli\u003eWorks with factory axle housings or QA1 9” housings\u003c\/li\u003e\n\u003cli\u003eSelf-fixturing weld-in brackets for easier installation\u003c\/li\u003e\n\u003cli\u003ePolyurethane bushings reduce noise while maintaining strength\u003c\/li\u003e\n\u003cli\u003ePowder-coated components for durability\u003c\/li\u003e\n\u003cli\u003eComplete kit includes shocks, brackets, hardware, and links\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Spring Relaxed Length\u003c\/strong\u003e: \u003cspan\u003e12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAir Adjustable\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Spring Compressed Length\u003c\/strong\u003e: \u003cspan\u003e8\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Spring Insulator(s) Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eStrut Mount Insulator(s) Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: \u003cspan\u003eQA1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGrade Type\u003c\/strong\u003e: \u003cspan\u003ePerformance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: \u003cspan\u003eR123-130\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSuspension Type\u003c\/strong\u003e: \u003cspan\u003eSpring\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: \u003cspan\u003e806990234612\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBushing Color\u003c\/strong\u003e: \u003cspan\u003eBlack\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBushing Material\u003c\/strong\u003e: \u003cspan\u003ePolyurethane\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Spring Color\u003c\/strong\u003e: \u003cspan\u003eSilver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCoil Spring Material\u003c\/strong\u003e: \u003cspan\u003eChrome Silicon Alloy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eRear Shocks Relaxed Length\u003c\/strong\u003e: \u003cspan\u003e16.38\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eRear Shocks Compressed Length\u003c\/strong\u003e: \u003cspan\u003e11.13\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"QA1","offers":[{"title":"Default Title","offer_id":50788329586966,"sku":"BJGM-R123-130","price":2383.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_drhartnrtjrtj_copy_normalized.jpg?v=1776506295","url":"https:\/\/www.cspracing.com\/products\/qa1-r123-130-coilover-4-link","provider":"Complete Street Performance","version":"1.0","type":"link"}