QA1 R231 250 QA1 Rear Suspension Conversion Systems Summit Racing QA1 Suspension Subframe 5283 QA1 Suspension Upgrades Shop by Product Category QA1 Suspension Upgrades Shop by Product Category QA1 Suspension Kit R258 170*QA1 Suspension Kit R258 170 eBay QA1 Suspension Kit R258 170*QA1 Suspension Kit R258 170 eBay. QA1 Adjustable Rear Frame Supports are engineered to improve handling, traction and all around suspension performance by eliminating unwanted chassis flex and reinforcing the upper and lower trailing arm mounts. Made from 1'' diameter cold rolled steel tubing, they feature zinc plated adjustable threaded sleeves for adjusting the preload in the rear trailing arm mount after installation. Designed to clear stock and aftermarket mufflers and includes all of the necessary hardware for an easy installation. Improve handling Eliminate unawanted chassis flex All installation hardware included Made in the USA Attributes: Brand Name: QA1 GTIN: 00806990064721 Grade Type: Performance Manufacturer Part Number: 5283 UPC: 806990064721 Extended Information: Country of Origin: US Emissions : Announced Packing Information: Quantity of Each: 1 Package UOM: EA Dimension: 16 x 5 x 3. 25 inches Weight: 6. 45 POUNDS PDF: