QA1 52851 Big Wheel Rear Sway Bar Kit 1-1/4 in 4130 Chromoly for 71-96 GM B-Body

Vehicle Fitment

• 1971-1990 Chevrolet Caprice (B-Body, All Trims -- Big Wheel)
• 1991-1996 Chevrolet Caprice (B-Body, All Trims -- Big Wheel)
• 1971-1985 Chevrolet Impala (B-Body, All Trims -- Big Wheel)
• 1994-1996 Chevrolet Impala SS (B-Body -- Big Wheel)
• 1971-1976 Chevrolet Bel Air (B-Body -- Big Wheel)
• 1971-1990 Buick LeSabre (B-Body -- Big Wheel)
• 1971-1990 Buick Electra (B-Body -- Big Wheel)
• 1971-1996 Oldsmobile Delta 88 (B-Body -- Big Wheel)
• 1971-1990 Oldsmobile 98 (B-Body -- Big Wheel)
• 1971-1990 Pontiac Bonneville (B-Body -- Big Wheel)
• 1971-1981 Pontiac Catalina (B-Body -- Big Wheel)
• B-Body wagon models -- frame mount design recommended over standard rear bar

Fitment Notes

• Big wheel/tire applications only -- bar tuned for large wheel fitment
• Works with QA1 or OEM rear trailing arms
• Recommended for B-Body wagon models -- standard rear bars do not fit wagons
• For front + rear big wheel kit see QA1 52852
• Professional installation recommended -- some applications may require welding

Features

• 1-1/4" hollow 4130 chromoly -- maximum stiffness, minimum weight
• Performance-tuned diameter and wall thickness for B-Body application
• CNC-bent tubing with machined and welded bar ends
• Greaseable graphite polyurethane bushings
• Gloss black powder-coat finish
• Reduces body roll -- improved cornering grip and stability
• Made in USA (Lakeville, MN)
• 1-year warranty

Specifications

• Part Number: 52851
• Position: Rear
• Bar Diameter: 1-1/4 inches
• Construction: Hollow 4130 chromoly steel
• Finish: Gloss black powder-coat
• Bushing Material: Graphite polyurethane (greaseable)
• Application: 1971-1996 GM B-Body, Big Wheel
• Origin: Made in USA
• Warranty: 1-year

Included Components

• 1x Rear sway bar (4130 chromoly)
• Greaseable graphite polyurethane bushings
• U-bolts and high-quality plated mounting hardware

Product Description

The QA1 52851 is a rear sway bar kit purpose-built for big wheel and tire applications on 1971-1996 GM B-Body vehicles including the Caprice, Impala, Bel Air, LeSabre, Delta 88, and Bonneville. Unlike standard rear sway bars, the 52851 is specifically tuned in diameter and wall thickness for the geometry and weight bias of large wheel fitments -- delivering improved cornering grip and body roll control without harshness. The 1-1/4" hollow 4130 chromoly bar provides the stiffness of a larger solid bar at a fraction of the weight.

CNC-bent tubing, machined and welded bar ends, and a gloss black powder-coat finish deliver both precision fitment and lasting durability. Greaseable graphite polyurethane bushings and plated hardware are included. Compatible with QA1 or OEM rear trailing arms. The frame-mount design makes this bar the recommended choice for B-Body wagon models, where standard axle-mount bars do not fit. For a complete front and rear big wheel kit, see QA1 52852. Made in Lakeville, MN and backed by a 1-year warranty.