Progressive Automotive’s Parallel 4 bar rear suspensions bars are made from heavy wall, seamless tubing, ensuring strength and durability. The bars are TIG welded for both structural integrity and a visually appealing appearance. All bars feature an adjustable end, allowing for easy adjustment. This feature enables you to fine-tune the suspension for alignment and pinion angle. Ride heights can be custom tailored to you taste during your installation. Frame rails must be boxed for bracket attachment points.
Specify either urethane bushings or Ride Tech R-Joints.
-Urethane Bushings Facts: Urethane bushings provide controlled movement, vibration isolation, and durability. Articulation is limited.
-R-joints: R-Joints offers low friction movement, allowing for smooth and effortless articulation and durability. This feature enhances the overall ride, performance and handling of the suspension system.
Progressive Automotive takes pride in manufacturing their products at their shop in Baltimore, Ohio, U.S.A. emphasizing their commitment to quality and craftsmanship.
Upper mounting crossmembers, Sway Bars, Coil-overs, and Air Ride parts are listed at the bottom of this page
Parallel 4-bar Rear Suspension Kit
Parallel 4-bar kits include:
(4) Bars with ends
(2) Frame mounts with hardware
(2) Rear axle mounts with hardware
(4) Lower bar frame mounts with hardware
(2) Lower coil-over/ShockWave mounts with hardware.
with Urethane bushings PA-P4B $579
with R-Joints PA-P4B-R $779
*Recommended (10) 7″ Top Hat Frame re-enforcement plates can be found here
Panhard Bar Kit for All Steel Housings (8″ Ford, 9″ Ford, 8 3/4″ Chrysler, etc.)
Universal Panhard bar kits include:
(1) Panhard Bar with rod ends, 27 1/2″ eye centers,
(2) Frame mounts
(1) Rear axle mounts with (2) longer studs
Panhard bar may requires shortening and re-tapping.
PA-PHB $179
*Recommended (1) 7″ Top Hat Frame re-enforcement plate can be found here
Panhard Bar Kit for Dana Style Cast Housings (8.8 Ford, 10-bolt GM, 12-bolt G.M, etc.)
Universal DANA Panhard bar kits include:
(1) Panhard Bar with rod ends, 47 1/2″ eye centers
(1) Multi-hole frame mount
(1) Rear axle tube mount
Panhard bar typically requires shortening and re-tapping. Mount 7″ behind axle tube
PA-PHB-DANA $269
*Recommended (1) 7″ Top Hat Frame re-enforcement plates can be found here
Additional Parts & Options
Boxing Plates for C-channel style frame rails can be found here:
.75″ Torsional Rear Sway bar kit with weld-on crossmember brackets, Specify Bar length PA-RSB-P4B $629
1″ Torsional Rear Sway bar kit, thru frame style, Specify Bar length and straight or 30 degree kicked arms PA-RSB-PRO $739
Rear Coil-over/Shockwave Upper crossmember, when suspension mounts on the inside of the frame PA-RCC $119
*Recommended (2) 7″ Top Hat Frame re-enforcement plates can be found here
Upper Coil-over/Shockwave mounts, when suspension mounts on the outside of the frame TRB-CO-CJCV $59
Ride Tech Coil-Overs
*More information on these can be found on our Ride Tech Coil-over & Shockwave page
HQ coil-overs, rebound adjustable TRB-CO-HQ $860
Ride Tech Shockwaves for Air suspension
*More information on these can be found on our Ride Tech Coil-over & Shockwave page
HQ ShockWaves, rebound adjustable TRB-SKW-HQ $945
