Our weld-in 1984-96 C4 Corvette IRS rear suspension kits will allow you to bolt your supplied C4 rear end and use Coil overs to accomidate for your vehicles weight. Each weld-in kit is specifically designed per Make & Model for the easiest installation for the do it yourself builder.
Frames that are 40″ wide or narrower use bracket kits.
Frames over 40″ wide are new rear frame sections, to keep the suspension from binding.
We can custom build for non-stock frames and most vehicles not listed. Inquire for details.
Progressive Automotive takes pride in manufacturing their products at their shop in Baltimore, Ohio, U.S.A. emphasizing their commitment to quality and craftsmanship.
Optional Parts are listed at the bottom of this page
Bracket Kits, Frames that are 40″ wide or narrower at trailing bar mount locations. include:
(4) Rear Cover mounts with hardware
(1) Urethane bushed pinion support with hardware
(2) Trailing bar connectors with hardware
(2) Upper coil-over mounts with hardware
(2) Lower coil-over mounts with hardware
Chevrolet/G.M. Cars & Trucks
1955-57 Chevy car bracket kit LV-CJ $759
1955 (2nd Ser.)-59 Chevy truck bracket kit LV-CTF $759
*Low 1960-62 Chevy C10 truck bracket kit with rear frame rails,boxing/coil-overs, LV-CTG $2,149
*Low 1963-66 Chevy C10 truck bracket kit with rear frame rails,boxing/coil-overs, LV-CTH $2,149
*Low 1967-72 Chevy C10 truck bracket kit with rear frame rails,boxing/coil-overs, LV-CTI $2,149
*Note,These kits include rear frame rails & Ride Tech HQ coil-overs. Required raised bed floor
Ford Trucks
1942-47 Ford truck bracket kit LV-FTE $759
1948-52 Ford truck bracket kit LV-FTF $759
1953-56 Ford truck bracket kit LV-FTG $759
New Frame Sections, Frames over 40″ wide, at trailing bar mount location, include new rear frame sections. include:
(1) Assembled rear frame section
(4) Rear Cover mounts with hardware
(1) Urethane bushed pinion support with hardware
(2) Trailing bar connectors with hardware
(2) Upper coil-over/Shockwave mounts with hardware
(2) Lower coil-over/Shockwave mounts with hardware
(2) Urethane Rear Cover Bushings
(2) Adjustable Steel Camber bars with hardware
(1) *Narrowed Customer supplied rear , unless noted, with, new cover bushings, half shaft u-joints and steel camber bars. *1984-87 Rear end can be narrowed to 58.5″ hub width, *1988-96 Rear end can be narrowed to 59.5″ hub width.
Chevrolet/G.M. Cars & Trucks
1931-32 car/1931-33 truck, New frame section LV-CA $6,750
1933 Master car, New frame section LV-CB $6,750
1934 Master car, New frame section LV-CC $6,750
1934-35 Standard car, new frame section LV-CD $6,750
1935 Master car/ 1936 Standard car, New frame section LV-CE $6,750
1937-39 car, New frame section LV-CG $6,750
1941-48 car, New frame section LV-CI $6,750
1934-36 truck, New frame section LV-CTB $6,750
1937-40 truck, New frame section LV-CTC $6,750
1941-46 truck, New frame section LV-CTD $6,750
1947-53 truck, New frame section for stock width C4 rear LV-CTE $4,805
1947-53 truck, New frame section LV-CTE-N $6,750
1954-55 (1st Ser.) truck, New frame section for stock width C4 rear LV-CTEE $4,805
1954-55 (1st Ser.) truck, New frame section LV-CTEE-N $6,750
Ford Cars & Trucks
1932 car/1932-33 (1st Ser.) truck, New frame section LV-FB $6,750
1933-34 car/1933 (2nd Ser.)-34 truck, New frame section LV-FC $6,750
1935-40 car/1935-41 truck, New frame section LV-FD $6,750
1941-48 car, New frame section LV-FE $6,750
Mopar Cars & Trucks
1933 Plymouth (108” WB) car, New frame section LV–PA-108 $6,750
1933 Plymouth (112” WB) car, New frame section LV–PA-112 $6,750
1933-35 (1st Ser.) Dodge Truck, New frame section LV–PTA-112 $6,750
1934 Plymouth (108” WB) car, New frame section LV–PB-108 $6,750
1934 Plymouth (114” WB) car, New frame section LV–PB-114 $6,750
Willys Cars & Trucks
1937-41 car/1937-41 Truck, New frame section LV-WA $6,750
Optional & Universal Builders Parts
Lower Coil-over mounts only LV-CO-MH $259/pr.
Universal Urethane Bushed Pinion Support Crossmember only LV-PMK $239
Universal Trailing Bar Connectors and Mounting Brackets only LV-TBK $279/pr.
R-Joint trailing bars, one end RH adjustable, set of 2 uppers and 2 lowers LV-TB-RH $499
R-Joint Camber bars with mounting cradle, RH and LH R-joints LV-CB-RH $610
1″ Torsional Rear Sway bar kit PA-RSB-VR1 $739
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
- HQ Coil-overs shown
