Ridetech Rear Dual-Rate Coil Springs, 2 Inch Drop, for 1978-1988 GM G-Body
The Ridetech Rear Dual-Rate Coil Springs, MPN 11324799, are a rear lowering coil spring pair for a 1978-1988 GM G-body, including the Monte Carlo, SS, Malibu, Regal, Grand National, 442, Hurst/Olds, LeMans, Grand Prix, Cutlass, El Camino, and T-Type. The springs use a dual-rate design with a 150 lb/in initial rate and a 250 lb/in secondary rate, delivering a 2 inch drop.
Key Features
- Rear dual-rate lowering coil spring pair, 2 inch drop
- 150 lb/in initial rate, 250 lb/in secondary rate
- Direct fit for the rear coil spring pockets
- Part number 11324799
- Ships as spring pair 11324799, ready for the rear axle only
Fitment
| Vehicle Application | Position |
|---|---|
| 1978-1988 GM G-body (Monte Carlo/SS, Malibu, Regal, Grand National, 442, Hurst/Olds, LeMans, Grand Prix, Cutlass, El Camino, T-Type) | Rear |
Specifications
| Detail | Value |
|---|---|
| MPN | 11324799 |
| Retailer SKU | RID11324799 |
| Drop | 2 in |
| Initial Rate | 150 lb/in |
| Secondary Rate | 250 lb/in |
What’s Included
- 2 dual-rate rear coil springs
About Ridetech
Ridetech engineers air suspension, coilovers, and chassis components in the USA and tests every system on real vehicles. Spring pair 11324799 is part of Ridetech’s GM G-body suspension lineup.
Related Parts
- Ridetech Steering Linkage Kit for 1978-1988 G-Body
- Ridetech Inner Tie Rod End for 1978-1988 G-Body
FAQ
What does dual-rate mean for these springs?
The spring starts at a 150 lb/in initial rate for a comfortable ride, then progresses to a 250 lb/in secondary rate under load for better control.
How much does this kit lower the rear?
This spring pair provides a 2 inch drop at the rear.
Does this kit include shocks?
No. This kit includes the rear coil springs only. Shocks are sold separately.
Does this fit a Grand National?
Yes. This spring pair fits all 1978-1988 GM G-body models, including the Buick Grand National.
Will this affect my rear sway bar fitment?
No. This spring pair does not change rear sway bar mounting points.
Does this fit an El Camino?
Yes. The 1978-1988 El Camino shares the GM G-body platform covered by this kit.
Are these direct-fit springs?
Yes. The springs are a direct fit for the factory rear coil spring pockets.
Is a different drop height available?
Check the Ridetech GM G-body rear coil spring lineup for additional drop height options.
Installation Instructions
- Raise the rear of the vehicle and support the frame on jack stands
- Support the rear axle, then remove the wheels
- Disconnect the shocks and lower the axle to relieve spring tension
- Remove the factory rear coil springs
- Install the new dual-rate coil springs in the factory spring pockets
- Reconnect the shocks and torque all fasteners to the manufacturer’s specification
- Lower the vehicle and verify ride height and clearance before driving
California Proposition 65 Warning
WARNING: This product can expose you to chemicals including those known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.








