QA1 Pro Coil Rear Shock System Chevelle/El Camino 64-72 Double-Adjustable with 12” 170-Lb Springs
Highlights
- 100% Dyno Tested
- Springs with 130 lb/in Rate
- 18 Positions of Adjustment
- Bolt-in Design
QA1 Pro Coil Double-Adjustable Rear Shock System with 12” 170-Pound Springs for 1964-1972 Chevy Chevelles and El Caminos.
With 324 valving combos to choose from, you’re bound to find your perfect match in this QA1 rear shock system! The Pro Coil system is great for 1964-1972 Chevy Chevelles and El Caminos. Billet aluminum coilovers are paired with 12” springs that have a 170 lb/in spring rate. Each is 100% dyno tested, ensuring peak performance right out the gate. Plus, you’ll be able to lower your ride up to 2.25” lower than stock.
Features and Benefits:
- Ideal for street rod, drag racing, & autocross applications
- 100% dyno tested by QA1
- Coilovers are made of lightweight, billet aluminum
- 12” springs operate at 170 lb/in spring rate
- Max lift height: 0.5” higher than stock
- Max lowering height: 2.25” lower than stock
- 18 positions of compression & rebound adjustment
- 324 possible valving combinations
- Fully threaded body for use of aftermarket springs
- Straightforward, bolt-in installation
Additional Notes:
- The lower shock mount bracket may not work with aftermarket rear end housings.
- Requires a spanner wrench for installation, sold separately. See QA1 part numbers T114W and T115W.
California Residents: Proposition 65 Warning
Related Categories: Restomod, Suspension

Installation Difficulty

Intermediate skill is required for this installation.
Installation Instructions
Vehicle Fitment
This product will fit the following Chevelle years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
This product will fit the following El Camino years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,