Overview
The California Super Trucks CSS-C5-7 is a dual front shock bracket kit from the CST Performance Suspension Dirt Series. It is designed for the 2011-2015 Chevrolet Silverado 2500HD and 3500 and GMC Sierra 2500HD and 3500 trucks, and it fits both 2WD and 4×4 models.
The kit is built for trucks with gas engines and the 6.6L Duramax. It is sold with black anodized reservoir shock clamps sized for a 2.0 shock or reservoir body.
Key features
- Dual front shock upper and lower mounting brackets, sold as a pair
- Black anodized reservoir shock clamps for 2.0 shock or reservoir bodies
- Covers 2WD and 4×4 models
- Fits gas and 6.6L Duramax engine trucks
- All necessary installation hardware included
Dual shock setup on heavy-duty trucks
Heavy-duty trucks put higher loads on front shocks, especially when towing or running with a loaded bed. A dual shock setup spreads that load across two mounting points, which helps keep the upper and lower brackets from flexing under repeated impacts. Before assembly, confirm that both shocks clear the steering components and the frame at full lock and full droop.
Reservoir shocks add a separate body that must be aligned with the clamp so the hose and fittings do not rub. After installation, check for fluid leaks around the reservoir, look for wear on the clamp bolts and confirm the hose has room to move through the full travel range.
- Confirm clearance at full steering lock
- Check clamp bolts after the first few drives
- Inspect reservoir hoses for rub points
Specifications
| Brand | California Super Trucks (CST Performance Suspension Dirt Series) |
|---|---|
| Part number | CSS-C5-7 |
| UPC | 700007171191 |
| Kit type | Dual front shock bracket kit |
| Model years | 2011-2015 |
| Models | Chevrolet Silverado 2500HD and 3500; GMC Sierra 2500HD and 3500 |
| Drivetrain | 2WD and 4×4 |
| Engines | Gas and 6.6L Duramax |
| Reservoir clamps | Black anodized, designed for a 2.0 shock or reservoir body |
Vehicle fitment
The kit fits 2011-2015 Chevrolet Silverado 2500HD and 3500 and GMC Sierra 2500HD and 3500 trucks in 2WD and 4×4 with gas and 6.6L Duramax engines.
Trucks outside the 2500HD and 3500 series and model years outside 2011-2015 are not part of this fit. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
All needed installation hardware comes in the kit, so no separate hardware purchase is required. Check that your shock or reservoir body matches the 2.0 size the clamps are designed for before assembly.
What’s included
A pair of dual front shock upper and lower mounting brackets, black anodized reservoir shock clamps designed for a 2.0 shock or reservoir body, and all necessary installation hardware.
Not included: Shocks and reservoirs are not part of the kit.






