1988-1991 GMC C1500 2WD Standard Cab 4"/7" Spindle + Coil Lowering Kit + Shocks, C-Notch
Build a clean OBS stance with a complete Trekline package matched to the GMC C1500 chassis and the listed front/rear drop combination.
This is the dedicated 1988-1991 Standard Cab version. Trekline separates these trucks from its broader 1988-1998 C1500 kits, so this SKU should not be substituted with a 1300-series kit.
Kit Contents:
- 2-inch front drop spindles (pair)
- 2-inch front lowering coils (pair)
- 6-inch rear axle flip kit
- 1-2 inch adjustable rear drop shackles
- front drop shocks (pair)
- rear drop shocks (pair)
- bolt-on rear C-notch kit with mounting hardware
Vehicle Fitment:
- 1988-1991 GMC C1500 2WD Standard Cab only
Important Fitment & Installation Notes:
- Cab fitment: 1988-1991 GMC C1500 2WD Standard Cab only. Do not use on Extended Cab trucks or 1992+ models.
- Brake rotor check: the Standard Cab spindle application is associated with the 1.00-inch front rotor setup. Measure rotor thickness and verify the complete brake/spindle configuration before ordering.
- Front and rear drop shocks are included so shock travel is matched more closely to the supplied lowering combination.
- A bolt-on rear C-notch is included to provide additional axle-to-frame clearance at the listed rear drop.
- Inspect driveshaft operating angle after lowering. Trucks with a 2-piece driveshaft may need carrier-bearing geometry correction depending on the final setup.
- Measure the truck before ordering. Lowering amounts are referenced from stock OEM ride height, so worn springs or previous suspension changes can affect the measured result.
- Perform a professional alignment after installation and verify wheel/tire clearance, brake-hose routing, bump-stop clearance, shock travel and fastener torque before regular road use.
Front Drop: 4 inches
Rear Drop: 7-8 inches (adjustable shackle position)
Placement: Front & Rear
Brand: Trekline Motorsports
Trekline SKU: 1350DR032
