1988-1998 GMC C1500 2WD 5"/6" Spindle + Coil Lowering Kit
This Trekline package is configured around the GMC C1500 suspension so the front lowering method, rear drop hardware and supporting components work as one setup.
Trekline separates 1988-1991 Standard Cab trucks into a dedicated 1350-series application. This 1300-series listing is for the broader C1500 application and must not be used on a 1988-1991 Standard Cab.
Kit Contents:
- 2-inch front drop spindles (pair)
- 3-inch front lowering coils (pair)
- 6-inch rear axle flip kit
Vehicle Fitment:
- 1988-1998 GMC C1500 2WD
Important Fitment & Installation Notes:
- Cab fitment: does not fit 1988-1991 Standard Cab models; use the dedicated 1350-series Standard Cab listing for those trucks.
- Drop shocks are not included. Select shocks with travel appropriate for the final lowered ride height; deeper rear drops generally require shorter shocks.
- A C-notch is not included with this SKU. Verify axle-to-frame clearance at full compression; a notch may be required or strongly recommended depending on final ride height and use.
- 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: 5 inches
Rear Drop: 6 inches
Placement: Front & Rear
Brand: Trekline Motorsports
Trekline SKU: 1300DR035
