1988-1998 GMC C1500 2WD 5"/7" Spindle + Coil Lowering Kit
For builders targeting a purposeful lowered OBS C1500 stance, this kit combines the listed front drop hardware with a matched rear lowering solution.
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
- 1-2 inch adjustable rear drop shackles
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: 7-8 inches (adjustable shackle position)
Placement: Front & Rear
Brand: Trekline Motorsports
Trekline SKU: 1300DR040
