1973-1987 GMC C15 2WD 3"/6" Coil Spring Lowering Kit + Shocks + C-Notch
GMC-specific listing: This version is cataloged specifically for 1973-1987 GMC C15 2WD squarebody trucks, with GMC-focused fitment, search terms and product navigation for the squarebody C15 platform.
This coil-based 3/6 setup gives the GMC C15 a deeper rear stance while using purpose-built three-inch front springs instead of modified factory coils.
The front ride-height change comes from purpose-built lowering coils, giving the truck a predictable spring package without cutting the factory coils. This version includes matched drop shocks for both ends, reducing the number of separate suspension pieces needed to finish the lowering package. The included bolt-on C-notch makes this the more complete deep-drop version of the same basic suspension combination.
Kit Contents:
- 3-inch front lowering coils (pair)
- 6-inch rear axle flip kit
- front drop shocks (pair)
- rear drop shocks (pair)
- bolt-on rear C-notch kit
Vehicle Fitment:
- 1973-1987 GMC C15 2WD
Important Fitment & Installation Notes:
- Front and rear drop shocks are included, matching shock travel to the lowered suspension combination supplied in this kit.
- A bolt-on rear C-notch is included with this SKU to provide the axle-to-frame clearance required by this drop.
- Perform a professional alignment after installation and verify steering clearance, brake-hose routing, bump-stop clearance, shock travel and fastener torque before regular road use.
- Lowering amounts are referenced from stock OEM ride height; worn springs, prior suspension modifications or existing sag can change the measured result.
Front Drop: 3 inches
Rear Drop: 6 inches
Placement: Front & Rear
Brand: Trekline Motorsports
Trekline SKU: 1250DR063
