1973-1987 GMC C15 2WD 3"/5" Coil Spring Lowering Kit + Shocks
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.
For builders who prefer a spring-based front drop, this 3/5 C15 package uses dedicated lowering coils up front and a five-inch axle flip at the rear for a traditional squarebody rake.
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.
Kit Contents:
- 3-inch front lowering coils (pair)
- 5-inch rear axle flip kit
- front drop shocks (pair)
- rear drop shocks (pair)
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.
- Trekline identifies this 3/5 combination as not requiring a C-notch under normal installation conditions; still verify axle-to-frame clearance on the finished truck.
- 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: 5 inches
Placement: Front & Rear
Brand: Trekline Motorsports
Trekline SKU: 1250DR042
