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Nitro Shock Performance for Long Wheelbase GM Three-Quarter Ton Trucks
The 56 inch rear leaf spring found on certain 1969 to 1972 GM three-quarter ton trucks requires a suspension system built around that exact length. The Skyjacker SKYC260AKSD-N system delivers a 6 inch lift using new front leaf springs and U-bolt kits paired with Nitro shocks for confident, controlled damping. The SKYC260AKSD-N corrects pinion angle and preserves steering geometry at the taller ride height, giving these longer wheelbase trucks the clearance needed for bigger tires. Every SKYC260AKSD-N kit ships with the hardware required for a complete front and rear installation.
Key Features
- Delivers a 6 inch lift for 1969-1972 GM three-quarter ton trucks with 56 inch rear springs
- Paired with Nitro shocks for controlled damping performance
- Includes front leaf springs matched to the SKYC260AKSD-N application
- Front and rear U-bolt kits sized to factory axle tubes
- Front spring bushing kit included for complete installation
- Backed by Skyjacker's limited lifetime warranty
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 1969-1972 | Chevrolet | K20 |
| 1969-1972 | GMC | K25/K2500 |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | C260AKSD-N |
| Brand | Skyjacker |
| Lift Height | 6 inch front, 5.5 inch rear |
| Shock Type | Nitro |
| UPC | Not Published |
What's Included
- Front leaf springs
- Front and rear U-bolt kits
- Front spring bushing kit
- Nitro shocks
About Skyjacker
Skyjacker has engineered suspension lift systems in Louisiana since 1970. The SKYC260AKSD-N carries forward that engineering discipline into a purpose built kit for the 56 inch rear spring platform.
Related Parts
- Skyjacker 6 inch system with 56 inch rear spring, Black MAX shocks (SKYC260AKSD-B)
FAQ
What is the SKYC260AKSD-N?The SKYC260AKSD-N is a Skyjacker 6 inch suspension lift system for 1969-1972 GM three-quarter ton trucks equipped with 56 inch rear leaf springs. It includes front leaf springs, U-bolt kits, and Nitro shocks.
How is the SKYC260AKSD-N different from the SKYC260AKSD-B?The SKYC260AKSD-N is equipped with Nitro shocks, while the SKYC260AKSD-B uses Black MAX shocks; both share the same 56 inch rear spring fitment.
Does the SKYC260AKSD-N fit trucks with the standard rear spring?No, the SKYC260AKSD-N is designed specifically for trucks equipped with the 56 inch rear leaf spring.
Will the SKYC260AKSD-N require cutting the frame?No, the SKYC260AKSD-N is designed as a bolt-on suspension system.
Is an alignment needed after installing the SKYC260AKSD-N?Yes, a professional alignment is recommended after installing the SKYC260AKSD-N.
What warranty applies to the SKYC260AKSD-N?The SKYC260AKSD-N is backed by Skyjacker's limited lifetime warranty against manufacturing defects.
Does the SKYC260AKSD-N include rear shocks?Yes, the SKYC260AKSD-N includes Nitro shocks for both front and rear positions.
What tire size does the SKYC260AKSD-N support?The SKYC260AKSD-N provides substantial clearance for larger off-road tires on classic GM three-quarter ton trucks.
Install Instructions
- Park on level ground, set the parking brake, and block the wheels.
- Raise the front of the vehicle and support with jack stands.
- Remove the front tires, shocks, and OEM leaf springs.
- Install the new Skyjacker front leaf springs and bushing kit.
- Raise the rear of the vehicle and support with jack stands.
- Remove the rear U-bolts and install the new Skyjacker U-bolts.
- Install the Nitro shocks front and rear.
- Lower the vehicle, torque all hardware, and schedule a professional alignment.
Prop 65 Warning
This product can expose you to chemicals which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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