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Rough Country Part # 12530

Rough Country - 6 Inch Lift Kit - Rear Blocks - Chevy/GMC C10/K10 Truck & SUV/K5 Blazer (73-76) - 12530

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Before you order

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Canadian since 2005 Questions? Email sales@raptorracing.com

Transform your truck's stance and capability

Upgrade your GM truck from front to back with Rough Country's 6 in Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation.

Engineered for superior ride quality

This kit includes application-specific front lifted leaf springs, delivering increased ground clearance without sacrificing ride comfort or control. Rear lift blocks, add-a-leaf springs, and brake line brackets maintain proper geometry, ensuring a smooth, factory-like ride after installation.

Enhanced performance with N3 Series shocks

Rough Country's N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity.

Room for bigger tires

Make room for aggressive wheel and tire combos. This 6 in lift offers enough clearance to run up to a 37 in tall tire with proper backspacing, giving your truck the rugged stance it deserves.

Improved steering and handling

To maintain proper drivability, a raised steering arm is included correcting steering geometry for tight, responsive handling after the lift.

Limited lifetime warranty

Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.

  • Boosted ground clearance. Gain the extra height needed for better off-road capability and obstacle clearance.

  • Application-specific front leaf springs. Engineered for a perfect fit and optimal ride quality.

  • Rear add-a-leaf springs. Enhance load support and rear suspension height without compromising ride quality.

  • Clears 37-inch tires. Provides ample room to run up to a 37 in tall tire with no rubbing.

  • Raised steering arm included. Corrects steering geometry for precise handling and improved alignment.

  • Premium N3 Series shocks. Includes application-valved N3 shock absorbers for balanced on-road comfort and off-road control.

Lift height 6 in
Location Rear
Warranty Limited lifetime
Country of origin China
Mount style Bolt On
Part number 12530

  • 1975-1976 Chevrolet K10
  • 1975-1976 Chevrolet K10 Suburban
  • 1975-1976 Chevrolet K5 Blazer
  • 1975-1976 GMC Jimmy
  • 1975-1976 GMC K15
  • 1975-1976 GMC K15 Suburban

If vehicle is equipped with a front sway-bar, drop brackets are recommended SKU: 1019. Vehicles with factory quad shocks (2 front shocks per side) will simply use a single aftermarket shock.

Installation instructions (PDF)

Install time: 6-8 hours

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.

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