K5 Blazer on a Frame-Werx chassis, side profile in the studio
Chevy K5 Blazer · GMC Jimmy · 1969–1991
A brand-new K5 Blazer frame, built to drive like a modern truck.

If your K5 Blazer’s frame is rusted through, cracked or drilled full of holes, you can spend weeks repairing it and still end up with leaf springs and a solid front axle. Or you can start over with a brand-new frame.

A Frame-Werx frame is built new for the K5 Blazer and GMC Jimmy and set up for independent front suspension, sway bars front and rear and a multi-link rear. It bolts to the factory body mounts, so the body goes back on exactly as it came off, and the truck finally rides and handles the way a modern truck does.

Fits

  • 1969–1972 Chevrolet K5 Blazer
  • 1970–1972 GMC Jimmy
  • 1973–1991 Chevrolet K5 Blazer
  • 1973–1991 GMC Jimmy

See it in the shop

A walkaround of a Frame-Werx chassis on our shop floor.

What it does for a K5 Blazer

Ride quality

Independent front suspension soaks up broken pavement and expansion joints instead of sending them into the cab.

Handling

Sway bars front and rear keep the truck flat and composed through corners, lane changes and freeway ramps.

Multi-link rear

Locates the rear axle precisely for a settled ride, with the strength to tow.

Rated to 800 horsepower

Engineered to carry modern GM Performance engine and transmission packages.

Two-wheel, four-wheel or all-wheel drive

Build it as two-wheel drive, electronic-shift four-wheel drive or full-time all-wheel drive.

Bolts to the factory body

Built to the original body mounting points. No cutting, no drilling.

Full-length Frame-Werx chassis during assemblyCast-iron upper control arm on a Frame-Werx independent front suspensionFrame-Werx rolling chassis, full side view on whiteBlue K5 Blazer on a Frame-Werx chassis in the showroom

Bare frame or rolling chassis

You can buy a Frame-Werx K5 Blazer frame three ways: the bare frame, the frame with its parts shipped loose for you to assemble, or a complete rolling chassis assembled in our shop and ready for your body and engine. The chassis builder prices each one as you go.

Replace it, don’t repair it

A factory Blazer frame that has spent fifty years on salted roads is rarely worth saving. Repairing it means blasting, welding and boxing, and the truck still drives like it did in the 1970s. A new Frame-Werx frame retires the old one altogether and gives the Blazer modern ride quality and handling at the same time.

Spec it your way

Choose shocks from a factory-style setup through Fox, King and Rough Country Vertex reservoir coilovers up front; brakes from a standard aftermarket package to Frame-Werx calipers and Wilwood big-brake kits; a 3.42, 3.73 or 4.10 rear gear; and a GM Performance engine and transmission package. Finish it hot-dip galvanized, or in epoxy primer and black. Buy the bare frame, the frame with parts shipped loose, or a complete rolling chassis assembled in our shop.

Common questions

Is this a full replacement frame or a repair section?

A complete new frame. Your original frame is retired altogether and the body moves over to the Frame-Werx frame on the factory mounting points.

Which K5 Blazers does it fit?

Every K5 Blazer from 1969 through 1991, and every full-size GMC Jimmy from 1970 through 1991.

Can I buy just the frame?

Yes. It is available as a bare frame, as a frame with parts shipped loose, or as a complete rolling chassis assembled in our shop.

How is the frame finished?

Hot-dip galvanized, or epoxy primed and painted black.

What does it cost?

A bare hot-dip galvanized frame starts at $17,900. Everything beyond that depends on the parts you choose, and the chassis builder keeps a running total as you go.

How do I order?

Spec your chassis in the builder and review the estimate. Frame-Werx chassis are sold exclusively through K5 Squared, and a deposit reserves your place in the build queue.

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