1978-1987 Chevy C10 Rear Shock Extenders

1978–1987 Chevy C10 Rear Shock Extenders – Improve Shock Travel and Ride Quality After a 5″+ Drop
Designed Specifically for Classic Squarebody Trucks Running Flip Kits or Rear Drop Setups

Lowering your 1978-1987 Chevy C10 is one of the best ways to drastically improve its stance, handling, and overall show-ready appearance—but if you’ve already installed a rear flip kit or performed a 5-inch or greater drop, there’s a critical part of the suspension that far too many builders overlook: rear shock travel. When you position the rear axle above the leaf springs for a clean, aggressive stance, the factory-installed shock absorbers become compressed into a much shorter operating range. This means the shock is no longer working in its ideal travel zone, resulting in harsh ride quality, premature wear, and poor damping control.

That’s exactly why DJM engineered the Rear Shock Extenders for 1978–1987 Chevy C10 pickups—to reposition your shocks back into their proper, vertical operating angle and restore the full amount of usable travel.

These bolt-on shock extenders install directly to the factory shock mounting points and are designed specifically for squarebody C10 trucks running a flip kit or 5″+ drop in the rear. By lowering the upper mounting position of the shock, the extender brings the shock body back into a more upright orientation and returns the piston travel to its normal active range. The result? Smoother ride, more controlled rebound/compression, and longer shock life.

Sold in Pairs for both rear shock locations.

 Key Features & Benefits

 Why Shock Extenders Are Essential After a Flip Kit

Lowering the rear of a classic C10 using a flip kit literally flips the axle from under the leaf spring to on top of the spring. That automatically lifts the axle several inches closer to the frame and reduces the overall suspension travel. The shock itself remains in the factory location, which means:

• The lower shock mount ends up much closer to the upper mount

• The shock begins resting in its mid-to-upper range of travel

• Any additional movement (bumps, potholes, cruising) pushes the shock into its bottomed-out position

When a shock bottoms out, it cannot properly compress or absorb energy. That leads to:

• Rough and unstable ride

• Loss of control over rebound

• Premature shock failure

Adding a pair of Rear Shock Extenders lowers the upper mounting point, increasing available shock travel and placing the piston back into its correct operational range. Even more importantly, it keeps the shock more vertical, which is how it was designed to function.

 How It Works

Installing rear shock extenders is one of the easiest upgrades you can do to a lowered C10. Simply remove the OEM bolt holding the rear shock in place at the frame, slide the extender bracket in between, and reinstall the hardware using the supplied grade-8 bolts. The extender moves the upper mounting location down by several inches, depending on your final drop height, bringing the shock closer to perpendicular.

Once installed, your shocks will benefit from:

• Increased travel distance

• Improved damping control

• Reduced stress on the shock shaft and seals

• A smoother ride with less vibration and bounce

Note: These are designed to work best when combined with properly valved lowered shocks, such as the DJM 2100 series (sold separately).
Order those here: https://store.gaugemagazine.com/2100/

 What’s Included

• (2) Rear Shock Extender Brackets

• Grade-8 Mounting Hardware

• Installation Instructions

Sold as a matched pair for the driver and passenger side of your C10.

 Compatibility / Fitment

Not designed for 4×4 models or rear coilspring conversions.

 Installation Overview (DIY Friendly)

1. Safely support rear of truck with jack stands

2. Remove factory rear shocks from upper mount

3. Install Shock Extender at the factory mount using supplied hardware

4. Reinstall shock to the new mounting point on extender

5. Lower truck and verify vertical travel

? Entire process can be completed in under 1 hour using basic hand tools.

 Why Customers Choose DJM Shock Extenders for Squarebody C10s

Lowering a 1978–1987 Chevy C10 is one of the most popular upgrades in the classic truck world—and DJM has been producing high-quality suspension solutions for these trucks for decades. These extenders are designed specifically for the geometry of the C10 chassis and have been tested exhaustively in real-world street and show conditions.

Benefits you’ll notice immediately:

• Less bounce over bumps

• No more hard bottoming

• A smoother, more predictable ride

• Improved shock response and stability

• Longer shock life 

 Frequently Asked Questions

Q. Do I need shock extenders if I only dropped the rear 3–4 inches?
A. Generally no. These extenders are most effective when you’ve dropped the rear 5 inches or more, typically via a flip kit. If you dropped less than 4″ using shackles or hangers, your shock travel is still within a safe range.

Q. Can I use my factory shocks with these extenders?
A. You can—but for best results, we recommend using lowered shocks like the DJM 2100 that are valved to handle the shorter suspension travel.

Q. Do I need to cut or weld anything?
A. No, these are 100% bolt-on and install using the included hardware.

 Order Your 1978–1987 Chevy C10 Rear Shock Extenders Today

If you’ve already lowered the rear of your squarebody C10, don’t let reduced shock travel limit your ride quality. DJM’s Rear Shock Extenders restore proper suspension function and are one of the most important upgrades you can make after a flip kit or 5+ inch drop.

 Restores shock travel
 Maintains proper vertical angle
 Sold in pairs
 Direct bolt-on install
 Built for classic C10s

 Place your order today !