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Unity rear shock absorber kit box with two gas charged shocks visible

Unity

Unity Rear Shock Absorber Kit 2-251120-001

SKU CH-42KA-0YZQ8

Kit of two nitrogen gas-charged rear shock absorbers fits 2002-2009 GM and Isuzu SUVs with rear coil springs

  • Twin-tube gas-charged design delivers reliable rear damping
  • Direct OE replacement fits 2002-2009 Trailblazer, Envoy, SSR and more
  • Kit includes two nitrogen-charged shocks for complete service
  • Unity's 50-year aftermarket heritage backs long-lasting performance
  • Trouble-free installation restores ride control on coil-spring models

Rear Shock Kit for GM SUVs

This Unity rear shock absorber kit fits 2002-2009 Chevrolet Trailblazer, Trailblazer EXT, GMC Envoy, Envoy XL, Envoy XUV, 2003-2008 Isuzu Ascender, 2003-2006 Chevrolet SSR and 2002-2004 Oldsmobile Bravada models equipped with rear coil springs. The package contains two nitrogen gas-charged shock absorbers designed as direct OE replacements for worn original units.

Sustained Damping Performance

Twin-tube gas-charged construction maintains consistent damping force during extended driving on rough surfaces, reducing fade that occurs when fluid overheats in heavy use. Nitrogen pressurisation keeps the oil column stable so the shocks continue to control body motion through repeated compression and rebound cycles.

Upgrade From Failed OE Shocks

Replaces leaking, noisy or soft factory shocks that no longer hold the rear axle firmly over bumps. The improvement is most noticeable when the original units have lost gas charge or show visible fluid loss, restoring ride height and cornering stability without altering the vehicle's stock suspension geometry.

Highlights

  • Twin-tube gas-charged design delivers reliable rear damping
  • Direct OE replacement fits 2002-2009 Trailblazer, Envoy, SSR and more
  • Kit includes two nitrogen-charged shocks for complete service
  • Unity's 50-year aftermarket heritage backs long-lasting performance
  • Trouble-free installation restores ride control on coil-spring models

Specifications

BrandUNITY

Questions about this item

Does the twin-tube nitrogen gas charge keep the 2-251120-001 kit running cool during all-day driving?

The twin-tube gas-charged design is built to resist fade and maintain consistent damping on extended trips.

What must my vehicle already have for the 2-251120-001 kit to install correctly?

Your vehicle must be equipped with rear coil springs as specified in the fitment notes.

Will the 2-251120-001 kit work alongside the original front struts on a 2004 GMC Envoy?

Yes, the kit is a direct rear replacement for OE shocks on that model and pairs with the existing front suspension.

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