Unity 11180 Suspension Strut and Coil Spring Assembly - Front

Front Strut Assembly for Trailblazer and Envoy

Unity 11180 is a pre-assembled front suspension strut and coil spring assembly built for direct replacement on select GM and related SUV applications. It is fully assembled and ready to install, making it a practical choice for restoring front suspension function on vehicles such as the Chevrolet Trailblazer and GMC Envoy.

With coverage across 2002-2009 model years and front-position fitment, this Unity strut assembly is a fitment-based solution for drivers searching for a front strut assembly for 2004 Chevrolet Trailblazer, 2002-2009 GMC Envoy front suspension repair, or a ready-to-install replacement for select Saab 9-7x and Buick Rainier applications.

Key Features

• Pre-assembled complete strut assembly with coil spring and top mount
• Ready to install for plug-and-play style replacement
• Front position application
• Fits select 2002-2009 Chevrolet Trailblazer models, excluding V8 models
• Fits select 2002-2009 GMC Envoy models, excluding V8 models
• Fits select 2005-2009 Saab 9-7x models, excluding V8 models
• Fits select 2003-2008 Isuzu Ascender models, excluding V8 models
• Fits select 2004-2007 Buick Rainier models, excluding V8 models
• Unity part number 11180

Product Details

Unity Automotive has more than 40 years of aftermarket suspension manufacturing experience and offers broad suspension coverage across thousands of SKUs. Part 11180 is part of Unity’s pre-assembled strut line, which combines the strut, coil spring, and top mount into one service-ready unit for front suspension replacement. This helps streamline repair work on aging SUVs where front ride quality, handling response, and suspension noise can decline over time. This part cross-references Monroe Shocks & Struts (e.g., 171341, 181341) for the same application.

What This Part Helps Address

• Front-end clunking or knocking from worn strut components
• Excessive bounce or reduced damping performance
• Uneven ride height caused by fatigued coil spring support
• Steering instability or poor road control from worn front suspension parts
• Time-consuming rebuilds when replacing individual strut components

Installation Notes

Verify exact vehicle fitment before ordering. This assembly is for front applications only and excludes V8 models where noted in the fitment data. Confirm the vehicle year, make, model, and engine configuration against the listed applications before installation. The compressed length is 11.07 in., travel length is 5.01 in., extended length is 16.08 in., and body length is 10.57 in.

• Fits 2002-2009 Chevrolet Trailblazer, front; excludes V8 models
• Fits 2002-2009 GMC Envoy, front; excludes V8 models
• Fits 2005-2009 Saab 9-7x, front; excludes V8 models
• Fits 2003-2008 Isuzu Ascender, front; excludes V8 models
• Fits 2004-2007 Buick Rainier, front; excludes V8 models
• Fits 2002-2006 Chevrolet Trailblazer EXT, front; excludes V8 models
• Fits 2002-2006 GMC Envoy XL, front; excludes V8 models
• Fits 2002-2004 Oldsmobile Bravada, front

Quality Assurance

Unity Automotive positions this strut assembly within its economy-grade suspension lineup while maintaining broad aftermarket coverage and application-specific fitment. The brand’s long-standing focus on suspension parts and large SKU catalog supports consistent replacement selection for vehicles such as the Chevrolet Trailblazer, GMC Envoy, and related platform-mates.