KYB 3440145 Suspension Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

Restore rear suspension control with the KYB Excel-G shock absorber, part number 3440145. This nitrogen gas-charged, twin-tube shock is calibrated to return original ride control, stability, stopping response, lane-change feel, and handling on select Cadillac XT5 and GMC Acadia models.

Key Features

• KYB Excel-G OEA replacement for original ride characteristics
• Nitrogen gas-charged, twin-tube construction
• Built on KYB OE assembly lines with OE-quality components
• Rear shock absorber for 2017-2018 Cadillac XT5 and 2017-2018 GMC Acadia
• Compressed length: 14.37 in; extended length: 19.61 in; stroke length: 5.24 in
• Lower mount type: E2 (12x58); upper mount type: S1 (10MM)

Product Details

The KYB Excel-G line is focused on restoring factory suspension behavior rather than changing it. Part number 3440145 is engineered for rear suspension service on the 2017-2018 Cadillac XT5 and 2017-2018 GMC Acadia, except vehicles with electronic controlled suspension. For shoppers searching for a rear shock absorber for 2017-2018 Cadillac XT5 or a KYB 3440145 rear shock for GMC Acadia, this Excel-G unit matches the OE-style fit and performance profile expected in professional repair work.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive rear bounce after bumps
• Reduced stability during braking and lane changes
• Loose or unsettled rear suspension feel
• Uneven ride control from worn shock absorber internals
• Loss of original handling response on Cadillac XT5 and GMC Acadia models

Installation Notes and Tips

Verify rear fitment by model year and suspension type before installation. This shock absorber does not apply to vehicles equipped with electronic controlled suspension. Confirm mount style and dimensions against the existing unit: lower mount E2 (12x58), upper mount S1 (10MM), compressed length 14.37 in, extended length 19.61 in, and stroke length 5.24 in. Professional installation and a post-repair suspension inspection are recommended.

Quality Assurance

KYB manufactures Excel-G shocks on the same OE assembly lines used for original equipment production, using OE-quality components and OEA-calibrated specifications to restore designed suspension performance. Part number 3440145 reflects KYB’s OE-focused approach for rear shock replacement on the listed Cadillac XT5 and GMC Acadia applications.