KYB 5550009 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Tahoe Police Package

The KYB Gas-a-Just 5550009 is a monotube rear shock absorber built as an OE-style replacement for the Chevrolet Tahoe Police Package. It uses separate hydraulic and high-pressure gas chambers to deliver responsive damping, stable control, and consistent ride quality during everyday driving and demanding use.

Key Features

• Monotube OE replacement designed for the Chevrolet Tahoe Police Package
• Additional damping over OE design for vehicles that work, tow, or run larger, heavier tires and wheels
• High-pressure monotube construction separates gas and oil for fade-resistant operation and quick response
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Higher gas pressure improves steering response and suspension control
• Dust cover included
• Lower mount type: E2 (14.6 x 42); upper mount type: E2 (14.6 x 42)

Product Details

KYB Gas-a-Just part number 5550009 is engineered for the rear suspension on 2016-2020 Chevrolet Tahoe Police Package models. The monotube design uses an air-free hydraulic working area for control and a separate nitrogen gas chamber with a floating piston for consistent damping. That layout helps maintain performance under load and during repeated suspension movement. This KYB Gas-a-Just shock absorber is a direct-fit rear suspension shock for Chevrolet Tahoe applications that need firmer response than a standard OE-style twin-tube design.

This part cross-references Monroe Shocks & Struts 911545 for the same application.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or carrying added weight
• Soft or delayed suspension response in rear Chevrolet Tahoe Police Package applications
• Steering and body control issues caused by worn rear shocks
• Ride fade from repeated suspension heat buildup

Installation Notes

Fits 2016-2020 Chevrolet Tahoe, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify mount style and dimensions before installation. Part number 5550009 is intended for the rear position only on listed Chevrolet Tahoe Police Package applications.

Quality Assurance

KYB designs the Gas-a-Just line as an OE monotube replacement to restore original suspension capability while adding the response expected in demanding service. The sealed monotube construction and chrome piston rod are used to support consistent damping and reduce seal wear over time.