KYB KG5191 Shock Absorber - Rear

Rear Performance Shock for Colorado and Canyon

The KYB Gas-a-just KG5191 is a rear monotube shock absorber built for Chevrolet Colorado and GMC Canyon applications that need firmer control than a standard twin-tube design. It uses separate gas and oil chambers to deliver quick response, consistent damping, and reduced fade during demanding driving.

For drivers of the 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon, this rear shock is a direct performance upgrade for trucks that work, tow, or run larger wheels and tires. The KYB Gas-a-just line is tuned for responsive handling without sacrificing everyday ride quality.

Key Features

• Fits rear suspension applications on 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon
• Monotube design separates gas and oil for fade-resistant operation
• Up to 25% more damping performance than original equipment shocks
• Higher gas pressure improves steering response and suspension control
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• Designed specifically for Colorado and Canyon valving and component requirements
• Part number KG5191 for easy identification

Product Details

KYB Gas-a-just shocks use an air-free hydraulic working area for control and a high-pressure nitrogen chamber with a floating piston for immediate performance when load or road conditions change. That design helps maintain consistent damping on rough pavement, during towing, and when the vehicle is carrying heavier tires and wheels. This part cross-references Monroe Shocks & Struts 911228 for the same application.

Measured specifications include a compressed length of 13.23 inches, extended length of 20.47 inches, and stroke length of 7.24 inches. Mounting dimensions are E2(14X42.5) at the lower mount and E3(61.6X87X25) at the upper mount. The KG5191 is also listed for 2006 Isuzu i-280 rear and 2007-2008 Isuzu i-290 rear applications.

Common Problems This Shock Can Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or hauling
• Soft or inconsistent rear damping from worn OE shocks
• Fade caused by heat and aeration in demanding use
• Loose rear-end feel on trucks with larger tires and wheels

Installation Notes

Verify rear fitment by year, make, model, and suspension configuration before installation. This KG5191 application is listed for Colorado and Canyon models without off-road suspension. Check mount style and shock length against the original unit before final assembly. Professional installation is recommended for proper suspension performance and alignment verification.

Quality Assurance

KYB designs the Gas-a-just line as a monotube shock absorber with performance-focused valving for truck applications that demand consistent control. The KG5191 uses a high-pressure design and a chrome piston rod to support long-term seal durability and stable damping response.