KYB KG5414 Shock Absorber - Front or Rear

KYB Gas-a-Just Rear Shock for Ford Trucks

The KYB Gas-a-Just KG5414 is a rear monotube shock absorber built for Ford trucks and vans that need firmer control than a standard twin-tube design. It uses separate gas and hydraulic chambers for quick response, consistent damping, and reduced fade during repeated suspension movement.

Compatible with rear applications on the Ford Bronco, F-100, F-150, F-250, F-350, E-100 Econoline, and E-150 Econoline, this KYB Gas-a-Just shock is a direct-fit performance upgrade for vehicles that work, tow, or run larger wheels and tires. Part number KG5414 is also cross-referenced to Monroe Shocks & Struts 37089 for the same application.

Key Features

• Monotube design separates gas and oil for consistent damping and 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 and fluid leakage
• Dust cover included for added protection
• Valving and components are tuned for Ford truck applications
• Supports electronic safety systems by helping the suspension operate as designed

Product Details

The Gas-a-Just line is KYB’s performance-oriented monotube shock family. KG5414 uses an air-free hydraulic working area for responsiveness and a high-pressure nitrogen chamber with a floating piston to maintain ride comfort during normal driving while adding damping on demand. With a compressed length of 11.85 inches, extended length of 18.94 inches, and 7.09 inches of stroke, this shock is sized for rear suspension service on classic Ford truck and van platforms.

Use KYB KG5414 when you want tighter body control, more stable handling under load, and more consistent performance from a rear shock absorber on a Ford Bronco, F-100, F-150, F-250, F-350, or Econoline. The monotube construction is well suited to vehicles that see towing, hauling, or heavier wheel-and-tire setups.

What It Helps Solve

• Excessive rear bounce after bumps or dips
• Reduced control when towing or carrying cargo
• Shock fade from repeated suspension movement
• Soft or delayed steering response from worn rear damping
• Fluid leakage related to seal wear

Installation Notes

Install KG5414 in the rear position only on the listed Ford applications. Verify mount style before installation: upper mount type S1 and lower mount type E2 (12.8 x 38). Confirm compressed length, extended length, and stroke against the vehicle’s suspension travel before final assembly. For best results, replace shocks in matched pairs on the same axle and inspect related suspension bushings, mounts, and tires during service.

Quality Assurance

KYB designs the Gas-a-Just line as a monotube shock absorber with performance-focused valving for truck applications. Part number KG5414 is built to deliver consistent damping and durable operation for rear suspension service on compatible Ford trucks and vans.