KYB KG9129 Suspension Strut - Rear

KYB Gas-a-Just Rear Strut for Toyota Tercel

The KYB Gas-a-Just KG9129 is a rear suspension strut built as an OE-style monotube replacement for 1987-1990 Toyota Tercel models. It is engineered to restore control, steering response, and ride consistency for daily driving, towing, and vehicles running larger tires or wheels.

Key Features

• Monotube design separates gas and oil for fade-resistant operation and quick response.
• Provides up to 25% more damping performance than original equipment shocks.
• Higher gas pressure helps improve steering response.
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage.
• Valving and components are designed specifically for Toyota applications.
• Supports electronic safety systems by helping the suspension operate as the vehicle manufacturer intended.
• Rear position fitment for 1987-1990 Toyota Tercel.

Product Details

KYB Gas-a-Just struts use two working chambers: an air-free hydraulic section for control and responsiveness, and a high-pressure nitrogen gas chamber with a floating piston for consistent ride quality and instant performance demand. For Toyota Tercel rear suspension service, KG9129 is a direct-fit replacement focused on restoring original handling characteristics while adding additional damping reserve for heavier use. This part cross-references Monroe Shocks & Struts (e.g., 71230) for the same application.

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced steering response and loose handling feel
• Ride fade during repeated suspension movement
• Fluid leakage related to worn piston rod seals
• Loss of control on Toyota Tercel vehicles carrying added load or larger tires

Installation Notes

Fits 1987-1990 Toyota Tercel, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5088, to reduce noise and vibration, and a KYB strut boot, part number SB107, to help protect the strut from dirt, debris, and salt. Part number KG9129 should be matched to the rear application before installation.

Quality Assurance

KYB is a major OE suspension supplier, and the Gas-a-Just line is built as an OE monotube replacement for restoring factory-style capability with added damping performance. Part number KG9129 is engineered for the 1987-1990 Toyota Tercel rear suspension application.