Description

The CUSCO Rear Knuckle Pillow Ball Bushing is a high-performance suspension component designed to replace the factory rubber bushing within the rear knuckle (upright) with a rigid pillow ball (spherical) bushing. This critical upgrade directly connects the rear suspension linkage to the wheel hub assembly, eliminating deflection at one of the most pivotal points in the suspension system. The result is a dramatic improvement in rear-wheel precision, steering response, and overall chassis feedback—essential for competitive and performance driving.

Product Highlights

🎯 Direct Knuckle-to-Linkage Spherical Connection
Replaces the compliant factory rubber bushing inside the rear knuckle (upright) with a high-rigidity spherical pillow ball bushing, creating a zero-deflection, direct mechanical link between the suspension arm and the wheel hub.

⚡ Ultimate Rear-Wheel Precision & Responsiveness
By eliminating bushing flex at the knuckle—the final pivot point before the wheel—this upgrade delivers immediate and exact rear-wheel response to suspension inputs, enhancing turn-in sharpness, cornering stability, and overall chassis agility.

🔧 Direct OEM Bushing Replacement – Complete Set
Engineered as an exact, press-in replacement for the factory knuckle bushing. The set includes two bushings (left and right) to ensure symmetrical performance and balanced handling across the rear axle.

🏁 Competition-Grade Suspension Accuracy
Ideal for track, autocross, and high-performance driving where eliminating every source of compliance is critical for maintaining precise wheel alignment, optimal tire contact, and consistent, predictable handling at the limit.

⚙️ Maintains Critical Suspension Articulation
While removing all unwanted lateral and longitudinal flex, the spherical bearing design allows for the necessary rotational articulation of the suspension linkage, preserving correct geometry without the delay or vagueness of rubber compliance.

Technical Specifications

• Product: Rear Knuckle Pillow Ball Bushing

• Product Code: 1C7-464-NV

• JAN Code: 4996338025395

• Contents: Set of 2 (left and right)

• Type: Genuine bushing replacement (spherical/pillow ball)

• Application: Inside the rear knuckle (upright)

Installation & Performance Notes

🔧 Mandatory Professional Pressing & Alignment
Installation is a precision pressing operation that requires specialized tools to safely and correctly remove the old bushing and install the new spherical unit. Must be performed by a qualified suspension specialist. A full rear-wheel alignment is mandatory after installation.

⚠️ Significant Increase in NVH (Noise, Vibration, Harshness)
This upgrade transmits substantially more road noise, impact shock, and high-frequency vibration directly into the chassis and cabin. This is the definitive trade-off for achieving the highest possible level of suspension precision and feedback.

🎯 For Dedicated Competition & Maximum-Performance Builds
Recommended only for vehicles used primarily for racing, time attack, or by drivers who prioritize absolute suspension accuracy over all aspects of comfort and daily drivability. Not suitable for street-focused builds.

Compatible Vehicle