SHIBATА R31S118 GRK RWD Single-Arm Upper Arm Shaft

PO Closed 23rd SEP 2025

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Introduce a new standard of efficiency and performance to your GRK chassis with the SHIBATA GRK RWD Single-Arm Upper Arm Shaft. This critical component is the key to unlocking a revolutionary single-point suspension setup, working in concert with the vertical upper bracket to deliver unmatched maintainability and a noticeable reduction in weight.

Key Features

• Fabricated from a high-strength material and treated with a special wear-resistant coating for exceptional durability.

• Serves as the essential pivot shaft that enables the conversion to a single-arm upper arm configuration.

• Designed specifically for use with the compatible SHIBATA Vertical Rear Upper Bracket (sold separately).

• Allows the upper arm to be supported at a single point on the damper stay instead of the traditional two-point setting.

Why Choose This?

• This conversion significantly simplifies suspension adjustments and maintenance, saving crucial time during tuning.

• The reduction in components and hardware contributes to a lighter overall rear assembly.

• Offers a performance-oriented upgrade path for users with a standard vertical upper deck seeking advanced tuning.

Product Information

• Product Name: SHIBATA R31S118 GRK RWD Single-Arm Upper Arm Shaft

• Coating: Special Wear-Resistant

• Function: Enables Single-Point Upper Arm Mounting

• Requires: SHIBATA Vertical Rear Upper Bracket (e.g., R31S341BK/PU/RD)

Choose this arm shaft to complete the transformation to a modern, single-point suspension system. It is the definitive component for drivers focused on achieving the highest level of mechanical efficiency and tuning flexibility from their GRK platform.