Powerflex Black – Right Rear Differential Mount Insert – Subaru BRZ

The Powerflex Black Series right rear differential mount bush insert (PFR69-831BLK) is designed to stiffen the original OEM differential mount, eliminating compliant movement and stabilising the rear end of high-performance cars such as the Subaru BRZ, Toyota GT86 and GR86.

Manufactured from the special high-stiffness Black Series polyurethane compound (95 Shore A), this insert fills the voids in the original rubber bush (OEM part number: 41322CA000). By reducing unwanted flex and twisting of the differential housing under hard acceleration, braking and rapid gear changes, it ensures immediate rear-axle response, improves torque transfer to the road and greatly reduces wheel hop.

Installation is simple and cost-effective, as it fits directly inside the factory OEM mount without replacing the complete assembly. The component corresponds to position #11 in the rear suspension exploded diagram.

Features

• Type: Right rear differential mount bush insert
• Product type: Polyurethane bushes and mounts
• Series: Powerflex Black Series (for track, rally and motorsport use)
• Material: High-performance 95 Shore A polyurethane (black)
• Reference OEM part number: 41322CA000
• Diagram position: #11 (see image in the description)
• Manufacturer part number: PFR69-831BLK
• Quantity per vehicle: 1
• Differential stability: Reduces rear differential movement under load
• Performance and traction: More immediate, effective power transfer, greater rear-end precision and reduced wheel hop
• Direct-fit installation: Simple plug & play fitment to the original OEM mount

Note

As this is an extremely stiff Black Series (95A) component developed for competition and track use, installation may cause a slight increase in vibration and noise (NVH) inside the cabin.