Cusco 1C2 492 TP Trunk Bar Plus Harness Power Brace for 20-26 Toyota GR Supra

Vehicle Fitment

• 2020-2026 Toyota GR Supra 3.0 (A90/A91, DB42, B58 3.0L Turbo DOHC I6, RWD)
• 2020-2026 Toyota GR Supra 2.0 (A90/A91, DB22/DB82, B48 2.0L Turbo DOHC I4, RWD)

Fitment Notes

• Compatible with both 2.0L Turbo (B48) and 3.0L Turbo (B58) GR Supra models across all model years
• Fits both pre-facelift A90 (2020-2022) and facelifted A91 (2023-2026) models
• Replaces the factory OEM aluminum bar in the front section of the trunk/luggage area - OEM bar must be removed
• Trimming of trunk base covers is recommended for a clean finished installation
• Provides additional rearward seat adjustment clearance for taller drivers (6'+ height)
• Position: Rear (trunk interior / luggage room)

Features

• Dual-purpose design functions as both a rear chassis reinforcement brace and a harness mounting bar
• 4 threaded mounting points allow easy installation of harness eye bolts for racing safety harnesses
• Replaces the factory aluminum trunk bar with a high-strength steel oval-section pipe for significantly increased rigidity
• Reduces rear chassis flex under cornering loads, keeping rear suspension geometry aligned for optimal handling
• Provides the same rigidity benefit as stitch welding without permanent chassis modification
• Bolt-on installation using existing OEM mounting locations in the trunk space - no drilling required
• Cusco metallic blue powder-coated finish for corrosion resistance and a premium trunk appearance
• Slimmer profile than the OEM bar provides additional clearance for driver seat rearward travel
• Developed using Cusco's motorsport chassis stress simulation data for optimized reinforcement

Specifications

• Part Number: 1C2 492 TP
• Type: Power Brace Trunk Bar Plus (Chassis Brace / Harness Bar)
• Position: Rear (trunk interior)
• Shaft Material: Steel, Oval Cross-Section
• Finish: Cusco Metallic Blue Powder Coat
• Harness Mounting Points: 4 threaded eye bolt mounts
• Installation: Bolt-on, replaces OEM aluminum trunk bar
• Compatible Chassis: DB22, DB42, DB82 (A90/A91 GR Supra)
• UPC: 4996338110145

Included Components

• 1x Cusco Power Brace Trunk Bar Plus Assembly (steel oval shaft with harness mounting points)
• 1x Mounting Hardware Kit

Product Description

The Cusco 1C2 492 TP Power Brace Trunk Bar Plus is a dual-purpose chassis reinforcement brace and harness mounting bar designed specifically for the 2020-2026 Toyota GR Supra A90/A91. It replaces the factory aluminum bar located in the front section of the trunk/luggage area with a high-strength steel oval-section pipe that dramatically increases rear chassis rigidity. At the same time, the bar includes four threaded mounting points for harness eye bolts, allowing it to serve as a proper harness bar for racing safety harnesses - making this a single part that delivers both structural performance and track safety compliance.

By replacing the relatively weak OEM aluminum trunk bar with a rigid steel unit that ties into the existing structural mounting points, this Power Brace minimizes rear body flex under high cornering loads, ensuring the rear suspension operates at its intended geometry for consistent handling and improved traction. The effect is comparable to chassis stitch welding but is completely reversible and requires no permanent modification. The bar's slimmer profile compared to the OEM piece also provides additional rearward seat adjustment clearance, which has been noted by owners 6 feet and taller as a significant comfort improvement for daily driving and track use.

Installation is straightforward: the factory aluminum trunk bar is unbolted and removed, and the Cusco Power Brace bolts directly into the same mounting locations. Minor trimming of the trunk base covers is recommended for a clean finished appearance. The steel construction is finished in Cusco's signature metallic blue powder coat for a professional look that complements the Supra's trunk interior. This trunk brace pairs with Cusco's full suite of GR Supra chassis reinforcement products - including the front Engine Room Power Brace (1C2 492 ER), rear member brace (1C2 492 R), and seat rail braces (1C2 492 SPF/SPR) - for a comprehensive rigidity upgrade from front to rear.