Cusco 1C2 311 B22 22mm Rear Sway Bar for 2020-2026 Toyota GR Supra A90 2.0T/3.0T

Vehicle Fitment

• 2020-2026 Toyota GR Supra 3.0 (A90/A91, DB02/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 Toyota Genuine rear sway bar part number 48812-WAA02
• All OEM bolts and nuts in the rear subframe area are NOT reusable per Cusco installation requirements - new OEM fasteners must be sourced before installation (see Included Components for details)
• Pairs with the Cusco front sway bar (1C2 311 A28, 28mm, sold separately) for a complete front/rear sway bar upgrade
• Position: Rear

Features

• 22mm outer diameter hollow steel construction - a 178% increase in roll stiffness over the OEM 18mm rear sway bar
• High-strength steel hollow design reduces rear body roll during cornering while maintaining a lightweight profile
• Significantly improves rear-end stability, corner exit traction, and overall chassis balance
• Reduces understeer tendency by increasing rear roll stiffness relative to the front
• Durable Cusco blue powder-coated finish for corrosion resistance and a professional appearance
• Includes polyurethane bushings, mounting brackets, and spacers for a complete bolt-on installation
• Approximately 3 hours installation time - requires rear subframe partial lowering for access
• Direct replacement for the factory rear sway bar - no permanent modification to the vehicle required
• Designed and tested for both street and motorsport use including SCCA, autocross, and track days

Specifications

• Part Number: 1C2 311 B22
• Type: Rear Sway Bar (Anti-Roll Bar)
• Position: Rear
• Outer Diameter: 22mm (hollow)
• OEM Outer Diameter: 18mm (hollow)
• Stiffness Ratio vs. OEM: 178%
• Material: High-Strength Hollow Steel
• Finish: Cusco Blue Powder Coat
• Adjustable: No (fixed rate)
• Bushings Included: Yes
• Brackets Included: Yes
• Spacers Included: Yes
• Installation Time: Approximately 3 hours
• OEM Part Replaced: Toyota 48812-WAA02
• JAN Code: 4996338062574

Included Components

• 1x Cusco 22mm Rear Sway Bar (hollow steel, blue powder coat)
• 2x Polyurethane Sway Bar Bushings
• 2x Mounting Brackets
• 2x Spacers
• 1x Mounting Hardware Kit

Product Description

The Cusco 1C2 311 B22 is a 22mm high-strength hollow steel rear sway bar engineered specifically for the 2020-2026 Toyota GR Supra A90/A91 platform. It replaces the factory 18mm rear anti-roll bar with a thicker, stiffer unit that delivers a 178% increase in rear roll resistance over stock. This upgrade directly reduces rear body roll during hard cornering, improving rear-end stability, corner exit traction, and overall chassis balance. By increasing rear roll stiffness relative to the front, this sway bar also helps reduce the understeer tendency inherent in the Supra's factory suspension tuning, resulting in a more neutral and driver-adjustable handling character.

The bar is constructed from hollow high-strength steel to maximize torsional rigidity while keeping weight to a minimum, and it is finished in Cusco's signature blue powder coat for a professional appearance and long-term corrosion protection. The kit includes polyurethane bushings, steel mounting brackets, and spacers, making it a complete bolt-on replacement for the OEM bar. Installation takes approximately three hours and requires partial lowering of the rear subframe for access. Per Cusco's installation guide, all OEM bolts and nuts in the rear subframe area are single-use and must be replaced with new Toyota Genuine fasteners during installation.

For optimal front-to-rear balance, Cusco recommends pairing this rear sway bar with their corresponding front sway bar (1C2 311 A28, 28mm, sold separately), which increases front roll stiffness by 194% over the OEM 24mm front bar. Together, the front and rear sway bar combination delivers a balanced and predictable handling profile that has been validated in SCCA B-Street competition. This sway bar fits both the 2.0L Turbo and 3.0L Turbo GR Supra across all model years, including the facelifted 2023+ A91 variants.