Torque Solution TS-SU-427BK-SB Solid Rear Diff Brace for 08-25 Subaru WRX/STI

Vehicle Fitment

• 2008-2025 Subaru WRX (All trims; turbocharged H4 engines)
• 2008-2021 Subaru WRX STI (All trims; turbocharged H4 engines)

Features

• CNC-machined from 6061 billet aluminum for high strength
• Black anodized finish with engraved Torque Solution logo
• Solid billet differential bushings with stainless steel pins
• Eliminates differential movement under load
• Reduces drivetrain flex for improved traction
• Helps minimize wheel hop during hard acceleration
• Direct bolt-in replacement for OEM cast brace
• Limited lifetime manufacturer warranty

Specifications

• Part Number: TS-SU-427BK-SB
• Material: 6061-T6 Billet Aluminum
• Finish: Black Anodized
• Diff Bushing: Solid billet with stainless steel pins
• Mounting Style: Direct bolt-on to rear differential and subframe
• Torque Spec (Brace to subframe): ~81 ft-lb
• Torque Spec (Brace to differential housing): ~37 ft-lb
• Warranty: Limited lifetime from Torque Solution

Included Components

• 1x Torque Solution Solid Rear Differential Brace
• 2x Solid billet diff bushings (installed)
• 2x Stainless steel bushing retention pins
• Install hardware (bolts)

Product Description

The Torque Solution TS-SU-427BK-SB Solid Billet Rear Differential Brace is an engineered performance upgrade designed to replace the OEM cast rear diff brace on turbocharged Subaru WRX and STI models. Machined from 6061 billet aluminum with a sleek black anodized finish, this brace dramatically increases rear drivetrain rigidity and eliminates unwanted differential movement under power.

With solid billet bushings and stainless steel pins included, this brace helps reduce wheel hop and drivetrain flex during hard launches and spirited driving. This makes it particularly beneficial for high-horsepower builds, track days, and performance-oriented street cars. The direct bolt-in design ensures a straightforward installation with common tools - no welding or fabrication required.