THE ORIGINAL Honda/Acura Rear Subframe Brace

ASR Subframe Brace Design for Honda and Acura Vehicles

Upgrading to a larger rear anti-roll bar is a highly effective way to reduce understeer in front-wheel-drive cars, particularly for performance driving. However, many Honda and Acura models from the 1990s, constructed with thinner-gauge steel, are prone to rear subframe damage when equipped with a larger anti-roll bar. The ASR subframe reinforcement brace addresses this issue by significantly reducing the risk of subframe tearing through a robust, carefully engineered design.

Design Features

• Load Distribution: The brace minimizes stress on the anti-roll bar attachment points by distributing forces across a wider area, using the lower control arm bolt as a secure anchoring point.

• Signature Billet Plate: A wide, high-strength billet plate ties the subframe ends together, stabilizing all mounting points and preventing movement under load.

• Contoured Billet Backing Plates: Precision-machined backing plates further reduce stress at the subframe mounting points, enhancing durability.

Benefits

These design elements collectively reduce the stress imposed on the subframe when a larger rear anti-roll bar is installed, ensuring greater reliability and performance for enthusiasts and racers.

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ASR subframe brace is a direct bolt-on part and is compatible with these anti rear sway bars:

• ASR 24mm swaybar
• ASR 1" hollow swaybar
• ASR 32mm hollow bar
• OEM Integra/Civic Type R 22-23mm sway bar
• Mugen 26mm swaybar

Contents:

1 - ASR subframe reinforcement brace

1 - ASR subframe brace hardware kit

1 - Instructions

 

 INSTALLATION NOTES:

• 1999-2000 Civic Si (EM1).  Supplied backing plates are not used for installation . 
• EG Civic and DC2 Integra with OEM sway bar, mounting hole threads must be drilled out for proper backing plate engagement.

          

MADE IN U.S.A.

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ASR Subframe Brace How-To Install

EK/EG Subframe Brace

DA/EF Subframe Brace

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EK Subframe Install Instructions

EG Subframe Install Instructions

EF Subframe Install Instructions

DA Subframe Install Instructions

DC5/EP3 Subframe Install Instructions