ASR Subframe Reinforcement Brace w/ Swaybar – The Iconic Honda Rear Suspension Upgrade
The ASR Subframe Reinforcement Brace with Swaybar is the ultimate rear suspension starter kit for Honda and Acura performance builds. Since 2005, ASR has been a benchmark name in the Honda community, delivering high-performance rear swaybar solutions trusted by street enthusiasts, show builds, and dedicated race cars worldwide.
This complete system reinforces the factory rear subframe while significantly improving chassis balance and rear-end stability under aggressive driving conditions.
At Torque Lab, this is one of the most proven upgrades for serious Honda chassis development.
Why You Need a Subframe Reinforcement Brace
Honda rear subframes were never designed to handle large aftermarket swaybars without additional support. Installing a stiffer anti-roll bar without reinforcement can cause chassis stress or subframe failure.
The ASR brace distributes load evenly across the subframe, allowing safe use of high-rate swaybars while improving:
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Rear-end stability
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Cornering precision
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Mid-corner rotation
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Overall chassis rigidity
Swaybar Options (Street / Track)
ASR 24mm Solid Swaybar
The 24mm solid bar is ideal for street and occasional track use.
It retains OEM-style geometry but delivers significantly increased stiffness due to its larger diameter and precision hi-tensile steel construction.
Features:
ASR 1” Hollow Swaybar (Discontinued – Limited Availability)
The 1-inch hollow bar was developed as a lightweight alternative while delivering even higher stiffness levels. Despite being lighter than the 24mm version, it provides increased bar rates due to its larger diameter and multi-position adjustability.
Swaybar Rate Comparison
Compared to OEM ITR rear bars:
OEM ITR 22mm
Bar rate: 51 N/mm (292 lbs/in)
OEM ITR 23mm
Bar rate: 60 N/mm (347 lbs/in)
ASR Solid Bar (23.8mm equivalent) – Adjustable
P1: 414 lbs/in
P2: 507 lbs/in
ASR Hollow 25.4mm (1”) – Adjustable
P1: 418 lbs/in
P2: 533 lbs/in
P3: 630 lbs/in
This represents a substantial increase in rear roll stiffness and rotation capability.
Kit Contents
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ASR Subframe Reinforcement Brace
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Complete ASR hardware kit
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ASR 24mm or 1” anti-sway bar
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ASR D-bracket bushings
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ASR billet aluminium D-brackets
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Energy Suspension grease
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ASR Endlink kit
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Installation instructions
Applications
Designed primarily for Honda and Acura chassis commonly used in performance and track applications, including:
Always verify compatibility before ordering.
Built for Street, Track & Motorsport
Whether you are building a clean street car, time attack setup, or full race chassis, the ASR Subframe Reinforcement Brace system provides the structural foundation required for serious rear suspension performance.
Made in U.S.A.
Fitment
This kit is available for multiple Honda and Acura chassis including Civic and Integra platforms. Always select the correct chassis before ordering.
Why Buy ASR from Torque Lab?
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Genuine ASR performance components
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Expert Honda fitment guidance
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EU shipping
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Track-proven suspension knowledge
If you are unsure which swaybar configuration suits your build, contact Torque Lab for technical advice.
