TRZ Motorsports Anti-Roll Bar - Under Housing Mount - Axle Tube Mounts Included - Twin Tube (1978 - 1988 Impala / Caprice - G-Body) - 319-203-UHM-TT
Twin-Tube Under-Housing Anti-Roll Bar for 1978 - 1988 Impala & Caprice (G-Body)
The TRZ Motorsports 319-203-UHM-TT Anti-Roll Bar is the ultra-heavy-duty Twin Tube "Girth Brooks" version designed specifically for serious 1978 - 1988 Impala and Caprice G-body drag racers. Built to deliver maximum torsional strength under extreme load, this ARB ensures both rear tires receive equal force for straighter, harder launches.
This under-housing configuration uses included weld-on axle tube brackets, letting the bar mount directly to the rear housing. The design provides excellent control of suspension behavior while keeping the ARB low and well-packaged - ideal for slammed or back-halved G-body builds.
The Twin Tube construction combines a 1.625" chrome-moly inner tube with a 2.25" chrome-moly outer tube, paired with CNC-machined billet steel arms. This dual-wall design delivers the highest rigidity TRZ offers, built to handle extreme horsepower levels well beyond single-tube bars.
TRZ sets the link spacing specifically for the 1978 - 1988 G-body platform and includes billet end caps, hardware, and unwelded HD links you can trim to proper length for your car's geometry.
Performance Highlights
- Twin Tube "Girth Brooks" dual-wall construction for extreme torsional strength
- 1.625" chrome-moly inner tube + 2.25" chrome-moly outer tube
- Under-housing mounted using weld-on axle tube brackets
- CNC-machined billet steel ARB arms
- Trim-to-length HD ARB links included
- Pre-set center spacing for 1978 - 1988 G-body geometry
- Includes billet end caps, ARB links, and complete hardware
- Eliminates chassis twist and improves launch consistency
- Built for extreme horsepower drag builds
Quick Specs
- Vehicle Application: 1978 - 1988 Chevrolet Impala / Caprice
- ARB Style: Twin Tube "Girth Brooks"
- Main Tubes: 1.625" inner + 2.25" outer chrome-moly
- Mount Type: Under-housing with weld-on axle brackets
- Arms: CNC-machined billet steel
- Includes: Axle brackets, ARB links, billet end caps, hardware
- Part Number: 319-203-UHM-TT
Fitment
- 1978 Chevrolet Impala
- 1979 Chevrolet Impala
- 1980 Chevrolet Impala
- 1981 Chevrolet Impala
- 1982 Chevrolet Impala
- 1983 Chevrolet Impala
- 1984 Chevrolet Impala
- 1985 Chevrolet Impala
- 1986 Chevrolet Impala
- 1987 Chevrolet Impala
- 1988 Chevrolet Impala
- 1978 Chevrolet Caprice
- 1979 Chevrolet Caprice
- 1980 Chevrolet Caprice
- 1981 Chevrolet Caprice
- 1982 Chevrolet Caprice
- 1983 Chevrolet Caprice
- 1984 Chevrolet Caprice
- 1985 Chevrolet Caprice
- 1986 Chevrolet Caprice
- 1987 Chevrolet Caprice
- 1988 Chevrolet Caprice
Frequently Asked Questions
Why choose the Twin Tube version over the single-tube ARB?
The Twin Tube offers significantly more torsional rigidity, ideal for extreme-power G-body drag cars needing maximum control.
Does the under-housing design affect ground clearance?
No. The design keeps the bar tight to the housing, making it compatible with lowered or back-halved G-body setups.
Why Buy from Beefcake Racing?
Beefcake Racing provides verified TRZ components, expert technical help, and fast shipping. For help choosing the right ARB for your G-body, contact sales@beefcakeracing.com or call 1-855-827-7223.
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