TRZ Motorsports Anti-Roll Bar - Under Housing Mount - Axle Tube Mounts Included - Single Tube (1971 - 1976 Impala / Caprice - B-Body) - 321-203-UHM
Single-Tube Under-Housing Anti-Roll Bar for 1971 - 1976 Impala & Caprice (B-Body)
The TRZ Motorsports 321-203-UHM Anti-Roll Bar is a heavy-duty under-housing system engineered specifically for 1971 - 1976 Chevy Impala and Caprice B-body drag builds. Designed to eliminate chassis twist under load, this ARB ensures both rear tires plant evenly for straighter, more consistent launches.
This setup mounts directly to the rear axle using the included weld-on axle tube brackets. This keeps the bar low and compact while maintaining strong control over rear suspension geometry - ideal for big, heavy B-body platforms making substantial power.
The single-tube ARB uses 1.625" chrome-moly tubing paired with CNC-machined billet steel arms, offering reliable strength for builds up to roughly 1800 HP. TRZ presets the center-to-center link distances based on mount type and B-body geometry and may contact you to confirm measurements if needed.
The complete kit includes billet end caps, mounting hardware, and unwelded HD links that you can trim to achieve the perfect setup for your Impala or Caprice.
Performance Highlights
- Under-housing mounted ARB with included axle tube brackets
- Single-tube 1.625" chrome-moly anti-roll bar
- CNC-machined billet steel arms for durability and strength
- Trim-to-length HD ARB links for precise fitment
- Pre-determined link spacing optimized for B-body geometry
- Includes billet end caps, hardware, and ARB links
- Eliminates chassis twist for consistent drag launches
- Suitable for builds up to ~1800 HP
Quick Specs
- Vehicle Application: 1971 - 1976 Chevrolet Impala / Caprice
- ARB Style: Single-tube standard ARB
- Main Tube: 1.625" chrome-moly
- Mount Type: Under-housing with axle mounts included
- Arms: CNC-machined billet steel
- Includes: Axle mounts, ARB links, billet end caps, hardware
- Part Number: 321-203-UHM
Fitment
- 1971 Chevrolet Impala
- 1972 Chevrolet Impala
- 1973 Chevrolet Impala
- 1974 Chevrolet Impala
- 1975 Chevrolet Impala
- 1976 Chevrolet Impala
- 1971 Chevrolet Caprice
- 1972 Chevrolet Caprice
- 1973 Chevrolet Caprice
- 1974 Chevrolet Caprice
- 1975 Chevrolet Caprice
- 1976 Chevrolet Caprice
Frequently Asked Questions
Why choose an under-housing ARB on a heavy B-body?
It keeps the bar low, provides excellent packaging, and delivers strong control under hard acceleration - perfect for heavy drag platforms.
Is the single-tube ARB strong enough for high-power builds?
Yes. The 1.625" chrome-moly tube and billet arms are suitable for drag cars up to ~1800 HP.
Why Buy from Beefcake Racing?
Beefcake Racing offers fast shipping, verified TRZ products, and expert support. For help selecting the best B-body ARB setup, contact sales@beefcakeracing.com or call 1-855-827-7223.
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