Powerful, Self-Adjusting Braking for 7,000 lb Trailer Axles
When towing heavy loads, reliable braking performance isn’t optional—it’s essential. The Ultra-Fab Self-Adjusting Brake Kit P/N 48-979613 is engineered for strength, consistency, and safety on 7,000 lb trailer axles. These 12″ x 2″ brake assemblies automatically maintain the correct adjustment as you travel, ensuring smooth, dependable stopping power with minimal maintenance.
Designed for RVs, heavy-duty cargo haulers, equipment trailers, livestock trailers, and more, this complete brake kit is a smart choice for owners who want long-term performance and peace of mind.
What’s Included in the Kit
The Ultra-Fab Self-Adjusting Brake Kit includes:
- (2) 12″ x 2″ Self-Adjusting Brake Assemblies
- Left-Hand & Right-Hand Units Included
- Designed for 7,000 lb Trailer Axles
- Ready-to-Bolt-On Replacement Assemblies
This is a complete replacement solution—no need to rebuild, replace individual components, or guess at adjustment settings.
Key Features & Benefits
✔ Self-Adjusting Design
The brake assemblies automatically maintain the correct adjustment as the shoes wear. No need for routine manual adjustments—just install and tow with confidence.
✔ Built for 7,000 lb Capacity Axles
Perfect for higher-capacity trailers needing robust, reliable stopping force.
✔ Strong, Heavy-Duty Construction
Built to withstand heat, friction, and demanding towing conditions common with larger trailers.
✔ Smooth, Balanced Braking
Designed to provide consistent, even braking performance—improving control, trailer stability, and stopping distance.
✔ Bolt-On Installation
Fits standard 5-bolt brake flange patterns used on most 7k trailer axles. Mounts quickly without special tools.
✔ Reduced Maintenance Requirements
Self-adjusting function eliminates periodic adjustments and ensures optimum braking performance at all times.
✔ Ideal Upgrade for Worn or Outdated Brakes
Restores braking response, reduces uneven wear, and helps protect your tow vehicle’s braking system.
Why Choose Self-Adjusting Brakes?
Traditional manual-adjusting brakes require regular adjustment to maintain proper shoe-to-drum contact. Over time, as friction material wears, braking performance can decline.
Self-adjusting brakes solve this issue automatically by:
- Keeping brake shoes properly aligned
- Providing consistent braking feel
- Reducing maintenance needs
- Improving safety, especially with heavy loads
For RV owners and trailer users who log frequent miles, this upgrade provides long-term reliability and smoother towing.
Compatibility
This brake kit is compatible with:
- 7,000 lb trailer axles (Dexter, Lippert, Al-Ko, Rockwell, and more)
- 12″ x 2″ brake drums
- Standard 5-bolt brake flanges
Common trailer types include:
- Fifth wheels
- Equipment trailers
- Car haulers
- Dump trailers
- Livestock trailers
- Larger travel trailers
- Enclosed cargo trailers
Where to Buy the Ultra-Fab 12″ x 2″ Self-Adjusting Brake Kit
Available through:
- Ultra-Fab’s official website
- Amazon
- Local RV service centers & dealerships
- Trailer parts suppliers
- RV repair facilities nationwide
Ultra-Fab’s complete brake kits make replacement easy—no guesswork, no piecing together components.
About Ultra-Fab
Ultra-Fab has been manufacturing high-quality RV and trailer products since 1958. Known for reliability, durability, and practical engineering, Ultra-Fab supports RV owners, service centers, and trailer manufacturers with products that improve safety, stability, and performance.
Contact us to schedule a appointment today!
- Office Phone: 209-263-7040
- Hours of operation:
- 8 am to 4 pm Monday-Friday; Closed Saturday & Sunday
- Closed for lunch 12 pm – 1 pm
- Address: 200 S. Cherokee Lane, Lodi, CA 95240
- www.calrvspecialists.com
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