Find the right trailer axle kit 5200 for reliable highway work. This guide highlights five popular electric or hydraulic braking running gear kits that fit 5200 lb tandem axles and 6 on 5.5 inch bolt patterns. Each option targets a specific buyer: DIY trailer builders, campers upgrading a utility trailer, or professional installers seeking a complete running gear kit. Use the quick comparison table to narrow choices before reading detailed sections.
| Product | Best For | Key Benefit |
|---|---|---|
| Salo Trailer Parts 5200 lb Tandem Axle Kit | Full retrofit of a mid-size trailer | Integrated running gear with tires and brakes |
| Aeagle 6 on 5.5″ Brake Drum Kit | Budget brake upgrade | Includes inner/outer bearings and self-adjusting brakes |
| SEHNSUCHT 6-Hole Brake Kit | All-in-one drum and brake upgrade | Complete brake drum with self-adjusting brakes |
| Southwest Wheel Hydraulic Brake Kit | Hydraulic braking reliability | Hydraulic plates for corrosion resistance and longevity |
| Dreamdragon 5,200 lbs Brake Kit | Versatile compatibility | Self-adjusting brakes with wide axle compatibility |
When choosing, consider axle type (lip or Nev-R-Lube), bolt pattern (6 on 5.5), bearing compatibility (25580 inner / 15123 outer), and whether you need a full running gear setup or a brake-only upgrade. The products below are organized to help you compare installation scope, included bearings, and brake configurations for 5200 lb trailers. For accurate fit, verify your axle model and mounting hardware before purchase.
Salo Trailer Parts 5200 lb Tandem Axle Kit

This tandem axle kit is designed for 5200 lb capacity with a 95 inch hub face and 80 inch spring center. It uses a 6 on 5.5 inch bolt pattern and includes electric brake axles with a complete running gear setup, including leaf spring suspension, U-bolts, hangers, and mounted ST225/75R15 tires on 6 lug wheels. Best for trailer builders upgrading a mid-size unit with a ready-to-install package. A key feature is the Rockwell American Posi-Lube system, allowing grease lubrication through built-in zerks without hub removal. Limitation: designed for certain frame widths; verify compatibility with your trailer’s frame width and mounting points.
Aeagle 6 on 5.5″ Brake Drum Kit

Includes two 6 on 5.5″ brake drums and both inner and outer bearings (25580 and 15123). The kit is compatible with standard lube axles from brands like Dexter, Al-Ko, Lippert, and Quality. It also contains all necessary seals, nuts, and the two self-adjusting electric brakes (left and right). Choose this if you need a complete drum-and-brake replacement with explicit bearing compatibility. Caution: Not suitable for Nev-R-Lube axles or Airstream Classic units made after mid-2005.
SEHNSUCHT Trailer Axle Electric Brake Kit

Premium 12″ x 2″ brake drums with self-adjusting electric brakes, designed for 5200 lb axles. The kit includes two brake drums, bearings, seals, dust covers, hub nuts, and mounting hardware. Best for those seeking a robust, self-contained braking solution with corrosion-resistant components. Best for users prioritizing long-term durability and ease of maintenance. Limitation: Some components assume standard lube axles; verify compatibility with your specific axle model.
Southwest Wheel 5,200 lbs Hydraulic Brake Kit

This kit provides a complete hub-and-drum assembly with 12″ x 2″ drums and 6-5.5″ bolt circle, plus hydraulic brake plates for corrosion resistance. It’s versatile, designed to work with a wide range of axle brands (Al-Ko, Dexter, Lippert, Quality). Choose this if you want hydraulic braking with durable plating and compatibility across major axle brands. Caution: Confirm the brake plate style matches your existing system to avoid fit issues during installation.
Johnson Trailer Parts 5200 lb Tandem Axle Kit

This 5200 lb tandem axle kit features a 94 inch hub face and 80 inch spring center, with a 6 on 5.5 bolt pattern. It includes electric brake axles and a full Running Gear Kit with leaf springs, U-bolts, hangers, and ST225/75R15 tires. It also adds tandem fenders. It is best for those seeking a complete retrofit with an emphasis on a broader mounting footprint and preassembled fenders. Limitation: Slightly shorter hub face than other kits; verify frame width compatibility and mounting points for your trailer.
Racewill 4 Sets Bearing Kit for 5200-7000 Lb Axles

This is a comprehensive bearing kit with 25580 and 15123 bearings, seals, caps, spindle nuts, cotter pins, washers, and more. It’s designed for precise fit on tandem axles within 5200-7000 lb range and supports a quick rebuild of hubs. Best for those performing maintenance or replacements with a plan for spares. Caution: Intended for D42 spindles; ensure your spindle type matches the kit’s specifications.
Buying Guide
What to ask before buying a trailer axle kit 5200: Which brake system do you prefer—electric or hydraulic? Do you need a fully mounted running gear kit with tires and fenders, or just the brake components? Confirm bolt pattern, hub face, and spring center measurements to ensure a proper fit. How important is corrosion resistance, and do you need epoxy-coated drums or plated brake plates? Consider whether you must match existing axles from Dexter, Al-Ko, Lippert, or Quality brands for universal compatibility. Finally, assess maintenance access—do you want grease zerk access through the hub or standard service without hub removal?
FAQ
Q: Will these kits fit all 5200 lb trailers? A: They are designed for common 6 on 5.5 bolt patterns and similar hub-face measurements; confirm your axle model, bearing sizes, and frame width first.
Q: Should I choose electric or hydraulic brakes? A: Electric brakes are common for lighter maintenance, while hydraulic brakes may offer smoother stopping on longer trailers; verify compatibility with your hub and brake plates.
Q: What bearings should I check? A: Look for 25580 inner bearings and 15123 outer bearings as a typical pair for many 5.2k kits; ensure seals, dust caps, and hub nuts are included.
Q: Are fenders included? A: Some kits include tandem fenders; others require separate purchase. Check product listings for fender availability if needed.
Q: Is this suitable for Nev-R-Lube axles? A: Some kits are not compatible with Nev-R-Lube; verify axle lubrication type before ordering.