Best Trailer Hub Conversions for Mobile Homes and 5th Wheels
Choosing the right trailer hub conversion for a mobile home axle ensures safe, reliable towing and compatibility with common bearing and bolt patterns. This guide highlights five reputable options, detailing key features, compatibility, and what to check before purchase. Whether upgrading to a 6 on 5.5″ or 5 on 4.75″-style hub, these kits cover popular weight ratings and spindles used on mobile home axles in the United States.
Summary Of Chosen Products
| Product | Brand | Bolt Pattern | Weight Rating | Key Highlight |
|---|---|---|---|---|
| SCITOO Trailer Hub Assembly | SCITOO | 5 on 9.4″ | 3500 lbs | Includes brake drum; needs specific inner/outer bearings |
| RVI-H-6550-2 Idler Axle Kit | Generic | 6 on 5.5″ | 6000 lbs per pair | Includes hubs and races; ideal for two-hub setups |
| OZISENS 5200-6000 lbs Kit | OZISENS | 6 on 5.5″ | 5200-6000 lbs | Pre-lubricated, complete kit with bearings |
| Southwest Wheel 5-9.4″ Hub | SOUTHWEST WHEEL | 5 on 9.4″ | 6000 lbs | Rim clamps and standard mobile home setup |
| dreamdragon Idler Hub Kit | dreamdragon | 6 on 5.5″ | 5200 lbs | Complete kit with bearings and seals |
SCITOO Trailer Hub Assembly 12X2
The SCITOO hub assembly is designed for mobile home applications with a 5 on 9.4″ bolt pattern and a 3500 lb rating. It requires L68149 inner cone bearing and LM67048 outer cone bearing (not included) and works with a 1.938″ grease seal. This unit includes a new 12 x 2 brake drum and is compatible with standard mobile home axles. Check bearing availability and seal size before ordering to ensure a proper fit.
RVI-H-6550-2 Idler Axle Kit
RVI-H-6550-2 is a two-hub kit for mobile homes rated around 6000 lbs. It includes two hubs (6×5.5″ bolt pattern), two 22520 races, two 15245 races, and 12 lug nuts. The kit is designed to fit most 6-lug idler axles on mobile home trailers. As with all hub kits, confirm your spindle size and bolt pattern prior to purchase to ensure compatibility with your existing axle components.
OZISENS 5200-6000 lbs Hub Kit
This OZISENS kit covers 5200–6000 lb trailers with a 6 on 5.5″ bolt pattern and a 1.25″ to 1.75″ spindle range. It includes precalc bearings (25580 inner and 15123 outer), seals, lug nuts, and all necessary hardware for a complete installation. Suitable for EZ-Lube spindles, it requires verification of spindle dimensions to ensure fitment with existing components.
Southwest Wheel 5-9.4″ Trailer Hub
Southwest Wheel’s 5-9.4″ hub targets mobile home axles rated around 6000 lbs. It uses 68149 inner and 67048 outer bearings and ships with rim clamps and 9/16″ bolts. The unit is manufactured to automotive standards in ISO/TS-16949 registered facilities, ensuring reliability for long-term use in mobile home setups. Confirm your bearing numbers and bolt pattern for compatibility.
dreamdragon 5200 lb Idler Hub Kit
The dreamdragon kit is designed for 5200 lb axles with a 6-stud, 5.5″ bolt circle. It uses inner bearing 25580 and outer bearing 15123, providing a complete installation set with seals, grease caps, lug nuts, and more. It is specifically engineered for #42 spindles, offering a precise fit that improves wheel stability and reduces operating friction. Always verify spindle compatibility before purchase.
Buying Guide: Key Purchase Considerations
- Bolt pattern compatibility: Mobile home axles commonly use 5 on 9.4″ or 6 on 5.5″ patterns. Confirm your existing hub’s bolt circle to ensure a proper match.
- Weight rating: Choose a hub kit that matches or exceeds your trailer’s gross vehicle weight rating (GVWR). Common ranges include 5200–7000 lbs per axle pair.
- Bearing compatibility: Bearing numbers (e.g., 68149/ LM67048, 25580, 15123) determine fit with inner/outer races and seals. Verify both inner and outer bearings are included or available for purchase separately.
- Spindle type: EZ-Lube and tapered spindles are common; confirm spindle diameter and the seal size (I.D. and O.D.) to ensure compatibility with grease seals and lubrication methods.
- Complete kit contents: Some kits include everything (bearings, races, seals, lug nuts, grease caps), while others require extra components. Weigh the total cost and reconstructability of the system.
- Installation considerations: Some kits are designed for two hubs in a pair; others are single-idler hub assemblies. If replacing both hubs, prefer a matched pair to maintain balance and alignment.
- Quality and standards: Look for kits manufactured to automotive industry standards and ISO/TS certifications for reliability and safety on the road.
- Vendor support and instructions: Clear installation guides and customer support can simplify alignment and prevent misfit errors during replacement.