If you’re outfitting a cargo trailer, a reliable carry-on trailer hub kit is essential for safe, smooth travel. This guide highlights five well-matched options that cover a range of axle types and weights. Each pick is best for practical, do‑it‑yourself installs, and each kit includes the core bearings, seals, and fasteners you’ll need. Use the buyer notes to decide which is best for your trailer model, then consult your spindle size and bolt pattern to ensure a perfect fit.
| Product | Bolt Pattern / Size | Best For |
|---|---|---|
| 5×4.5″, 1-1/16″ to 1-3/8″ tapered axle | Heavier-duty trailers with EZ-Lube spindles; includes extra caps and seals | |
| 5×5″, 1-1/16″ to 1-3/8″ tapered axle | Robust 5×5″ option for longer axles; extra parts kit included | |
| 5×4.5″, straight 1-1/16″ spindle | Light-to-medium duty straight-spindle trailers | |
| 5×4.5″, supports 1″ and 1-1/16″ straight spindles | Versatile choice for straight-spindle trailers; good value | |
| 5×4.5″, fits 1-1/16″ to 1-3/8″ spindles (#84) | Pre-assembled, pre-greased option for quick install |
GREPSPUD 2 Sets Trailer Hub Kit — 5 on 4.5
Best for 3500 lb trailers using 1-1/16″ to 1-3/8″ tapered axles with EZ-Lube spindles. The kit includes two sets of 5×4.5″ hubs, outer bearings (L44649), inner bearings (L68149), seals, and lug nuts, plus extra dust caps and rubber plugs for emergencies. This is a value-friendly choice for buyers who want a complete, ready-to-install solution. Caution: verify your axle type and spindle before ordering to ensure compatibility.
GREPSPUD 2 Sets 5 on 5” Hub Kit — 3500 lbs
Best for 3500 lb trailers needing a stronger 5×5″ bolt pattern. Includes two hubs with pre-installed bearings and seals, plus extra caps and plugs for emergencies. This kit is the better choice when a wider bolt pattern is compatible with your trailer. Choose this if your current wheels require 5×5″ hubs and you want a complete kit in one box. Avoid this if your axle is not a match for 5×5″ or if you’re working with tapered spindles outside the stated range.
GREPSPUD 2 Sets 5×4.5″ for 2000 lbs
Best for 2000 lb trailers with straight spindles. Pre-lubricated with L44649 bearings, this kit is straightforward for quick installs and offers 2 hubs, 4 bearings, seals, lug nuts, and installation hardware. It’s a good fit for users who want a reliable, pre-lubricated solution for straight spindles. Note the kit is not suitable for tapered spindles.
Saree 2 Sets 2000Lbs Trailer Hub Kit
Best for dual-compatibility with 1″ and 1-1/16″ straight spindles. The Saree kit covers 5×4.5″ hubs with included L44643 and L44649 bearings for both axle sizes, plus dual grease seals and assorted fasteners. It’s a strong option for mixed-spindle setups or when you’re unsure about your exact spindle size. Limitation: explicitly notes compatibility with straight spindles and does not support tapered spindles.
Redants 2 Sets 3500 LB Trailer Hub Kit
Best for quick-install trailers needing ready-to-use, pre-lubed hubs that fit 1-1/16″ to 1-3/8″ tapered axles. This kit emphasizes pre-assembly and rust resistance, offering a straightforward install path. Caution: verify spindle type and ensure the 5×4.5″ bolt pattern matches your wheel setup, as misalignment can require additional shims or adapters.
Buying Guide: Key Considerations For Carry-On Trailer Hubs
- Axle Type And Spindle Size: Confirm whether your trailer uses straight or tapered spindles and measure spindle diameter. Most kits specify 1-1/16″ or 1-3/8″ options and match to outer and inner bearing IDs.
- Bolt Pattern Compatibility: Popular patterns are 5×4.5″ and 5×5″. Check your existing wheels to ensure the hub matches the wheel bolt layout and offset.
- Weight Rating: Choose a kit that matches or exceeds your trailer’s axle rating (e.g., 2000 lb or 3500 lb). Heavier trailers benefit from larger hub sizes and robust bearings.
- Pre-Lubrication And Hardware: Pre-assembled, pre-lubed kits save installation time. Ensure the kit includes seals, lug nuts, cotter pins, and dust caps or know what you’ll need to source separately.
- Spare Parts And Extras: Some kits include extra dust caps and rubber plugs, which are useful for emergency replacements. Consider kits that provide extra components if you anticipate frequent maintenance.
- Construction And Corrosion Resistance: Look for zinc-plated or coated metal parts to resist rust, especially in boat or RV applications where exposure is higher.
- Packaging And Protection: Strong packaging helps prevent damage during shipment and storage, preserving fit and finish of bearings and seals.
Frequently Asked Questions
What is the difference between 5×4.5″ and 5×5″ hub patterns?
The difference is the distance between the lug holes. A 5×4.5″ pattern is common on lighter trailers and some bass boat trailers, while 5×5″ is a fuller pattern often seen on heavier or specialized setups. Mismatch can prevent wheels from mounting flush or cause alignment issues.
Can I mix hub kits with existing axles?
Only if the bearing sizes, grease seals, and spindle type match. Mixing mismatched components can lead to improper lubrication, heat buildup, or wheel detachment. Always verify spindle diameter and bearing part numbers before mixing parts.
Do these kits include everything needed for installation?
Most kits include hubs, bearings, seals, lug nuts, and dust caps, along with miscellaneous hardware. Some sets provide extra dust caps and rubber plugs. Always check the included components list to avoid buying missing parts separately.
What should I do if my trailer uses a tapered spindle?
Choose a hub kit specified for tapered axles. Kits listed for straight spindles will not fit tapered spindles, and using the wrong kit can compromise safety and performance.
Is pre-lubrication important?
Yes. Pre-lubrication reduces installation time and helps ensure bearings are ready for operation. If a kit lacks pre-lubrication, plan to grease the bearings during installation and re-check during routine maintenance.