When upgrading or relocating a trailer tongue jack, choosing the right mounting plate or bracket is essential for stability and tailgate clearance. This guide highlights five versatile, high‑quality options suited for different A‑frame and 3‑bolt jacks. It’s ideal for trailer owners, RV enthusiasts, and boat trailer operators seeking durable, rust‑resistant mounting solutions. Each product is evaluated for best use case, installation practicality, and potential limitations.
| Product | Best For | Key Benefit |
|---|---|---|
| Shimeyao Tongue Jack Stand Bracket | Heavy‑duty trailer setups | Versatile positioning and durable powder‑coated steel |
| Demimy Trailer Jack Relocation Kit | Full tailgate clearance | Universal 3‑bolt and A‑frame compatibility with tailgate access |
| FUYEAR Heavy Steel Structure Mount Kit | Secure, adjustable mounting | Multi‑hole adjustment for accurate jack positioning |
| MOUNTAIN_ARK A Frame Weld On Plate | Budget, frequent deployments | 4 pack bottom plates for added support |
| Lewmar SWA Jack Plate | Non‑motorized or motorized setups | Flexible installation without removing the motor |
Shimeyao Tongue Jack Stand Bracket

The Shimeyao jack stand bracket supports versatile positioning, enabling easy relocation of the trailer tongue jack stand. It is designed to work with farm jack mounts or heavy‑duty stands, helping tailor the jack position for enhanced stability and load bearing. Built from steel and powder‑coated to resist rust, it aims for long‑term use with secure vehicle support. Best for heavy loads and situations where re‑centering the jack reduces vibration.
Who it’s best for: Owners needing flexible positioning and robust support on trailers with extended tongues. Limitation: Exact fitment varies with jack model; verify bolt compatibility with existing jacks before installation.
Demimy Trailer Jack Relocation Kit

The Demimy kit focuses on tailgate clearance, allowing seamless side‑mount relocation so your tailgate can drop fully without unhitching. It supports standard 3‑bolt and A‑frame jacks and accommodates square frames from 1.5″x3″ to 3″x5″. This makes it suitable for RVs, boat trailers, and cargo trailers. Best for: users prioritizing tailgate access. Limitation: Hardware is provided as a kit; actual jack is not included, and precise fit depends on your jack shape.
FUYEAR Heavy Steel Structure Mount Kit

FUYEAR’s kit emphasizes efficient adaptability with a multi‑hole adjustment system that precisely positions the jack on the trailer tongue. The frame plate design plus powder‑coated steel provides stronger load distribution and corrosion resistance. It’s suitable for trailers and RVs requiring stable support and predictable operation. Best for: those needing flexible positioning at multiple anchor points. Limitation: Installation involves multiple bolts and an extended assemblage; check for compatibility with existing jacks and frame dimensions.
MOUNTAIN_ARK A Frame Weld On Plate

The MOUNTAIN_ARK set provides a low‑cost approach with a 1/8″ thick, 2‑1/4″ OD compatible bottom plate. Sold as a 4‑pack, it’s designed for easy welding on to A‑frame jacks, delivering additional bottom‑side support. Best for: DIY installers seeking a straightforward, economical mounting option. Limitation: Requires welding or compatible mounting hardware; not a complete plug‑and‑play solution for all jacks.
Lewmar SWA Jack Plate Mounting Bracket

The Lewmar SWA plate is designed for flexibility, allowing mounting without motor removal and offering compatibility with Lewmar Axis and Vector anchors. Its symmetrical design supports versatile installation, making it suitable for mixed setups where motor access must be preserved. Best for: Lewmar system users or installations needing motor flexibility. Limitation: Specific compatibility with non‑Lewmar components should be validated before purchase.
Buying Guide
What should you consider when choosing a frame jack mounting plate?
- Jack type compatibility: Ensure the plate fits 3‑bolt or A‑frame jacks in your trailer setup.
- Mounting method: Decide between bolt‑on, side‑mount, or welded plates based on installation and maintenance needs.
- Tailgate clearance: If tailgate access is critical, prioritize plates that offer side mounting or tailgate clearance features.
- Material and finish: Powder‑coated steel resists rust, extending life in outdoor environments.
- Adjustment options: Multi‑hole designs provide precise positioning to optimize stability and load distribution.
- Ease of installation: Some kits include hardware; others require additional parts or professional installation.
What’s the best choice for heavy loads?
Choose products with robust steel construction and multiple mounting points, such as the Shimeyao or FUYEAR options, which emphasize durable support and adjustable positioning for heavy trailers.
Which option offers best tailgate clearance?
Demimy’s relocation kit focuses on tailgate clearance, enabling full access without unhitching, making it ideal for frequent loading and unloading.
How important is compatibility?
Always verify the jack type (A‑frame vs 3‑bolt) and frame dimensions (tube sizes and OD) match the mounting plate specifications to avoid installation issues.
Is welding required for some plates?
Yes. Some plates, like the MOUNTAIN_ARK set, are bottom plates intended for welding or permanent mounting, suitable for long‑term installations but not quick swaps.
Do these plates affect jack load distribution?
Yes. Proper mounting distributes load bearings across the frame and reduces vibrations, improving stability and reducing wear on the jack and mounting hardware.
FAQ
- Can these mounting plates be used with any trailer jack?
Yes, within compatible A‑frame or 3‑bolt designs; always confirm the exact fitment with product specs. - Will installing these plates void trailer warranties?
Some manufacturers may have specific guidelines; consult your trailer or jack warranty terms before modifying the mounting system. - Do these plates require professional installation?
It depends on the kit; bolt‑on solutions are simpler, while welded plates require welding or professional help. - Are there rust‑resistant options?
Powder‑coated steel options, like Shimeyao and FUYEAR, are designed to resist rust in outdoor environments. - What is tailgate clearance, and why does it matter?
Tailgate clearance refers to the space available for dropping the tailgate without interference; essential for easy loading. - Can I reuse existing hardware?
Some kits include hardware; others require different bolts or nuts—verify included parts and your current hardware before purchase.