When towing a dually or high-chassis pickup, extra vertical clearance and reliable jack support are essential. This guide highlights five top-rated camper jack extension products designed to add height, improve stability, and simplify leveling. Each option below is chosen for clear fitment, solid construction, and practical installation with common jacks. Read on to compare features, compatible sizes, and practical use cases to help you pick the right extension solution for your rig.
| Product | Brand | Key Benefit |
|---|---|---|
| HappiJac 6″ Truck Camper Jack Lift Extender Kit | HAPPIJAC | Adds 6″ vertical clearance; installs into existing jack foot |
| TOWKING Trailer Jack Drop Leg | TOWKING | Adjustable leg extension; 2″ ID jack tube compatibility |
| Kohree 6500lbs Heavy Duty RV Stabilizer Jacks 24″ Max Height | Kohree | 24″ height, robust steel, drill-ready option for fast setup |
| Trailer Jack Drop Leg (2″ ID) with Height Extension | Linone | 13″ height, up to 10″ extra with pin, corrosion-resistant |
| EZ Lite Truck Camper Corner Jacks Set of 4 | EZ Lite Campers | Set of four with mounting brackets and crank handle; 3500 lbs each |
The following sections detail each product, including what it adds to a dually setup, how it installs, and practical considerations when choosing extensions for your travel rig.
HappiJac 6″ Truck Camper Jack Lift Extender Kit
The HappiJac extenders provide an additional 6 inches of vertical clearance by mounting onto the existing jack foot. The kit includes four extenders and hardware, designed for easy installation without requiring major modifications. This solution is suitable for taller trucks or tight camping sites where ground clearance matters during jack extension and retraction. The extenders are built to work with standard jack feet, helping to reduce the risk of scraping or bottoming out on uneven terrain.
TOWKING Trailer Jack Drop Leg
The TOWKING drop leg offers adjustable height with a 2,000 lb capacity. It is compatible with 2″ inner diameter jack tubes and includes a footplate and mounting details. Before purchasing, measure your jack’s inner diameter to ensure a proper fit (the outer diameter is 1.75″). This extension helps you gain added height for leveling on uneven sites and can stabilize the rig when camping in marginal conditions.
Kohree 6500lbs Heavy Duty RV Stabilizer Jacks 24″ Kit
These Kohree stabilizer jacks are built from heavy-duty steel with electrophoresis coating for durability. They extend up to 24″ to provide ample height for leveling large RVs and travel trailers. The kit includes a hand crank and consideration for using a drill (not included) for faster operation. The straight-line gear design aids smooth vertical extension and retraction, supporting stable camping on uneven ground and enabling better alignment for dually setups.
Trailer Jack Drop Leg With Pin
The Linone drop leg offers compatibility with jacks that have a 2″ inner diameter, with a 13″ base height and 2″ hole spacing. It provides up to 10″ of extra height using a pin. Constructed from galvanized steel, it is designed to resist corrosion and provide a reliable extension option for campers requiring extra height for level loads and secure footing in variable terrain.
EZ Lite Truck Camper Corner Jacks Set Of 4
The EZ Lite Corner Jacks come as a four-pack with mounting brackets and crank handles. Each jack is rated up to 3,500 lbs, giving a combined stability and leveling support for motor homes and travel trailers. The set is particularly practical for four-point stabilization on longer campers, reducing rocking and improving weight distribution when parked on uneven ground.
Buying Guide: Key Purchase Considerations
- Weight capacity: Match the jack extension or stabilizer capacity to your RV’s weight and hitch setup. Higher-capacity extensions offer more stability on larger trailers and dually pickups.
- Height range: Consider how much extra height you truly need. Some extensions add a few inches, while others reach a full 24″ or more, which is critical for high-clearance sites or uneven terrain.
- Compatibility: Check inner and outer diameter measurements, especially for drop legs and jack feet. Ensure compatibility with your current jack model and mounting hardware.
- Construction material: Look for weather-resistant steel or galvanized components, plus protective coatings that resist rust and corrosion in coastal or humid environments.
- Ease of installation: Favor designs that install with existing hardware and require minimal tools. Some kits include hardware and simple instructions for quick upgrades.
- Warranty and support: A reliable warranty indicates confidence in durability, especially for frequent travelers and off-road campsites.
- Portability and storage: Consider how easy it is to store extensions when not in use and whether the added weight affects fuel economy or handling.
- Maintenance: Check whether moving parts require lubrication and how often to inspect pins, pins’ holes, and mounting brackets for wear.
- Safety considerations: Ensure extensions do not interfere with the operation of your awning, doors, or slide-outs. Proper installation is essential to prevent instability during towing and at rest.
- Use case diversity: If you drive a dually with tall ground clearance, prioritize higher-extension options and multi-point stabilization to balance the load across axles.