Description
When your trailer jack’s rack post gets bent, worn, or damaged from years of raising and lowering heavy trailers, you don’t need to replace the entire jack assembly. This replacement rack post with disc foot gets your Bulldog gearbox jack working like new again, so you can get back to moving equipment around the farm without fighting a stubborn or unreliable jack.
What You’re Getting
- 18-inch rack length with 23.5-inch overall post length for good lifting range
- Heavy-duty disc foot that spreads the load and won’t sink into soft ground
- Built to Bulldog’s specifications for reliable operation and long life
- Direct replacement for worn or damaged rack posts on gearbox mount jacks
Built for Real Farm Work
This rack post is designed for Bulldog’s popular gearbox crank trailer jacks—the ones you’ll find on grain trailers, equipment haulers, livestock trailers, and other heavy-duty farm implements. These jacks see plenty of action during planting and harvest seasons when you’re constantly hitching and unhitching trailers loaded with grain, feed, or equipment.
Made to Last
Farm trailers don’t get babied, and this rack post is built to handle the abuse that comes with real work. The steel construction stands up to the weight of loaded trailers and the constant cycling that happens when you’re moving equipment around the farm. The disc foot design distributes weight better than smaller feet, preventing it from punching through soft ground.
Installation Notes
You’ll need to remove the old rack post from your jack housing and install this replacement. It’s a straightforward job if you’re comfortable with basic mechanical work, but make sure to clean out any debris from the housing while you’ve got it apart. A little grease on the rack teeth helps everything operate smoothly.

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