---
product_id: 414023796
title: "OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9\" Round Feet - 9\" and Smaller Feet Nest Securely Within Ridges"
brand: "ekon"
price: "€ 144.21"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ekon"
url: https://www.desertcart.nl/products/414023796-ox-blox-maxx-heavy-duty-trailer-jack-block-10-000
store_origin: NL
region: Netherlands
---

# Compact 10.5x10.5x4.5 inch size UV-resistant recycled plastic 10,000 lbs load capacity OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges

**Brand:** ekon
**Price:** € 144.21
**Availability:** ✅ In Stock

## Summary

> 🛻 Rock-solid RV stability that keeps you rolling with confidence!

## Quick Answers

- **What is this?** OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges by ekon
- **How much does it cost?** € 144.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/414023796-ox-blox-maxx-heavy-duty-trailer-jack-block-10-000)

## Best For

- ekon enthusiasts

## Why This Product

- Trusted ekon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heavy-Duty Strength:** Supports up to 10,000 lbs, engineered for the toughest RV and trailer setups.
- • **Unmatched Stability:** Corner ridges lock 9" round jack feet securely, eliminating wobble and movement.
- • **Compact & Convenient:** Low-profile 4.5" height fits easily under stabilizer jacks, saving space and hassle.
- • **Built to Last in the USA:** Patent-pending, UV-resistant design crafted from durable recycled plastic for long-term use.
- • **Perfect Fit for 5th Wheels:** Specifically designed for 9" and smaller round feet, ensuring a snug, secure nest every time.

## Overview

The OX BLOX MAXX Heavy Duty Trailer Jack Block is a premium, American-engineered stabilizer block designed to support up to 10,000 lbs. Its UV-resistant recycled plastic construction and patented corner ridge design securely nest 9" round jack feet, providing superior stability and durability in a compact 10.5x10.5x4.5 inch footprint. Ideal for 5th wheel RVs, it eliminates jack movement and enhances safety on every adventure.

## Description

desertcart.com: OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges : Automotive

Review: Indestructible - Best blocks ever. These will at last my RV for sure. Look good too!
Review: Awesome and a must have!! - My wife and I have a 43’ Sierra Luxury 5th wheel, our 2nd RV, but 1st 5th wheel. I researched best pads and such and have used all the normal stuff out there. I saw a video on YouTube where a person built blocks much like the size of these and I was set to do that. I priced everything out and was ready to go. My wife surprised me literally the day before with these just so I wouldn’t have to spend time going and gathering all I needed to build them, be in the summer heat of south Texas🥵, and miss a day on the lake with her. Well, to her, I say thank you. These are great! . They are durable and easy to place. Storing isn’t horrible, yes they take space but if you RV, you understand what your trading when you use a product like this. I have 4 of these & 2 red buckets (typically use for the front). I can switch around as needed and have. I 100% see the value in these and definitely recommend these!

## Features

- Ensure RV Stability: Eliminate most movement with the strongest RV stabilizer blocks available. The corner ridges keep the foot secure and stable. Unique design provides the most stability & strength.
- High Quality & Made in the USA: Patent-pending design by American engineers, these US-made heavy-duty jack blocks for travel trailer are made the old-fashioned way, UV-resistant and built to last.
- Perfect Fit: Suitable for 9" large round jack feet found on many 5th wheels & RVs. The shorter 4.25" height of the trailer blocks for jack makes them convenient for stabilizer jacks, compared to a bucket block.
- 10,000 lb-Capacity. The larger surface area of these camper jack blocks created by the web design on the bottom of the block is a more stable surface area than alternative blocks.
- Size: Made of UV-resistant recycled plastic, the recessed pad area of these camper blocks for jacks is 9.25" circle with a 5.25" gap between ridges. Each block is 10.5x10.5x4 and weighs 6.8 lbs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09TMZ6KLM |
| Best Sellers Rank | #143,043 in Automotive ( See Top 100 in Automotive ) #3 in RV Leveling Blocks |
| Brand | EKON |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (190) |
| Date First Available | February 28, 2022 |
| Item Weight | 6.4 pounds |
| Item dimensions L x W x H | 10.5 x 10.5 x 4.5 inches |
| Item model number | EKJS-MAXX |
| Load Capacity | 10000 pound |
| Manufacturer | EKON |
| Manufacturer Part Number | EKJS-MAXX |
| Maximum Lifting Height | 8 Inches |
| Product Dimensions | 10.5 x 10.5 x 4.5 inches |
| Style | Tongue Jack |
| UPC | 860007379710 |

## Product Details

- **Brand:** EKON
- **Load Capacity:** 10000 pound
- **Material:** Heavy Duty Recycled Plastic
- **Maximum Lifting Height:** 8 Inches
- **Vehicle Service Type:** Trailer

## Images

![OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges - Image 1](https://m.media-amazon.com/images/I/61RWERc-GUL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Indestructible
*by D***. on October 12, 2025*

Best blocks ever. These will at last my RV for sure. Look good too!

### ⭐⭐⭐⭐⭐ Awesome and a must have!!
*by M***E on August 4, 2023*

My wife and I have a 43’ Sierra Luxury 5th wheel, our 2nd RV, but 1st 5th wheel. I researched best pads and such and have used all the normal stuff out there. I saw a video on YouTube where a person built blocks much like the size of these and I was set to do that. I priced everything out and was ready to go. My wife surprised me literally the day before with these just so I wouldn’t have to spend time going and gathering all I needed to build them, be in the summer heat of south Texas🥵, and miss a day on the lake with her. Well, to her, I say thank you. These are great! . They are durable and easy to place. Storing isn’t horrible, yes they take space but if you RV, you understand what your trading when you use a product like this. I have 4 of these & 2 red buckets (typically use for the front). I can switch around as needed and have. I 100% see the value in these and definitely recommend these!

### ⭐⭐⭐⭐⭐ It’s a Beast
*by X***R on July 14, 2022*

Sure you can use stacked wood- but it cracks and splinters- not too mention it looks trashy. I tried a full set of yellow jack supports from a “Large Camping Store” they were not up to the job. They were too tall for stabilizer jacks and split dropping my tongue jack to the ground a waste of money. Enter OX BLOCK MAXX- They are stable, Criss cross reinforcement on the base will not break under tongue jack load. The height is perfect at 4.5 inches for stabilizers and interlocking stack of two for the tongue. The finger holes are a great touch. If you can get over the cost the function is top notch. One tip would be just buy these and skip the yellow ones that will save 150 bucks!

## Frequently Bought Together

- OX BLOX MAXX Heavy Duty Trailer Jack Block - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges
- EKON 4-Pack RV Jack Stabilizer Pads 12x12x0.75 - Slip-Resistant RV Jack Pads - Rubber Levelers for Campers and Trailers - Prevents Sinking and Aids in Stabilizing
- OX BLOX Ultra Trailer Jack Block - Universal RV Leveling Blocks - Durable & Stackable - For All Jack Types - 100% Recycled Plastic - Works For Class A Motorhomes

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**Shop now:** [https://www.desertcart.nl/products/414023796-ox-blox-maxx-heavy-duty-trailer-jack-block-10-000](https://www.desertcart.nl/products/414023796-ox-blox-maxx-heavy-duty-trailer-jack-block-10-000)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-14*