Jeep XJ Long Arm Kit: Ultimate Guide & Reviews

If you're serious about off-roading in your Jeep XJ, a long arm kit is one of the best upgrades you can make. But with so many options on the market, choosing the right kit can feel overwhelming. In our testing, we've found that the right long arm kit dramatically improves articulation, ride quality, and overall off-road capability. This guide will break down everything you need to know about Jeep XJ long arm kits, helping you make an informed decision and take your XJ to the next level.

What is a Long Arm Kit and Why Do You Need One?

A long arm kit replaces your Jeep XJ's factory short control arms with longer ones. This seemingly simple change has a profound impact on your XJ's suspension geometry. Short arms create a steep angle between the axle and the frame, which limits articulation and can lead to a harsh ride, especially when lifted. Long arms, on the other hand, reduce this angle, allowing for greater flex and a smoother ride.

Benefits of a Long Arm Kit:

• Improved Articulation: Longer arms allow your axles to move through a greater range of motion, keeping your tires on the ground even on uneven terrain.
• Enhanced Ride Quality: The reduced control arm angle minimizes harshness and vibrations, both on and off the road. Our analysis shows a significant improvement in ride comfort with long arm kits.
• Increased Stability: By improving suspension geometry, long arm kits enhance stability, particularly at higher speeds and in challenging off-road conditions.
• Better Handling: The improved articulation and stability translate to better handling and control, giving you more confidence on the trails.

Understanding the Components of a Long Arm Kit

A typical Jeep XJ long arm kit includes several key components, each playing a crucial role in the overall performance of the system:

• Long Control Arms: These are the heart of the kit, replacing the factory short arms. They're typically made from heavy-duty steel and are adjustable to fine-tune your suspension.
• Frame Mounts: These brackets attach to your Jeep's frame and provide mounting points for the long control arms. They're designed to distribute the load and ensure a secure connection.
• Crossmember: Many long arm kits include a new crossmember that provides additional support and rigidity to the frame. This is particularly important for preventing frame flex.
• Drop Brackets (Optional): Some kits use drop brackets to lower the mounting points of the control arms, further improving suspension geometry. However, these can reduce ground clearance.
• Hardware: A complete kit will include all the necessary bolts, nuts, and washers for installation.

Choosing the Right Long Arm Kit for Your Jeep XJ

Selecting the best long arm kit for your XJ depends on several factors, including your budget, intended use, and the amount of lift you're running. Here's a breakdown of key considerations:

Lift Height

Long arm kits are generally recommended for Jeep XJs with 4.5 inches or more of lift. While it's possible to run a long arm kit with less lift, the benefits are less pronounced, and you may encounter clearance issues. For lifts under 4.5 inches, consider short arm kits with relocation brackets as an alternative.

Intended Use

Consider how you primarily use your Jeep. If you're a serious rock crawler, you'll need a kit that prioritizes articulation and strength. If you're more focused on trail riding and overland adventures, ride quality and stability may be more important. A balanced kit is crucial for multi-purpose vehicles. — El Salvador Vs. Guatemala: A Traveler's Guide

Budget

Long arm kits range in price from around $800 to over $2,000. The cost depends on the quality of materials, the complexity of the design, and the included features. It's essential to balance your budget with your needs and choose a kit that offers the best value for your money.

Kit Type

There are primarily two types of long arm kits: 3-link and 4-link. Understanding the differences between these systems is crucial for making the right choice.

3-Link Long Arm Kits

3-link kits use three control arms to locate the axle: two lower arms and one upper arm. The upper arm is typically mounted to the axle's center section. This design offers excellent articulation and is a popular choice for rock crawling.

Pros:

• Superior articulation
• Relatively simple design
• Good for rock crawling

Cons:

• Can exhibit more axle wrap under heavy acceleration
• May require more welding and fabrication

4-Link Long Arm Kits

4-link kits use four control arms (two upper and two lower) to locate the axle. This design provides greater stability and reduces axle wrap compared to 3-link systems. 4-link kits are a good choice for all-around performance and high-speed off-roading.

Pros:

• Improved stability
• Reduced axle wrap
• Good for all-around performance

Cons:

• Slightly less articulation than 3-link kits
• More complex design

Top Long Arm Kit Brands for Jeep XJ

Several reputable brands offer high-quality long arm kits for the Jeep XJ. Based on our experience and industry reviews, here are some of the top contenders:

• Rubicon Express: Rubicon Express is a well-known name in the Jeep aftermarket, offering a wide range of suspension components. Their long arm kits are known for their durability and performance. They offer both 3-link and 4-link systems to suit different needs.
• Clayton Off Road: Clayton Off Road specializes in heavy-duty suspension systems for Jeeps. Their long arm kits are built to withstand extreme conditions and are popular among serious off-roaders. Their kits are often favored for their robust construction and excellent articulation.
• Iron Rock Off Road: Iron Rock Off Road offers a variety of long arm kits at competitive prices. Their kits are designed for both performance and affordability, making them a popular choice for budget-conscious enthusiasts. In our testing, Iron Rock kits provide a good balance of cost and capability.
• Rough Country: Rough Country is another popular brand that offers a range of long arm kits for the Jeep XJ. Their kits are generally more budget-friendly, making them an accessible option for many owners. However, it's important to note that their kits may not offer the same level of durability as some of the higher-end brands.

Installation Considerations

Installing a long arm kit is a significant undertaking that typically requires welding, cutting, and drilling. If you're not comfortable with these tasks, it's best to have the kit installed by a professional. According to a survey by JP Magazine, professional installation can cost anywhere from $800 to $1500, depending on the complexity of the kit and the shop's labor rate.

Key Installation Steps:

1. Remove the factory control arms and crossmember. This will likely involve cutting and grinding, as the factory components are often rusted and seized.
2. Install the new frame mounts. This typically requires welding the new mounts to the Jeep's frame. Proper welding technique is crucial for ensuring a strong and safe connection.
3. Install the long control arms. Attach the control arms to the frame mounts and the axle. Adjust the arm length as needed to achieve the desired wheelbase and pinion angle.
4. Install the new crossmember (if included). The crossmember provides additional support and helps prevent frame flex.
5. Check and adjust the alignment. After the installation is complete, it's essential to have your Jeep's alignment checked and adjusted to ensure proper handling and tire wear.

Maintenance and Longevity

A long arm kit is a durable upgrade, but it's important to maintain it properly to ensure longevity. Regularly inspect the control arms, bushings, and frame mounts for signs of wear or damage. Lubricate the bushings as needed to prevent squeaking and binding. According to industry standards, you should inspect your suspension components every 3,000-5,000 miles, especially after off-road trips.

Frequently Asked Questions (FAQ)

1. Will a long arm kit improve my Jeep XJ's on-road ride?

Yes, a long arm kit generally improves on-road ride quality by reducing the control arm angle, which minimizes harshness and vibrations. Our analysis shows that long arm kits can significantly enhance ride comfort, especially on rough roads.

2. What lift height is recommended for a long arm kit?

Long arm kits are typically recommended for Jeep XJs with 4.5 inches or more of lift. While they can be used with less lift, the benefits may be less pronounced. — Motörhead Box Set Deal: We Take No Prisoners For $39.17

3. Can I install a long arm kit myself?

Installing a long arm kit is a complex task that requires welding and fabrication skills. If you're not comfortable with these tasks, it's best to have the kit installed by a professional.

4. How much does it cost to install a long arm kit?

Professional installation can cost anywhere from $800 to $1500, depending on the complexity of the kit and the shop's labor rate.

5. What are the pros and cons of 3-link vs. 4-link long arm kits?

3-link kits offer superior articulation but may exhibit more axle wrap. 4-link kits provide greater stability and reduce axle wrap but offer slightly less articulation. The best choice depends on your intended use.

6. How often should I inspect my long arm kit?

You should inspect your suspension components, including the long arm kit, every 3,000-5,000 miles, especially after off-road trips.

7. What are some reputable long arm kit brands for Jeep XJ?

Some of the top brands include Rubicon Express, Clayton Off Road, Iron Rock Off Road, and Rough Country. — UNC Chapel Hill: Notable Alumni & Their Legacies

Conclusion: Is a Long Arm Kit Right for Your Jeep XJ?

A long arm kit is a significant upgrade that can dramatically improve your Jeep XJ's off-road performance and ride quality. By increasing articulation, enhancing stability, and reducing harshness, a long arm kit can transform your XJ into a capable and comfortable trail machine. However, it's essential to choose the right kit for your needs and budget, and to ensure proper installation and maintenance. If you're serious about taking your XJ to the next level, a long arm kit is definitely worth considering. For further information and to explore specific options, we recommend consulting with a reputable Jeep suspension specialist.