The Jeep Cherokee XJ, a beloved classic, often finds itself the subject of serious off-road modifications. One of the most significant upgrades for improved articulation and handling is a long arm suspension kit. But what exactly is a long arm kit, and why would you want one for your XJ? This guide dives deep into everything you need to know.
What is a Jeep XJ Long Arm Suspension Kit?
A long arm suspension kit replaces the XJ's factory short control arms with significantly longer ones. These longer arms increase suspension travel and dramatically improve articulation—the ability of the wheels to maintain contact with the ground even on uneven terrain. This results in a smoother, more controlled ride, especially on challenging trails. The increased length reduces suspension geometry changes under load, improving handling and stability at higher speeds, both on and off-road.
Why Choose a Long Arm Kit for Your XJ?
The benefits of a long arm kit extend beyond just increased articulation. Here's a breakdown:
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Improved Articulation: The most significant advantage. Longer arms allow for a greater range of motion, keeping your tires planted even when climbing steep obstacles or traversing rough terrain.
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Increased Suspension Travel: This translates to a more comfortable ride on the road and significantly improved off-road capabilities. Larger bumps and dips are absorbed more effectively.
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Reduced Axle Wrap: Axle wrap is the twisting of the axle under acceleration or braking, reducing traction. Long arms help mitigate this by providing more stable suspension geometry.
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Enhanced Handling: The improved suspension geometry contributes to better stability and control, particularly at higher speeds, both on and off-road.
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Greater Ground Clearance: Though not the primary purpose, long arms can indirectly increase ground clearance, allowing you to tackle more challenging obstacles.
What are the Different Types of Jeep XJ Long Arm Kits?
Long arm kits aren't one-size-fits-all. Several factors differentiate them:
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Material: Kits are often constructed from steel or chromoly steel. Chromoly offers superior strength and lighter weight but typically commands a higher price.
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Arm Design: Different designs offer varying levels of strength and adjustability. Some are adjustable to fine-tune suspension geometry, while others are fixed length.
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Component Inclusion: Some kits include all necessary components (arms, brackets, bushings, etc.), while others may require additional parts to complete the installation.
How Much Does a Jeep XJ Long Arm Kit Cost?
The cost of a Jeep XJ long arm kit varies significantly based on brand, material, features, and complexity. Expect to pay anywhere from several hundred dollars for a basic kit to several thousand for high-end, fully adjustable setups.
What are the Disadvantages of a Long Arm Kit?
While long arm kits offer numerous advantages, there are some potential drawbacks to consider:
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Increased Complexity: Installation is more complex than a short arm lift, often requiring advanced mechanical skills or professional installation.
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Higher Cost: As mentioned, long arm kits are significantly more expensive than short arm lift kits.
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Potential for Increased NVH: (Noise, Vibration, and Harshness) – Depending on the quality of the kit and installation, you might experience an increase in NVH.
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Increased Unladen Ride Height: This can affect on-road handling and approach angles to some extent.
Is a Long Arm Kit Right for My Jeep XJ?
A long arm kit is a significant investment and undertaking. It's crucial to honestly assess your needs and capabilities before purchasing one. If you frequently tackle serious off-road trails and prioritize articulation and control, a long arm kit is an excellent upgrade. However, if you mainly use your XJ for mild off-roading or daily driving, a shorter-arm lift kit might be a more suitable and cost-effective option. Consider your budget, mechanical skills, and intended use before making a decision.
How Difficult is it to Install a Jeep XJ Long Arm Kit?
Installing a long arm kit is a complex undertaking. It requires extensive mechanical knowledge, specialized tools, and significant time commitment. Incorrect installation can lead to safety issues and poor performance, so professional installation is highly recommended, especially for those lacking the experience.
Do I Need Other Modifications with a Long Arm Kit?
Yes, often other modifications are recommended or required when installing a long arm kit. These might include:
- New shocks: Longer shocks are needed to accommodate the increased suspension travel.
- Brake lines: Extended brake lines might be necessary to prevent binding during suspension articulation.
- Steering components: Adjustments or replacement steering components may be needed for optimal steering geometry.
This guide offers a comprehensive overview of Jeep XJ long arm suspension kits. Remember to thoroughly research different brands and kits to find one that suits your specific needs and budget. Always prioritize safety and proper installation for optimal performance and longevity.
