RUBICON EXPRESS RE3721 Jl Control Arm 614901280050

( Brand: Rubicon Express ), ( Manufacturer Part Number: RE3721 ), ( Part Type: Control Arm ), ( Included Components: Components, Hardware, Instructions ), ( Fit Type: Vehicle Specific Fit ), ( Auto Part Orientation: Front ), ( Part Type Id: 18833 ), ( Color: Silver ), ( Exterior Finish: Polished ), ( Unit Count: 1.0 ), ( UPC: 614901280050 ), ( Package Dimensions Lxwxh: 28.0x7.0x4.2 Inches ), ( Weight: 16.95 Pounds )

Review RUBICON EXPRESS Jl Super flex Fixed Control Arm fits FLEX

The **Rubicon RE3721 JL Super-Flex Control Arm** is a high-performance, off-road engineered suspension component meticulously designed to elevate the handling, durability, and off-road capability of Jeep JL (2019 2023) models, including the Wrangler Unlimited and Rubicon variants. Crafted from premium **7075-T6 aluminum**, this control arm features a **super-flex design** that combines a reinforced, high-strength outer arm with a flexible inner section, allowing for superior articulation and reduced binding during extreme off-road maneuvers. The flexible section absorbs and dissipates stress, minimizing wear on bushings and joints while maintaining structural integrity, even under the most demanding conditions whether it s rock crawling, deep mud, or aggressive trail driving. The arm s **precision-machined geometry** ensures optimal camber and caster angles, enhancing stability and steering response, while the **integrated mounting points** simplify installation without compromising performance. Built to withstand the harshest environments, the RE3721 is backed by **Rubicon s reputation for reliability**, featuring **sealed bearings and reinforced bushings** that resist corrosion, fatigue, and premature failure. Whether tackling a technical trail or pushing the limits of an overlanding expedition, this control arm delivers the robustness and flexibility needed to keep your JL on its feet, ensuring a smoother, more controlled ride both on and off the pavement.

### **Pros and Cons of Buying a Rubicon RE3721 JL Super-Flex Control Arm**

#### **Pros**

1. **Superior Off-Road Performance** The Super-Flex control arm is designed for extreme off-roading, providing better articulation and suspension travel compared to stock or standard aftermarket arms. This allows for greater wheel clearance and improved ground clearance in rough terrain.

2. **Durability and Strength** Built with heavy-duty materials, including high-strength steel and reinforced bushings, these arms are engineered to withstand harsh conditions, reducing the risk of failure under heavy loads or extreme angles.

3. **Compatibility with JL Rubicon** Specifically designed for the Jeep Wrangler JL Rubicon, these arms integrate seamlessly with the vehicle s suspension system, ensuring proper alignment and functionality without requiring extensive modifications.

4. **Improved Wheel Travel** The flexible design allows for greater wheel movement, which is crucial for navigating deep ruts, rocks, and steep inclines without binding or damaging the suspension.

5. **Reduced Stress on Other Components** By distributing forces more evenly across the suspension, these arms can help reduce wear on other parts like the frame, bushings, and sway bar links.

6. **Easy Installation** While some off-road modifications require extensive labor, these arms are designed for relatively straightforward installation, though some basic mechanical skills may be required.

7. **Enhanced Resale Value** For enthusiasts who prioritize off-road capability, a JL Rubicon equipped with high-quality aftermarket suspension components like these arms can retain or even increase its value in the aftermarket.

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#### **Cons**

1. **Cost** High-quality off-road suspension components like the RE3721 Super-Flex arms are not cheap. Depending on the retailer and additional accessories (e.g., bushings, hardware), the total cost can range from **$300 to $600 per arm**, making a full set (both sides) a significant investment.

2. **Potential for Bushings to Wear Out** While the arms themselves are durable, the bushings (rubber or polyurethane) can degrade over time, especially in extreme conditions. Replacing bushings may require additional cost and labor.

3. **Compatibility with Heavy Loads or Lift Kits** If the vehicle is heavily loaded (e.g., with a large lift, heavy-duty tires, or a roof rack), the Super-Flex arms may still struggle with extreme articulation, potentially requiring additional reinforcement or alternative suspension components.

4. **Installation Complexity** While not overly difficult, installing these arms may require disassembling parts of the suspension, removing the wheel, and ensuring proper alignment. Those without mechanical experience may need professional help, adding to the cost.

5. **Potential for Binding in Extreme Angles** While designed for flexibility, some users report that in extreme off-road scenarios (e.g., deep sand, very steep climbs), the arms may still bind if the suspension is overloaded or misaligned.

6. **Limited Stock Availability** As with many high-end off-road parts, stock may occasionally be limited, leading to potential delays in ordering or higher prices due to demand.

7. **Not a Universal Fix for Suspension Issues** These arms improve articulation but do not address other potential suspension weaknesses, such as weak frame rails, worn-out shocks, or improperly aligned components. A full suspension upgrade may still be needed for optimal performance.

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### **Conclusion**

The **Rubicon RE3721 JL Super-Flex Control Arm** is one of the best aftermarket options for Jeep Wrangler JL Rubicon owners who demand maximum off-road capability. Its superior flexibility, durability, and compatibility make it a worthwhile investment for serious off-roaders. However, the high cost, potential bushing wear, and the need for careful installation must be considered.

If your primary goal is to **maximize articulation, ground clearance, and off-road performance** without compromising structural integrity, these arms are an excellent choice. For those on a tighter budget or with less extreme off-roading needs, a more budget-friendly alternative (e.g., standard aftermarket arms or stock upgrades) might suffice.

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### **Recommendation**

- You own a **JL Rubicon** and prioritize **extreme off-road performance**.

- You are willing to invest in **high-quality suspension components** for long-term durability.

- You plan to **run the vehicle in rugged terrain** where standard arms would fail.

- You have **basic mechanical skills** or access to a mechanic for installation.

- You are **budget-conscious** and can achieve similar results with less expensive arms (e.g., Fox or Bilstein options).

- Your off-roading is **mild to moderate**, and stock or standard aftermarket arms would suffice.

- You are unsure about **installation complexity** and lack the tools or expertise to complete the job properly.

For most **serious Rubicon off-roaders**, the **RE3721 Super-Flex arms are a strong recommendation** they significantly enhance capability and are built to last under heavy use. Pair them with a **proper lift kit, shocks, and bushings** for the best results.

Details:

Extended wheel travel: Experience improved travel with this control arm. Increased ground clearance: Gain extra clearance for off-Reading. Easy to install: System is designed for straightforward installation. Impressive off-road performance: Enhanced performance for adventures.

JL Super-Flex Fixed Control Arm RE3721: MORE BENEFITS: Shocks not included: This control arm does come with shocks.

part #: re3721 prices

• $173.47-$179.13

specifications steeringwheelsiiz:

• for models: Flex
• brand: Rubicon Express
• mpn: Re3721
• part type: Control Arm
• included components: Components, Hardware, Instructions
• fit type: Vehicle Specific Fit
• auto part orientation: Front
• part type id: 18833
• color: Silver
• exterior finish: Polished
• unit count: 1.0
• upc: 614901280050
• package dimensions lxwxh: 28.0x7.0x4.2 Inches
• weight: 16.95 Pounds

general steeringwheelsiiz:

• condition: New other see details
• Car Truck Parts Accessories > Interior Parts Accessories > Steering Wheels Horn Buttons

seller steeringwheelsiiz:

• rating: 99.3%
• city: Phoenix, AZ
• # reviews: 3613

returns steeringwheelsiiz:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

shipping steeringwheelsiiz:

• cost: $0.00
• transit: 4-10 Days
• service: Standard
• class: Standard
• type: Fixed

offer steeringwheelsiiz:

• options: Ship-to-home
• started: March 1, 2026
• quantity: 1
• availability: In Stock
• sold: 0

payments steeringwheelsiiz:

• wallet: Apple-pay
• other
• credit card: Diners-club