For trailer owners seeking improved ride quality and reduced maintenance, the Dexter E-Z Flex suspension system has emerged as a popular upgrade. Designed to dampen road vibrations and enhance the longevity of trailer suspension components, the E-Z Flex system offers a balance of performance and ease of use. This article explores the installation process, technical specifications, and practical considerations based on user experiences and manufacturer documentation. It is intended for U.S. consumers, DIY enthusiasts, and trailer owners who are considering or have undertaken the Dexter E-Z Flex upgrade.
Installation Overview and Preparation
The Dexter E-Z Flex system is typically installed as part of a broader suspension overhaul. According to one user who completed the installation, the process involves replacing standard equalizer components with the E-Z Flex unit and upgrading to heavy-duty shackle links and lubricated bronze bushings. These additional components are not mandatory but are strongly recommended to improve long-term durability and performance.
Prior to installation, it is important to ensure that the trailer’s axle spacing matches the specifications of the E-Z Flex kit. The user reported purchasing the Dexter E-Z Flex Suspension Kit (K71-652-00), which is designed for 33-inch nominal axle spacing and up to 6,000 lb axles. However, the documentation highlights that the actual distance between axles may vary slightly due to spring length, with the user’s specific setup measuring 32 inches. This discrepancy underscores the importance of verifying the exact dimensions of the trailer’s suspension system before purchasing the appropriate kit.
Installation should only be attempted by individuals with the necessary mechanical skills and tools, as the process involves working with torque specifications and precision assembly. Safety is paramount, particularly when handling heavy components and applying torque to nuts and bolts. The user emphasized that the installation is somewhat involved and should not be undertaken without confidence in one’s ability to perform it correctly.
Key Components and Assembly Steps
The installation process begins with the replacement of standard spring bushings and shackle links with the upgraded bronze bushings and heavy-duty shackle links. These components contribute to the overall rigidity and longevity of the suspension system. The user reported using a C-clamp to assist with the installation of shackle links, particularly when dealing with tight or loose fits.
Next, the E-Z Flex equalizer is installed, which involves inserting the central bolt and securing it with a swedged nut. The swedged nut has impressions on one end, and the user noted that it should be installed with the swedged end facing outward to avoid resistance during tightening. Proper lubrication is also critical during this step, with the user applying grease to the pin and the inside diameter (ID) of the equalizer. Both grease and Never-Seize were considered acceptable options, though the user preferred grease for its proven effectiveness in preventing rust.
Once the E-Z Flex is in place, the shackle links are inserted and torqued to the manufacturer’s specifications. The user reported applying 50 ft-lb of torque to the spring and shackle pins, and 75 ft-lb to the central E-Z Flex bolt. It is important to use a wrench to hold the head of the pin in place during torque application to prevent stripping the serrations, which could compromise the integrity of the connection.
After all components are installed and torqued, the user performed a final inspection to ensure that all nuts and bolts were secure and that the system functioned smoothly. A close-up of the completed installation was shared, showing the E-Z Flex in place and ready for use.
Performance and Design Advantages
The Dexter E-Z Flex system is designed to provide superior ride quality by reducing the transfer of road shock to the trailer frame and its contents. According to manufacturer documentation, the E-Z Flex system includes a scientifically formulated rubber insert that absorbs vibrations and equalizes the suspension over uneven terrain. This design feature helps isolate the trailer from damaging road shocks, resulting in a smoother and more protected ride.
One of the key advantages of the E-Z Flex system is its ability to pivot and compress continuously during travel. This dynamic movement allows the system to adapt to changing road conditions, ensuring that the trailer remains stable and well-balanced. The documentation states that the E-Z Flex system outperforms standard equalizers by up to 80% in terms of reducing acceleration forces on the trailer frame. Additionally, it performs significantly better than competing systems in controlled road tests, further reinforcing its reputation for reliability and effectiveness.
The E-Z Flex system is available in retrofit kits for existing trailers, as well as in factory-installed configurations for new trailers. This flexibility allows users to upgrade their existing suspension systems without the need for a complete overhaul. The system is also designed to maintain the ride height of the trailer, which is an important consideration for users who are concerned about changes in ground clearance or alignment.
Practical Considerations and User Experiences
From a practical standpoint, the E-Z Flex system requires minimal maintenance compared to traditional suspension systems. The use of lubricated bronze bushings and greaseable pins helps reduce wear and tear, extending the lifespan of the components. Additionally, the rubber insert is designed to resist degradation from normal use, though the user noted a concern about potential exposure to sunlight. To address this, the user plans to apply 303 Protectant to the rubber and may create a thin plastic sleeve or use high-grade electrical tape for added protection.
One user who installed the E-Z Flex system on a T310SR camper with Al-Ko axles reported that the system raised the camper by approximately 1/8 inch when loaded. While this change is relatively minor, it can affect the overall alignment and performance of the trailer, particularly if the suspension bushings are not properly maintained. The user emphasized the importance of rebuilding the spring bushings as part of the upgrade process to ensure accurate axle alignment and optimal performance.
Another user tested the E-Z Flex system on a 2004 T2499 camper with Dexter running gear and found that the system was a perfect match. This indicates that the E-Z Flex system is compatible with a range of trailer models and axle configurations, provided that the correct kit is selected based on the trailer’s specifications.
Cost and Availability
The cost of the Dexter E-Z Flex system varies depending on the retailer and the specific configuration. One user reported purchasing the E-Z Flex Suspension Kit from Trailer Parts Super Store for $241.95, plus shipping. The same kit is available directly from the Dexter website at a slightly lower price, though the user noted that the website was temporarily unavailable at the time of purchase. Other components, such as the heavy-duty shackle and wet bolt kit, are also available through Dexter or authorized retailers and are highly recommended for long-term durability.
The availability of the E-Z Flex system as a retrofit kit makes it accessible to a wide range of trailer owners, regardless of whether their trailers were originally equipped with Dexter or other brands of suspension components. The user who installed the system on an Al-Ko-equipped trailer noted that, while the E-Z Flex was not an exact match for the original equalizer, the shackles and other components compensated for the differences, resulting in a functional and effective upgrade.
Conclusion
The Dexter E-Z Flex suspension system offers a compelling upgrade for trailer owners seeking improved ride quality, reduced maintenance, and enhanced durability. Through a combination of scientifically formulated rubber inserts, lubricated bronze bushings, and heavy-duty shackle links, the system effectively dampens road vibrations and isolates the trailer from damaging shocks. The installation process, while somewhat involved, is well-documented and can be completed with the right tools and mechanical knowledge.
User experiences and manufacturer documentation both highlight the system’s ability to outperform standard equalizers, with reported reductions in acceleration forces and smoother ride characteristics. The availability of retrofit kits and the system’s compatibility with a variety of trailer models further enhance its appeal to a broad audience of trailer owners.
For those considering the E-Z Flex upgrade, it is important to verify the trailer’s axle spacing and suspension configuration to ensure compatibility with the selected kit. Additionally, the use of recommended accessories such as heavy-duty shackles and lubricated bushings can further extend the system’s lifespan and improve overall performance. With proper installation and maintenance, the Dexter E-Z Flex system can provide years of reliable service and a more comfortable towing experience.