For U.S. motorcycle enthusiasts and DIY technicians, upgrading a classic Harley-Davidson with modern suspension technology can significantly enhance comfort and performance. LAS (Leading Air Suspension) offers a custom air ride system tailored for Harley-Davidson models, including Softails and other popular variants. This article provides a comprehensive overview of the LAS air suspension system, its design, installation process, technical features, and considerations for users seeking to install the system on their bikes.
Overview of the LAS Air Ride System
LAS air ride systems are engineered to provide on-the-fly adjustability and enhanced ride quality for Harley-Davidson motorcycles. These kits are designed for both pre-2000 and 2000-later Softail models, with options to fit a variety of Harley-Davidson models. The kits are composed of high-quality components manufactured in the United States, with the exception of the rubber air sleeve, which is sourced from Vibra Acoustics, formerly Gates.
One of the key design goals of the LAS system is ease of installation. The kit includes a frame-mount bracket for the pump, eliminating the need to remove the rear wheel for installation—a common requirement with other air suspension kits. This feature significantly reduces the time and labor involved in the installation process. Additionally, all wiring in the LAS kit is color-coded and designed for plug-and-play compatibility, minimizing the potential for wiring errors during installation.
Key Technical Features and Design Considerations
Adjustable Ride Height and Damping System
The LAS air ride system offers approximately 3 inches of adjustment in ride height, allowing users to customize the bike’s suspension to suit different road conditions and riding styles. This adjustability is particularly useful for riders who frequently switch between highway and city riding or who carry additional weight such as luggage or passengers.
The system’s suspension mechanism is a dual-component design that combines an air spring with a hydraulic oil/deflective disc damping system. The air spring is responsible for ride height and the initial absorption of road irregularities. The deflective disc damping system, on the other hand, is engineered to provide smooth and plush ride quality. This damping system is velocity sensitive, meaning it reacts differently to sharp, deep impacts versus repetitive bumps. This design ensures that the system can handle a wide range of terrain while maintaining a stable and comfortable ride.
Fail-Safe Mechanism and Compatibility
In the event of a system failure that results in a complete loss of air pressure, the LAS air ride system incorporates built-in stops that align with the stock bump stops on the original motorcycle. This feature prevents the tire from bottoming out into the fender, which could otherwise cause damage or instability. LAS explicitly notes that its kits are designed for use with stock tire and wheel sizes. If a rider is using larger wheels, there is a potential for tire rub when the suspension is fully aired out. Users are advised to verify compatibility with their specific wheel and tire setup before installation.
Customization and Aesthetic Options
LAS offers several customization options for riders who want to enhance the appearance of their air ride system. The standard kit includes black components, but riders can opt for chrome upgrades on the shocks, pump mount, and handlebar switch assembly for an additional cost. These aesthetic upgrades allow the system to better match the visual style of the motorcycle while maintaining the same high-performance features.
Installation Process and Setup
The installation of the LAS air ride system is outlined as a five-step process, designed to be straightforward and manageable for experienced DIY users or professional technicians. The key steps include mounting the pump, routing and connecting the wiring, installing the shocks, integrating the handlebar switch, and testing the system for proper operation. The frame-mount bracket for the pump is one of the most significant time-saving features, as it eliminates the need to remove the rear wheel.
The wiring system is designed with color-coded connectors and plug-and-play components, reducing the likelihood of installation errors. Once all components are mounted and connected, the system can be tested for proper inflation, damping, and response to user inputs.
Considerations for U.S. Users
Legal and Regional Requirements
While the primary source material does not provide specific legal requirements for U.S. installations, it does emphasize the importance of checking local regulations for road legality. Although this information is not explicitly provided for U.S. users in the available documentation, it is recommended to consult with local transport authorities or motorcycle regulatory bodies to ensure compliance with any applicable laws.
Compatibility and Safety
LAS recommends using the system with stock tire and wheel sizes to avoid potential issues such as tire rub or clearance problems when the suspension is fully aired out. Riders who have modified their bikes with larger wheels or tires should carefully assess compatibility before installation. Additionally, the fail-safe design of the system includes stops that prevent the tire from bottoming out in the event of a complete air loss, ensuring continued stability and safety.
Conclusion
The LAS air ride suspension system offers a reliable and customizable solution for Harley-Davidson riders seeking improved comfort and performance. The system’s design prioritizes ease of installation, adjustable ride height, and a dual-component damping system that enhances ride quality. With options for aesthetic customization and a focus on compatibility with stock components, the LAS system is a compelling choice for riders looking to upgrade their motorcycle’s suspension.
For users considering installation, the system is designed for straightforward setup, though attention should be paid to tire and wheel compatibility to avoid potential issues. Additionally, it is important to verify local regulations and ensure the system meets all legal requirements for road use in the United States.