The 2025 Harley-Davidson® Low Rider® ST is engineered as a performance-focused sport-touring motorcycle that combines high-output power, aerodynamic efficiency, and integrated electronic systems. This model continues the 2025 Harley-Davidson® Low Rider® ST platform with updated mechanical components, refined rider interfaces, and advanced safety technologies. Every system on this motorcycle is designed to support sustained highway travel, aggressive cornering, and consistent control across varying riding conditions. The design language reflects heritage influences, but the engineering and specifications clearly align with modern performance standards. This motorcycle is built for riders who prioritize measurable output, handling precision, and integrated technology over decorative elements.
Milwaukee-Eight® 117 High Output Powertrain Architecture
The 2025 Harley-Davidson® Low Rider® ST is powered by the Milwaukee-Eight® 117 High Output V-twin engine. This engine configuration delivers a stated output of 114 horsepower and 128 foot-pounds of torque. The displacement and tuning focus on strong mid-range and upper-range performance, allowing the motorcycle to maintain acceleration during extended throttle application. The redline has been increased to 5,900 rpm, an adjustment that allows for longer gear pulls and improved top-end operation compared to earlier calibrations.
A forward-facing Heavy Breather intake system supports the engine by increasing airflow efficiency. The intake length is tuned to improve cylinder charging, contributing to consistent torque delivery throughout the powerband. Airflow management within the intake system directly supports combustion stability during high-load riding conditions. The redesigned two-into-one exhaust system complements the intake by reducing exhaust restriction and improving exhaust scavenging. This exhaust layout also supports balanced saddlebag integration without interfering with performance output.
Fuel efficiency is rated at approximately 47 miles per gallon under standard operating conditions. This specification supports extended riding intervals while maintaining the engine’s performance characteristics. The balance between power output and fuel consumption reflects a tuning strategy focused on sustained operation rather than peak-only performance.
Transmission Behavior and Power Delivery Characteristics
Power from the Milwaukee-Eight® 117 High Output engine is transferred through a multi-speed transmission engineered for smooth engagement and predictable gear transitions. Gear ratios are selected to support both low-speed maneuvering and high-speed cruising. The extended redline allows riders to remain in higher gears longer, reducing the frequency of shifts during aggressive riding scenarios.
Throttle response is calibrated to align with selectable ride modes, allowing the rider to adjust power delivery characteristics based on riding conditions. This integration between mechanical output and electronic management ensures consistent behavior across varying surfaces and speeds. Engine braking behavior is further managed by electronic systems designed to reduce rear-wheel instability during downshifting.
Suspension Configuration and Chassis Geometry
The suspension system on the 2025 Harley-Davidson® Low Rider® ST is configured to support aggressive lean angles and stable high-speed operation. A tall rear monoshock raises the rear ride height, increasing cornering clearance and supporting improved weight transfer during acceleration. This configuration allows the motorcycle to maintain composure during hard corner exits and sustained lean.
The front suspension uses a 43 millimeter inverted fork that provides controlled damping and improved rigidity under braking loads. This design improves front-end feedback and reduces flex during high-speed cornering. The suspension calibration supports consistent tire contact across uneven surfaces, contributing to predictable handling behavior.
Chassis geometry is optimized for stability without sacrificing responsiveness. The combination of suspension travel, rake, and trail values supports straight-line confidence while maintaining agility in tighter riding environments. This balance is critical for a motorcycle designed to operate across both highway and performance-oriented routes.
Braking Performance and Control Systems
The braking system on the 2025 Harley-Davidson® Low Rider® ST uses dual front brake discs. This setup provides strong and consistent stopping force under a wide range of conditions. Brake feel is designed to remain linear during both progressive braking and rapid deceleration scenarios.
An integrated Anti-lock Brake System prevents wheel lock during hard braking. This system supports rider control during emergency stops and maintains directional stability. The braking system is further enhanced by cornering-sensitive functionality that adjusts brake pressure based on lean angle.
Cornering Enhanced Anti-lock Brake System technology modifies braking force when the motorcycle is leaned over. By accounting for lateral forces, the system helps maintain traction during braking while cornering. This functionality supports safer deceleration during complex riding situations.
Aerodynamic Fairing Engineering and Wind Management
The frame-mounted fairing on the 2025 Harley-Davidson® Low Rider® ST is inspired by historical FXRT designs but engineered using computational fluid dynamics. This approach allows precise shaping to manage airflow around the rider and motorcycle. The fairing reduces wind pressure on the rider’s upper body while minimizing turbulence at highway speeds.
Unlike fork-mounted fairings, the frame-mounted design does not interfere with steering input. This configuration preserves handling accuracy and reduces unwanted movement during crosswinds or rapid directional changes. The fairing structure contributes to both aerodynamic efficiency and long-distance riding stability.
Color-matched integration ensures the fairing remains cohesive with the motorcycle’s overall design while maintaining functional performance as its primary purpose. The fairing supports extended riding durations by reducing fatigue associated with wind resistance.
Lighting Systems and Visual Signaling
The lighting package on the 2025 Harley-Davidson® Low Rider® ST is fully LED-based. A 146 mm LED headlamp provides consistent illumination with improved visibility compared to traditional lighting systems. The beam pattern supports both urban riding and highway operation by maintaining clarity across varying speeds.
LED turn signals and a redesigned LED taillight improve visibility to other road users. Faster illumination response and higher brightness levels enhance signaling effectiveness. These lighting components contribute directly to rider awareness and traffic communication.
The durability of LED systems also supports long-term reliability under vibration and environmental exposure. Lighting performance remains stable across temperature variations and extended operating periods.
Rider Interface and Instrument Display Integration
The 2025 Harley-Davidson® Low Rider® ST features a 4-inch instrument display that combines analog and digital elements. An analog speedometer provides immediate speed reference, while the digital display below delivers multiple data points. Information displayed includes ride mode selection, gear position, tire pressure monitoring alerts, and system notifications.
The display layout prioritizes readability under varying lighting conditions. Screen brightness and contrast support visibility during both daytime and nighttime operation. Integrated system alerts ensure the rider remains informed of critical operating conditions without distraction.
Hand controls are redesigned to improve ergonomic access to key functions. Ride mode selection is integrated directly into the handlebar controls. The brake lever is adjustable, allowing riders to fine-tune lever position for comfort and control. A repositioned flash-to-pass switch improves accessibility during riding.
Ride Modes and Electronic Power Management
Three selectable ride modes allow riders to adjust throttle response and traction settings. Each mode modifies engine output behavior and electronic intervention thresholds. This system allows the motorcycle to adapt to different riding environments without mechanical changes.
Ride modes are integrated into the motorcycle’s electronic control architecture. Changes take effect immediately upon selection, allowing seamless transitions between riding conditions. This adaptability supports consistent performance across dry pavement, variable surfaces, and extended touring scenarios.
Electronic power management works in coordination with traction control and braking systems. This integration ensures that adjustments in one system align with the behavior of others, maintaining overall stability.
Rider Safety Enhancements and Stability Technologies
The 2025 Harley-Davidson® Low Rider® ST includes a comprehensive suite of Rider Safety Enhancements. The Traction Control System monitors rear-wheel behavior during acceleration and limits excessive wheel spin. This system supports controlled power application, particularly on low-traction surfaces.
The Drag-Torque Slip Control System manages rear-wheel behavior during deceleration. Abrupt downshifts or rapid throttle closure can induce rear-wheel slip, especially on wet surfaces. DSCS reduces this risk by modulating engine braking to maintain traction.
Cornering Enhanced Traction Control extends this functionality into leaned conditions. The system accounts for lean angle and lateral forces, adjusting intervention levels accordingly. Cornering Drag-Torque Slip Control applies similar logic during deceleration while leaned over.
A Tire Pressure Monitoring System continuously checks tire pressure and alerts the rider through the instrument display when levels deviate from recommended ranges. Proper tire pressure supports consistent handling, braking performance, and tire wear.
Seating, Ergonomics, and Functional Storage
The 2025 Harley-Davidson® Low Rider® ST uses a slim solo seat designed to provide rider support during acceleration and cornering. The seat profile maintains rider positioning without restricting movement. A laden seat height of 27 inches supports stable footing at stops while preserving an aggressive riding stance.
Lockable saddlebags provide approximately two cubic feet of storage capacity. The symmetrical design supports balanced weight distribution without affecting handling characteristics. Storage capacity is suitable for extended rides while maintaining the motorcycle’s performance-oriented profile.
USB-C charging capability is integrated into the cockpit area. This feature allows riders to power navigation devices, communication equipment, and other electronics during extended operation. The charging system supports modern riding requirements without adding complexity to the interface.
Visit Tower's Quad Cities Harley-Davidson® to Schedule a Test Ride
Riders interested in evaluating the technical performance of the 2025 Harley-Davidson® Low Rider® ST can schedule a test ride through Towers' Quad Cities Harley-Davidson® in Davenport, IA. A scheduled ride allows direct assessment of the Milwaukee-Eight® 117 High Output engine, suspension calibration, and electronic safety systems under controlled conditions. Experiencing the ride modes, braking behavior, and aerodynamic fairing performance provides practical insight into how these systems function together. Our dealership team can assist with ride scheduling and technical questions related to specifications and features. This approach allows riders to evaluate the motorcycle’s engineering and control systems in a focused and informative setting.
