The 2025 Harley-Davidson® Street Glide® Ultra is engineered as a dedicated two-up touring motorcycle designed to support extended-distance riding with integrated comfort systems, advanced rider assistance technologies, and a high-output V-twin powertrain. This model builds upon the established Street Glide® platform with structural, aerodynamic, and technological refinements intended to support consistent performance under passenger and cargo loads. Every major system on the motorcycle is developed to function cohesively during long-duration highway use, frequent speed transitions, and varying road conditions. The 2025 Harley-Davidson® Street Glide® Ultra is configured to deliver stable handling, predictable braking, and comprehensive onboard functionality without introducing unnecessary complexity for the rider.
Milwaukee-Eight® 117 Engine Output and Operating Characteristics
The 2025 Harley-Davidson® Street Glide® Ultra is powered by the Milwaukee-Eight® 117 V-twin engine, producing a rated 105 horsepower and 130 foot-pounds of torque. This engine configuration supports strong low- and mid-range torque delivery, which is essential for two-up touring and sustained highway operation. Power delivery remains linear across the usable rev range, supporting smooth acceleration during overtaking maneuvers and consistent output while riding at steady cruising speeds.
The engine is optimized to manage the additional mass associated with a passenger, full luggage capacity, and touring accessories. Throttle response is calibrated to provide controlled power application during low-speed operation while maintaining sufficient output for higher-speed travel. The engine also supports a fuel economy rating of 44 miles per gallon, allowing extended riding intervals between refueling stops.
Chassis Structure and Touring-Oriented Suspension Design
The 2025 Harley-Davidson® Street Glide® Ultra uses a touring chassis engineered to maintain rigidity and directional stability under load. Suspension components are selected to manage both rider comfort and vehicle control across extended distances. Rear suspension is handled by SHOWA® dual outboard emulsion technology shocks with three inches of travel. These shocks are designed to deliver consistent damping performance across varying road surfaces while supporting passenger weight and luggage mass.
A remote hydraulic preload adjustment system allows the rider to modify rear suspension settings manually to account for changes in load. This adjustment can be completed without tools, enabling efficient setup changes prior to departure or during multi-day travel. The suspension system supports balanced weight distribution and predictable handling characteristics during braking, cornering, and highway cruising.
Aerodynamic Fairing Development and Wind Management Systems
Aerodynamic performance on the 2025 Harley-Davidson® Street Glide® Ultra is enhanced through a redesigned Batwing fairing developed using computational fluid dynamics and wind tunnel testing. This fairing is paired with a clear windshield that extends four inches higher than those found on standard Street Glide® models. This configuration reduces helmet buffeting by up to 60 percent, improving rider and passenger comfort during sustained highway speeds.
Additional wind management components include fairing lowers with adjustable air vents, fork-mounted air deflectors, and a redesigned fairing skirt. The fork-mounted deflectors are larger than those used on standard Street Glide® models and allow riders to redirect airflow based on riding conditions. These systems work together to manage airflow around the rider’s torso and lower body, supporting consistent thermal comfort and reduced fatigue.
Seating Geometry and Two-Up Ergonomic Configuration
The 2025 Harley-Davidson® Street Glide® Ultra features a two-up touring seat designed for long-duration riding. The seat geometry rotates the rider’s hips forward, reducing pressure on the spine and supporting a neutral riding posture. This configuration supports extended riding sessions while maintaining consistent reach to the handlebars and foot controls.
Passenger accommodations are integrated into the seating and rear luggage configuration. The King Tour-Pak® luggage carrier includes a robust passenger backrest and integrated armrests. These components provide structural support for the passenger during acceleration, braking, and extended cruising. Heated hand grips are included as standard equipment to support cold-weather riding conditions and early morning departures.
Integrated Storage Architecture and Cargo Capacity
Storage capacity is significantly expanded on the 2025 Harley-Davidson® Street Glide® Ultra compared to standard Street Glide® models. The motorcycle provides a total of 4.9 cubic feet of combined storage through hard-shell saddlebags, fairing cubbies, and the King Tour-Pak® luggage carrier. This capacity allows riders to carry essential touring gear without external luggage systems.
The storage compartments are designed to maintain structural integrity and weather resistance during long-distance travel. Saddlebag guards are finished to match the motorcycle’s trim and provide additional protection to bodywork during low-speed tip-over events. These guards help preserve exterior components during stationary incidents or parking maneuvers.
Advanced Display Interface and Control Integration
The rider interface is centered around a 12.3-inch color TFT touchscreen display powered by Skyline™ OS. This display provides access to navigation, infotainment, ride mode selection, and vehicle status information through a single integrated interface. Screen clarity is maintained across varying lighting conditions, supporting visibility during daytime and nighttime riding.
The system includes hands-free voice recognition for navigation commands, allowing riders to input destinations using conversational prompts. Ride mode selection and system adjustments are accessible through the display, reducing the need for manual input while riding. The interface is designed to consolidate information delivery without overwhelming the rider during extended travel.
Ride Mode Configuration and Vehicle Hold Control
The 2025 Harley-Davidson® Street Glide® Ultra includes four selectable ride modes that adjust throttle response and system behavior based on riding conditions. These modes are designed to support controlled operation on wet surfaces, in urban environments, and during highway cruising. Ride modes integrate with braking and traction systems to maintain consistent vehicle response.
Vehicle Hold Control is included as standard equipment. This system allows the rider to maintain brake pressure when stopped on inclines or declines by squeezing and releasing the front brake lever. The system holds the motorcycle stationary until the rider applies throttle. This feature supports controlled starts when riding with a passenger or full cargo load.
Comprehensive Rider Safety Enhancement Systems
The 2025 Harley-Davidson® Street Glide® Ultra includes Harley-Davidson® Rider Safety Enhancements designed to assist during braking, acceleration, and deceleration events. Standard systems include Anti-lock Brake System, Electronic Linked Braking, and Traction Control System. These systems work together to support traction management during straight-line operation.
Cornering-enhanced systems expand safety coverage by accounting for motorcycle lean angle. The Cornering Anti-lock Brake System adjusts brake pressure during cornering to maintain wheel traction. Cornering Electronic Linked Braking modifies front and rear brake distribution during lean conditions. Cornering Traction Control and Cornering Drag-Torque Slip Control assist in managing rear-wheel behavior during acceleration and downshifting on low-traction surfaces.
A Tire Pressure Monitoring System continuously monitors tire inflation levels and provides alerts through the display interface. Maintaining proper tire pressure supports handling stability, braking performance, and tire longevity.
Touring-Specific Exterior Components and Finishing Details
Exterior components on the 2025 Harley-Davidson® Street Glide® Ultra are selected for durability and touring functionality. The fuel tank medallion is available in chrome or black finishes to match trim configurations and includes 2025 Harley-Davidson® Street Glide® Ultra identification. Trim options include Chrome and Black configurations paired with multiple color selections.
The fairing skirt is optimized to work with the fairing lowers to improve airflow consistency and visual integration. These components support both aerodynamic performance and structural continuity across the front of the motorcycle.
Schedule a Test Ride Today
Riders interested in evaluating the technical capabilities of the 2025 Harley-Davidson® Street Glide® Ultra can experience its performance, safety systems, and touring ergonomics firsthand by scheduling a test ride through Tower’s Baton Rouge Harley-Davidson® in Baton Rouge, LA. A test ride allows direct evaluation of the Milwaukee-Eight® 117 engine output, suspension response, and braking performance under typical riding conditions. Riders can also assess the effectiveness of the aerodynamic features and display interface during highway operation. Experiencing the integrated storage capacity and two-up seating configuration provides practical insight into the motorcycle’s touring focus. Scheduling a test ride offers an opportunity to evaluate how the 2025 Harley-Davidson® Street Glide® Ultra supports long-distance travel through its engineering and system integration.
