The 2026 Harley-Davidson® CVO™ Road Glide® ST is engineered as a performance-oriented touring motorcycle with clearly defined mechanical specifications and integrated rider systems. This model combines a high-displacement engine platform, a structurally reinforced chassis, and a fully integrated electronic suite to support consistent performance across varying riding conditions. Its configuration reflects a balance between measurable power output, controlled handling geometry, and modern infotainment capability.
The motorcycle measures 94.9 inches in length, 36.4 inches in width, and 50.4 inches in height. The seat height is 27.5 inches when laden and 28.3 inches when unladen, providing a stable rider position with manageable reach to the ground. Ground clearance is set at 5.1 inches, supporting predictable maneuverability over uneven surfaces. A wheelbase of 64 inches, combined with a 26-degree rake and 6.7 inches of trail, defines the steering geometry and contributes to directional stability.
High-Output Engine Configuration and Combustion Efficiency
The motorcycle is equipped with the Milwaukee-Eight® 121 High Output engine, designed to deliver consistent power across a wide operating range. This engine features a displacement of 121 cubic inches, equivalent to 1,977 cubic centimeters. The bore measures 4.075 inches, and the stroke measures 4.6 inches, establishing a configuration that supports both torque generation and sustained performance.
The compression ratio is 11.4 to 1, which enhances combustion efficiency and contributes to higher output levels. The engine produces 127 horsepower at 4,900 revolutions per minute and generates 145 foot-pounds of torque at 4,000 revolutions per minute. These figures indicate strong mid-range performance, allowing for responsive acceleration and stable cruising capability.
The valve system uses a pushrod-operated overhead configuration with hydraulic self-adjusting lifters and four valves per cylinder. This design reduces maintenance requirements and ensures consistent valve timing. Fuel delivery is managed through Electronic Sequential Port Fuel Injection, which provides precise fuel metering and efficient combustion. The lubrication system is a pressurized dry-sump configuration that maintains consistent oil circulation under varying operating conditions.
The intake system includes a washable fiberglass air cleaner, designed for durability and long service intervals. The exhaust system is a 2-1-2 dual layout with tapered mufflers, engineered to balance exhaust flow and maintain engine efficiency.
Transmission System and Power Delivery Mechanics
The drivetrain is configured to deliver power efficiently from the engine to the rear wheel while minimizing mechanical loss. The primary drive uses a chain with a 34 to 46 ratio, while the final drive uses a belt system with a 30 to 68 ratio. This combination supports durability and reduces routine maintenance compared to fully chain-driven systems.
The clutch is a mechanically actuated 10-plate wet system with assist and slip functionality. This feature reduces lever effort during operation and improves stability during downshifting by controlling engine-braking forces. The transmission is a 6-speed Cruise Drive® unit, designed to provide smooth gear transitions and optimized performance across a wide speed range.
Gear ratios are structured to deliver progressive power. First gear has an overall ratio of 10.233, enabling controlled low-speed movement. Second through fifth gears provide incremental transitions, while sixth gear, with a ratio of 3.067, supports efficient highway cruising with reduced engine strain. This configuration ensures that the engine operates within an optimal range across different riding conditions.
Structural Frame Design and Suspension Calibration
The chassis is constructed using a mild steel tubular frame with a two-piece stamped and welded backbone. The structure incorporates cast and forged junctions to enhance rigidity and durability. Twin downtubes provide additional strength and distribute mechanical loads effectively throughout the frame. The rear section is bolt-on and includes forged fender supports, allowing for structural integrity and serviceability.
The swingarm follows a similar construction method, using a welded mild steel design with forged junctions. This contributes to consistent rear-wheel alignment and improved handling stability under load.
The front suspension uses 47 mm inverted forks with adjustable preload, compression damping, and rebound damping. This allows riders to fine-tune suspension response based on riding conditions and personal preference. The rear suspension is an emulsion-type system with the same adjustability features, ensuring balanced performance between the front and rear.
Suspension travel is measured at 4.6 inches in the front and 3 inches in the rear. These values provide controlled absorption of road irregularities while maintaining consistent contact between the tires and the road surface. The overall suspension system is calibrated to support both comfort and handling precision.
Wheel Configuration and Braking Performance Systems
The motorcycle uses cast aluminum wheels with a 7-spoke design. The front wheel measures 19 inches in diameter and 3.5 inches in width, while the rear wheel measures 18 inches in diameter and 5 inches in width. This configuration supports stability and traction across different riding conditions.
The tires are Dunlop® Harley-Davidson® Series bias blackwall units. The front tire specification is 130 over 60B19, and the rear tire specification is 180 over 55B18. These dimensions contribute to balanced grip and predictable handling.
The braking system is designed for controlled deceleration and consistent performance. The front setup includes dual 12.6-inch wave-style floating rotors paired with 4-piston fixed radial-mounted calipers. The rear brake uses an 11.8-inch fixed rotor with a single axial-mounted caliper. This configuration ensures even braking force distribution and improved stopping capability.
The anti-lock Braking System is included as standard, preventing wheel lock-up during sudden braking events. The system maintains traction and allows the rider to retain steering control under braking conditions.
Integrated Electrical System and Lighting Components
The electrical system is designed to support all onboard systems with reliable power delivery. It uses a sealed, maintenance-free 12-volt battery with a capacity of 28 amp-hours and a rating of 405 cold cranking amps. This ensures consistent starting performance under varying conditions.
Charging is handled by a three-phase, 58-amp system capable of producing up to 754 watts of power. This output supports the motorcycle’s electronic systems, including lighting, infotainment, and navigation components.
The starting system uses a 1.6 kilowatt electric starter motor with solenoid engagement. This design ensures reliable engine ignition with minimal delay.
All lighting components use light-emitting diode technology. The headlamp, taillamp, and turn signals provide consistent illumination with reduced energy consumption. LED lighting also improves visibility and increases component lifespan.
A USB-C power outlet rated at 15 watts is integrated into the media storage compartment. This allows for device charging during operation without requiring additional accessories.
Digital Interface and Infotainment System Capabilities
The motorcycle features a Skyline™ OS infotainment system displayed on a 12.3-inch full-color TFT screen. This interface integrates vehicle data, navigation, and media functions into a single display unit. The screen is designed for clear visibility and intuitive operation.
Audio output is delivered through two 6.5-inch fairing-mounted speakers, each supported by a 125-watt-per-channel amplifier. This configuration ensures consistent audio clarity at varying speeds.
The system supports AM and FM radio, as well as media playback through USB connections. Bluetooth® connectivity enables hands-free mobile phone operation and wireless media streaming. Apple CarPlay® compatibility is available in both wired and wireless formats, allowing integration with compatible devices.
Navigation functionality is embedded within the system and includes traffic and weather data through a Wi-Fi connection. The display also provides vehicle information such as air temperature and oil pressure, ensuring that the rider has access to critical operational data.
Advanced Rider Safety and Control Technologies
The motorcycle incorporates a range of electronic rider assistance systems designed to improve control and stability. The anti-lock braking system is complemented by Electronic Linked Braking, which distributes braking force between the front and rear wheels.
The Traction Control System regulates wheel slip during acceleration, maintaining grip on varying surfaces. The drag-torque slip control system manages engine braking during deceleration, reducing rear-wheel instability. Vehicle Hold Control assists during stops on inclines by maintaining brake pressure.
The Tire Pressure Monitoring System provides continuous feedback on tire pressure levels, allowing for timely adjustments. These systems operate together to enhance overall control.
Cornering enhancements include a cornering Anti-lock Braking System, cornering Electronic Linked Braking, cornering Traction Control System, and cornering Drag-Torque Slip Control System. These features adjust performance parameters based on lean angle, supporting stability during turning maneuvers.
Fuel Capacity and Efficiency Metrics
The fuel system is designed for extended riding capability. The fuel tank has a capacity of 6 gallons, with a reserve capacity of 1 gallon indicated by a warning light. This allows riders to monitor fuel levels accurately and plan refueling intervals.
Fuel economy is estimated at 44 miles per gallon under combined city and highway conditions. This efficiency supports longer travel distances and reduces the frequency of refueling stops. Oil capacity with filter is 5 quarts, while the transmission and primary chain case capacities are 1 quart and 1.1 quarts, respectively. Coolant capacity is 0.82 quarts, supporting consistent thermal management.
Visit Tampa Bay Harley-Davidson® within Tampa, FL
Riders interested in evaluating the 2026 Harley-Davidson® CVO™ Road Glide® ST can schedule a test ride through Tampa Bay Harley-Davidson® within Tampa, FL. This opportunity allows direct assessment of engine output, suspension response, and braking performance under controlled conditions. Experiencing the motorcycle in motion provides a clearer understanding of its drivetrain behavior and handling characteristics. The integrated technology systems can also be reviewed during operation, including the infotainment interface and rider safety features. Contact our team to arrange a test ride and examine how the specifications translate into on-road performance.
