The 2026 Harley-Davidson® CVO™ Road Glide® ST is designed as a performance-focused touring motorcycle equipped with a Milwaukee-Eight® 121 High Output engine, electronically assisted rider safety systems, adjustable suspension components, and integrated infotainment technology. The model combines long-distance touring functionality with chassis geometry and drivetrain calibration intended for responsive highway performance and stable cornering behavior. Its structure, braking systems, and electronic rider aids are engineered to support consistent operation across urban traffic conditions, extended highway travel, and loaded touring applications.
Milwaukee-Eight® 121 High Output Engine Configuration
The 2026 Harley-Davidson® CVO™ Road Glide® ST uses the Milwaukee-Eight® 121 High Output engine with a displacement of 121 cubic inches, or 1,977 cc. The engine uses a bore measurement of 4.075 inches and a stroke measurement of 4.6 inches. The compression ratio is rated at 11.4:1. The powertrain uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder. This configuration supports controlled airflow management and reduces the need for manual valve adjustment intervals.
Fuel delivery is managed through Electronic Sequential Port Fuel Injection. The system meters fuel according to throttle position and engine demand to maintain controlled combustion efficiency across different riding speeds. The engine also uses a pressurized dry-sump lubrication system designed to maintain oil circulation during acceleration, braking, and sustained highway operation.
The intake system includes a fiberglass washable air cleaner. Exhaust flow is managed through a 2-1-2 dual exhaust system with tapered mufflers. Engine output is rated at 127 horsepower at 4,900 rpm and 145 ft-lb of torque at 4,000 rpm. These figures contribute to strong acceleration characteristics and sustained passing performance during highway travel. Recommended fuel specification is 91 octane or higher.
Six-Speed Drivetrain and Power Transfer
The drivetrain configuration includes a chain primary drive with a 34/46 ratio and a belt final drive with a 30/68 ratio. Harley-Davidson® equips the motorcycle with a mechanically actuated 10-plate wet, Assist and Slip clutch. This clutch system is designed to reduce clutch lever effort while improving stability during aggressive downshifting and rapid deceleration.
The motorcycle uses a 6-Speed Cruise Drive® transmission calibrated for both low-speed maneuvering and extended highway riding. First gear ratio is 10.233, second gear ratio is 7.093, third gear ratio is 5.268, fourth gear ratio is 4.266, fifth gear ratio is 3.635, and sixth gear ratio is 3.067. The gear spacing allows the engine to maintain lower rpm levels at highway cruising speeds while preserving acceleration capability during throttle input changes.
Touring Dimensions and Structural Layout
The 2026 Harley-Davidson® CVO™ Road Glide® ST measures 94.9 inches in overall length, 36.4 inches in width, and 50.4 inches in height. The wheelbase measures 64 inches. Steering geometry includes a 26-degree rake angle and a 29.25-degree fork angle, combined with 6.7 inches of trail. These measurements contribute to directional stability during highway operation and controlled steering response through corners.
Seat height measures 27.5 inches in laden condition and 28.3 inches in unladen condition. Static ground clearance is rated at 5.1 inches. The motorcycle has a running order weight of 838 pounds and an as-shipped weight of 800 pounds. Gross Vehicle Weight Rating is 1,360 pounds.
Fuel capacity measures 6 gallons with a reserve warning capacity of 1 gallon. Luggage storage volume totals 2.42 cubic feet. This storage capacity supports long-distance riding applications and extended travel requirements without additional luggage systems.
Chassis Engineering and Suspension Components
The chassis uses a mild-steel tubular frame with a two-piece stamped and welded backbone. The frame incorporates cast and forged junctions, twin down-tubes, and a bolt-on rear frame with forged fender supports. Construction uses MIG welding throughout the frame assembly. The swingarm is also manufactured from mild steel and uses a two-piece drawn and welded section with forged junctions.
Front suspension consists of 47 mm inverted 1x1 front forks with adjustable preload, compression damping, and rebound damping. Rear suspension uses emulsion shocks with adjustable preload, compression damping, and rebound damping. Front suspension travel measures 4.6 inches, while rear suspension travel measures 3 inches.
Wheel Design and Tire Specifications
The motorcycle uses black 7-spoke cast aluminum wheels. The front wheel diameter measures 19 inches with a width of 3.5 inches. The rear wheel diameter measures 18 inches with a width of 5 inches.
Front tire specification is a Dunlop® Harley-Davidson® Series D408F in 130/60B19 configuration. Rear tire specification is a Dunlop® Harley-Davidson® Series D407T in 180/55B18 configuration. Both tires use bias blackwall construction.
Lean angle capability is rated at 31 degrees on both the right and left sides. These measurements are tested according to SAE J1168 standards.
Brake Hardware and Rider Safety Systems
The braking system includes dual radial-mounted four-piston fixed front calipers and a single axial-mounted rear caliper. Front braking uses dual floating wave-style rotors measuring 12.6 inches in diameter with a thickness of 0.18 inches. Rear braking uses a fixed rotor measuring 11.8 inches in diameter with a thickness of 0.28 inches.
Anti-lock Braking System technology is standard equipment. The motorcycle also includes Electronic Linked Braking, which distributes braking force between front and rear wheels during braking events. Traction Control System functionality assists in maintaining rear wheel traction during acceleration on changing surface conditions.
Additional systems include Drag-torque Slip Control System, Vehicle Hold Control, and Tire Pressure Monitoring System. Drag-torque Slip Control System manages rear wheel slip during aggressive downshifting. Vehicle Hold Control assists in maintaining stationary positioning on inclined surfaces. The Tire Pressure Monitoring System provides tire pressure status information through the integrated display interface.
Cornering-enhanced rider safety systems are also included. These systems include Cornering Enhanced Anti-lock Brake System, Cornering Enhanced Electronic Linked Braking, Cornering Enhanced Traction Control System, and Cornering Drag-Torque Slip Control System. These technologies use motorcycle lean-angle data to adjust braking and traction intervention during cornering operations.
Electrical Capacity and Lighting Systems
The electrical system uses a sealed maintenance-free 12-volt battery rated at 28 amp-hours and 405 cold-cranking amps. Charging is supported by a three-phase 58-amp system producing a maximum of 754 watts at 13 volts.
Starting is handled through a 1.6 kW electric starter system with solenoid shift starter motor engagement. The motorcycle uses LED lighting for the headlamp, tail, and stop lamps, front signal lights, and rear turn signals.
Digital gauges are integrated directly within the display system. The motorcycle also includes a 15-watt USB-C electric power accessory port positioned within the media storage compartment. This connection supports charging capability for compatible mobile devices and accessories.
Skyline™ OS and Infotainment Integration
The infotainment system operates through Skyline™ OS using a 12.3-inch full-color TFT display. Audio output is rated at 125 watts per channel. Audio is delivered through two 6.5-inch fairing-mounted speakers.
The system supports AM and FM radio operation along with USB-connected media playback capability. SD card, flash drive, and MP3 playback functions are supported through USB connectivity. Bluetooth® functionality supports hands-free mobile phone integration, media player connectivity, and headset communication compatibility.
Apple CarPlay® compatibility is available through both wireless and wired connections. USB-C and smartphone integration are positioned within the inner fairing storage compartment using compatible adapters.
The embedded navigation system includes traffic and weather functionality through Wi-Fi hotspot capability. Vehicle information displays include air temperature, oil pressure, and Engine Idle Temperature Management System information through the integrated interface.
Fuel Economy and Service Intervals
Estimated fuel economy is rated at 44 mpg under combined city and highway testing conditions. Oil capacity with filter measures 5 quarts. Transmission fluid capacity measures 1 quart, while primary chain case capacity measures 1.1 quarts. Coolant capacity measures 0.82 quarts.
The recommended service interval begins at 1,000 miles, followed by scheduled maintenance every 5,000 miles. Additional inspections for selected systems and components are required at 2,500-mile intervals according to owner maintenance guidelines.
Schedule a Test Ride at Harley-Davidson® of New Port Richey
Riders interested in evaluating the 2026 Harley-Davidson® CVO™ Road Glide® ST can schedule a test ride at Harley-Davidson® of New Port Richey near Homosassa, FL. A test ride allows riders to examine the Milwaukee-Eight® 121 High Output engine, the 6-Speed Cruise Drive® transmission, and the adjustable suspension system during active riding conditions. The integrated Skyline™ OS infotainment system, cornering rider safety technologies, and braking systems can also be experienced directly during operation. Riders can compare seating position, throttle response, braking feel, and touring ergonomics during highway and city riding environments. Scheduling a ride also provides an opportunity to review the motorcycle’s technical systems, rider interface controls, and touring-focused features in greater detail.
