The 2026 Harley-Davidson® CVO™ Street Glide® ST is a performance-focused touring motorcycle engineered with a high-output Milwaukee-Eight® powertrain, advanced rider-assistance systems, adjustable suspension components, and integrated infotainment technology. The model combines touring dimensions with performance-oriented chassis geometry and electronic systems designed for long-distance riding and high-speed stability. It uses a Milwaukee-Eight® 121 High Output engine paired with a 6-Speed Cruise Drive® transmission and multiple electronic control systems that manage braking, traction, and rider support functions. The motorcycle also incorporates integrated navigation, Bluetooth® connectivity, Apple CarPlay® compatibility, and a large TFT display interface. Every component on the 2026 Harley-Davidson® CVO™ Street Glide® ST is configured to support performance touring operation through mechanical durability, rider information access, and chassis control.
Milwaukee-Eight® 121 High Output Engine Configuration
The 2026 Harley-Davidson® CVO™ Street Glide® ST is equipped with the Milwaukee-Eight® 121 High Output engine. This engine has a displacement of 121 cubic inches, equivalent to 1,977 cc. The bore measures 4.075 inches, and the stroke measures 4.625 inches. The engine uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder. This valve configuration supports airflow efficiency and consistent valve operation under varying riding conditions.
The compression ratio is rated at 11.4:1. Fuel delivery is controlled through Electronic Sequential Port Fuel Injection. The engine also uses a fiberglass washable air cleaner and a pressurized dry-sump lubrication system. Exhaust routing is handled through a 2-1-2 dual exhaust system with tapered mufflers. These components support combustion efficiency, cooling stability, and sustained engine operation during extended riding periods.
Performance figures listed for the model include 145 ft-lb of torque at 4,000 rpm and 127 horsepower at 4,900 rpm. Torque testing follows the J1349 testing method. The engine is configured for strong low-end and mid-range output, supporting acceleration during highway merging, passing, and loaded touring operation. Harley-Davidson® recommends 91-octane or higher fuel for this engine configuration.
Six-Speed Transmission and Drivetrain Operation
Power is transferred through a 6-Speed Cruise Drive® transmission. The drivetrain uses a chain primary drive with a 34/46 ratio and a belt final drive with a 30/68 ratio. This arrangement combines mechanical durability with reduced drivetrain maintenance requirements associated with belt-driven touring motorcycles.
The clutch system uses a mechanically actuated 10-plate wet Assist and Slip clutch. The Assist and Slip configuration supports smoother clutch engagement and reduced rear wheel instability during aggressive downshifting. Gear ratios are engineered to balance acceleration performance with highway cruising efficiency.
The overall gear ratios are 10.233 in first gear, 7.093 in second gear, 5.268 in third gear, 4.266 in fourth gear, 3.635 in fifth gear, and 3.067 in sixth gear. These ratios support gradual power delivery through lower gears while maintaining reduced engine rpm during highway travel in sixth gear.
Touring Chassis and Structural Engineering
The frame uses a mild steel tubular structure with a two-piece stamped and welded backbone. The frame also incorporates cast and forged junctions, twin down-tubes, and a bolt-on rear frame with forged fender supports. Harley-Davidson® uses MIG welding throughout the frame assembly.
The swingarm also uses mild steel construction with a two-piece drawn and welded section combined with forged junctions and MIG welding. This chassis configuration is designed to support touring stability while maintaining structural rigidity under load.
The motorcycle has a wheelbase of 64 inches. Steering geometry includes a 26-degree rake angle and a 29.25-degree fork angle. Trail measurement is listed at 6.7 inches. These specifications contribute to directional stability and controlled steering response during high-speed touring operation.
Overall motorcycle dimensions include a length of 94.9 inches, a width of 38.6 inches, and a height of 52.4 inches. Laden seat height is 27.5 inches, while unladen seat height measures 29.1 inches. Static ground clearance is listed at 5.3 inches. Lean angle capability measures 31 degrees on both the right and left sides using SAE J1168 testing standards.
Adjustable Suspension and Ride Control
The front suspension system uses 47 mm inverted 1x1 front forks with adjustable preload, compression damping, and rebound damping. This suspension design allows riders to modify front-end response based on load conditions and riding preferences. The inverted fork configuration also contributes to front-end rigidity and steering precision.
Rear suspension components use emulsion shocks with adjustable preload, compression damping, and rebound damping. Suspension travel measures 4.6 inches in the front and 3 inches in the rear. These suspension specifications support load management, cornering stability, and touring comfort across varying road surfaces.
Cast Aluminum Wheels and Tire Specifications
The 2026 Harley-Davidson® CVO™ Street Glide® ST uses black 7-spoke cast aluminum wheels. The front wheel measures 19 inches in diameter and 3.5 inches in width. The rear wheel measures 18 inches in diameter and 5 inches in width. These wheel dimensions support the motorcycle’s touring stability and cornering performance.
Tire specifications include Dunlop® Harley-Davidson® Series bias blackwall tires at both ends. The front tire uses a D408F specification sized at 130/60B19 M/C 61H. The rear tire uses a D407T specification sized at 180/55B18 M/C 80H. Tire sizing contributes to traction consistency, steering response, and highway stability during loaded touring operation.
High-Performance Braking Architecture
The braking system uses dual radial-mounted 4-piston fixed front calipers and a single axial-mounted rear caliper. Front braking components use dual floating Wave Style rotors, while the rear uses a fixed rotor configuration.
Front brake rotors measure 12.6 inches in diameter with a thickness of 0.18 inches. The rear brake rotor measures 11.8 inches in diameter with a thickness of 0.28 inches. Dual front brake rotors are standard equipment.
Anti-lock Braking System functionality is included as standard equipment. The braking system also incorporates Electronic Linked Braking technology, which electronically distributes braking force between front and rear braking components. These systems are integrated to support braking consistency during varying riding and road conditions.
Advanced Rider Safety Technologies
The 2026 Harley-Davidson® CVO™ Street Glide® ST includes multiple electronic rider-assistance systems. Standard rider safety technologies include the Traction Control System, the Drag-torque Slip Control System, the Vehicle Hold Control, and the Tire Pressure Monitoring System.
The motorcycle also includes cornering-enhanced rider safety technologies. 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 systems use vehicle inputs and lean-angle data to support rider control during cornering operations.
Vehicle Hold Control assists riders during stopped uphill situations by maintaining brake pressure temporarily after brake release. Tire Pressure Monitoring System functionality allows riders to monitor tire pressure conditions directly through the motorcycle interface.
Integrated Electrical and Lighting Systems
The electrical system uses a sealed maintenance-free 12-volt battery rated at 28 amp-hours with 405 cold cranking amps. Charging is managed through a three-phase 58-amp system capable of producing a maximum of 754 watts at 13 volts.
The engine starts using a 1.6 kW electric starter with solenoid shift starter motor engagement. The motorcycle uses LED lighting throughout the primary lighting system. This includes LED headlamp, LED tail and stop lighting, LED front signal lights, and LED rear turn signals.
Digital gauges are integrated directly within the infotainment display. The electrical system also includes a 15-watt USB-C accessory power outlet located in the media storage compartment. This configuration supports smartphone charging and accessory power requirements during extended travel.
Skyline™ OS Infotainment Interface
The motorcycle uses the Skyline™ OS infotainment system integrated into a 12.3-inch full-color TFT display. The display combines navigation, vehicle information, audio controls, and communication functions into a centralized rider interface.
Audio output includes two 6.5-inch fairing-mounted speakers with 125 watts per channel. Standard radio functionality includes AM and FM support. USB-connected SD cards, flash drives, and MP3 playback are also supported through the infotainment system.
Bluetooth® functionality supports hands-free mobile phone operation, media playback, and headset connectivity. Rider and passenger intercom capability is available through Harley-Davidson® headset systems. Voice-operated communication support is available for compatible H-D headsets.
The infotainment system also supports Apple CarPlay® through wired or wireless connection methods. Smartphone integration is supported through USB-C and MTP-compatible connections within the inner fairing storage area.
Navigation and Vehicle Information Systems
Embedded navigation is included as standard equipment on the 2026 Harley-Davidson® CVO™ Street Glide® ST. The navigation system supports traffic and weather updates through Wi-Fi hotspot connectivity with subscription support in applicable regions.
The vehicle information screen displays operational data, including air temperature, oil pressure, and EITMS information. The TFT display centralizes motorcycle operating information and infotainment functions into a single rider interface designed for touring operation.
The motorcycle does not include reverse functionality or auxiliary lamps. Rider interface systems focus on navigation access, communication support, and integrated vehicle information management through the Skyline™ OS system.
Fuel Capacity and Operational Specifications
Fuel capacity measures 6 gallons with a 1-gallon reserve fuel warning threshold integrated into the fuel injection system. Estimated fuel economy is listed at 44 mpg under estimated city and highway testing conditions.
Oil capacity with filter is rated at 5 quarts. Transmission capacity measures 1 quart, while the primary chain case capacity is listed at 1.1 quarts. Coolant capacity measures 0.82 quarts.
The motorcycle weighs 782 pounds in shipped condition and 816 pounds in running order. Gross Vehicle Weight Rating is listed at 1,360 pounds. Gross axle weight ratings are 500 pounds at the front and 927 pounds at the rear. Luggage volume capacity measures 2.42 cubic feet for touring storage functionality.
Schedule a Test Ride Today
Riders interested in examining the technical systems and performance components of the 2026 Harley-Davidson® CVO™ Street Glide® ST can schedule a test ride with Harley-Davidson® of Wesley Chapel near Zephyrhills, FL. A test ride provides an opportunity to evaluate the Milwaukee-Eight® 121 High Output engine, 6-Speed Cruise Drive® transmission, adjustable suspension system, and integrated braking technologies during operation. Riders can also review the Skyline™ OS infotainment system, navigation interface, Bluetooth® connectivity, and TFT display layout directly from the rider position. The motorcycle’s touring dimensions, seating position, chassis balance, and rider-assistance systems can be assessed under controlled riding conditions. Our dealership can also provide additional information regarding the motorcycle’s specifications, operational systems, and integrated technology features.
