The 2026 Harley-Davidson® CVO™ Street Glide® ST is a touring motorcycle designed with a high-output V-twin engine, advanced rider assistance systems, electronically integrated controls, and performance-focused chassis components. The model combines touring functionality with upgraded suspension hardware, braking technology, and integrated infotainment systems. Its engineering configuration supports long-distance riding, highway stability, rider information access, and controlled handling characteristics. The motorcycle also incorporates several cornering-enhanced safety systems and electronically managed rider support technologies designed to improve braking and traction management during operation.
Milwaukee-Eight® 121 High Output Engine Configuration
The 2026 Harley-Davidson® CVO™ Street Glide® ST uses the Milwaukee-Eight® 121 High Output engine. The engine displacement measures 121 cubic inches, or 1,977 cc. Bore and stroke dimensions are listed at 4.075 inches and 4.625 inches, respectively. The engine uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and four valves per cylinder.
The compression ratio is rated at 11.4:1. Fuel delivery is managed through Electronic Sequential Port Fuel Injection. The intake system includes a washable fiberglass air cleaner designed for reusable service intervals. Exhaust routing uses a 2-1-2 dual exhaust system fitted with tapered mufflers.
The lubrication system operates as a pressurized dry-sump configuration. This system separates oil storage from the crankcase to support lubrication control during extended operation and varying riding conditions. Engine output is rated at 145 ft-lb of torque at 4,000 rpm and 127 horsepower at 4,900 rpm. These performance figures place the motorcycle within the high-output touring category and support acceleration performance during highway merging, passing maneuvers, and loaded touring operation.
The engine torque testing method follows J1349 standards. Recommended fuel specification is 91 octane or higher.
Six-Speed Cruise Drive® Transmission System
The drivetrain configuration combines a chain-driven primary system with a belt-driven final drive. The primary drive uses a 34/46 ratio, while the final drive uses a 30/68 ratio. Power transfer is managed through a 6-Speed Cruise Drive® transmission.
The clutch system uses a mechanically actuated 10-plate wet clutch with Assist and Slip functionality. This design supports smoother clutch engagement and controlled rear-wheel behavior during aggressive downshifting. The wet clutch arrangement also assists with heat management during operation.
Gear ratios are configured to support progressive acceleration and reduced engine speed during highway travel. The first gear ratio is listed at 10.233. Second gear is 7.093, third gear is 5.268, fourth gear is 4.266, fifth gear is 3.635, and sixth gear is 3.067. This spread allows the transmission to maintain usable torque delivery across a broad operating range while supporting lower engine rpm during steady cruising conditions.
Structural Design and Chassis Engineering
The chassis uses a mild steel tubular frame with a two-piece stamped and welded backbone. The structure includes cast and forged junctions, twin down tubes, and a bolt-on rear frame with forged fender supports. The frame sections are MIG-welded to support structural rigidity and long-term durability.
The swingarm also uses mild steel construction with a two-piece drawn and welded section and forged junctions. The overall frame and swingarm configuration is intended to provide predictable handling response while supporting the motorcycle’s touring weight and luggage capacity.
The motorcycle measures 94.9 inches in overall length, 38.6 inches in width, and 52.4 inches in height. The wheelbase measurement is listed at 64 inches. Steering geometry includes a 26-degree rake and a 29.25-degree fork angle. Trail measurement is specified at 6.7 inches. These dimensions influence directional stability, steering response, and straight-line tracking at highway speeds.
Seat height is measured at 27.5 inches in the laden condition and 29.1 inches unladen. Static ground clearance is rated at 5.3 inches. The motorcycle has an as-shipped weight of 782 pounds and a running-order weight of 816 pounds. Gross vehicle weight rating is listed at 1,360 pounds.
Suspension Tuning and Ride Control
The front suspension system uses 47 mm inverted 1x1 front forks. The forks include adjustable preload, compression damping, and rebound damping. This allows riders to alter suspension behavior according to road conditions, passenger load, and riding preferences.
Rear suspension uses emulsion shocks with adjustable preload, compression damping, and rebound damping. Rear suspension tuning contributes to load management and ride stability during extended touring operation.
Front suspension travel measures 4.6 inches, while rear suspension travel is rated at 3 inches. These travel figures support road isolation and chassis control during highway riding and surface transitions. Adjustable suspension components also allow the motorcycle to maintain stability under varying luggage and passenger conditions.
Wheel Construction 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.
Front tire specification is a Dunlop® Harley-Davidson® Series D408F in size 130/60B19 M/C 61H. Rear tire specification is a Dunlop® Harley-Davidson® Series D407T in size 180/55B18 M/C 80H. These tire dimensions contribute to straight-line stability, cornering grip, and touring load support.
Lean angle capability is rated at 31 degrees on both the right and left sides. Testing follows SAE J1168 standards. The equal lean-angle specification supports balanced cornering characteristics during operation.
Braking Hardware and Rider Safety Systems
The braking system uses dual radial-mounted 4-piston fixed front calipers and a single axial-mounted rear caliper. Front braking components include dual floating wave-style rotors measuring 12.6 inches in diameter. Rear rotor diameter measures 11.8 inches.
Anti-lock Braking System functionality is included as standard equipment. The motorcycle also includes Electronic Linked Braking, which distributes braking force between front and rear systems under controlled conditions. Traction Control System functionality monitors wheel behavior to assist with traction management during acceleration.
The Drag-torque Slip Control System assists with rear-wheel management during aggressive deceleration and downshifting conditions. Vehicle Hold Control functionality supports stationary operation on inclined surfaces by maintaining brake pressure temporarily after the rider releases the brake lever.
The Tire Pressure Monitoring System continuously monitors tire inflation levels and relays tire condition information through the display system.
Cornering-Enhanced Safety Technologies
The motorcycle includes several cornering-enhanced rider assistance systems designed to account for lean angle during operation. Cornering Enhanced Anti-lock Braking System functionality adjusts braking intervention during cornering conditions. Cornering Enhanced Electronic Linked Braking modifies brake distribution while leaned into turns.
Cornering Enhanced Traction Control System functionality assists with traction management while cornering. Cornering Drag-Torque Slip Control System functionality also operates with lean-angle consideration during downshifting and deceleration.
Electrical Components 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 capability is supplied through a three-phase 58-amp system with a maximum output of 754 watts at 13 volts.
Engine starting is managed through a 1.6 kW electric starter system with solenoid shift starter motor engagement. Lighting systems use LED technology for the headlamp, tail, and stop lamps, front signal lights, and rear turn signals.
Digital gauges are integrated directly into the display system. The motorcycle also includes a 15-watt USB-C electric power outlet located in the media storage compartment. This connection supports charging and compatible accessory connectivity during operation.
Skyline™ OS Infotainment Interface
The infotainment system operates through Skyline™ OS and uses a 12.3-inch full-color TFT display. Audio output is rated at 125 watts per channel. The motorcycle includes two 6.5-inch fairing-mounted speakers.
AM and FM radio functionality are standard. USB-connected media support includes SD card, flash drive, and MP3 compatibility. Bluetooth® functionality supports hands-free mobile phone operation, phone and media connectivity, and compatible headset integration.
Apple CarPlay® compatibility is available through both wireless and wired connection methods. The vehicle information display includes operational data such as air temperature, oil pressure, and Engine Idle Temperature Management System information.
Embedded navigation functionality is included within the system architecture. Navigation capability also integrates traffic and weather information through Wi-Fi hotspot connectivity, where subscription services apply.
Fuel Capacity and Touring Utility
Fuel capacity is rated at 6 gallons, with a reserve fuel warning capacity of 1 gallon. Estimated fuel economy is listed at 44 mpg under estimated city and highway testing conditions.
Oil capacity with filter is specified at 5 quarts. Transmission capacity is listed at 1 quart, while the primary chain case holds 1.1 quarts. Coolant capacity is rated at 0.82 quarts.
Luggage volume totals 2.42 cubic feet. This storage capacity supports long-distance touring requirements and equipment transport during extended travel operations.
Visit Harley-Davidson® of New Port Richey for a Test Ride
Riders interested in examining the technical systems and riding characteristics of the 2026 Harley-Davidson® CVO™ Street Glide® ST can schedule a test ride at Harley-Davidson® of New Port Richey near Homosassa, FL. A supervised ride allows direct evaluation of the Milwaukee-Eight® 121 High Output engine, the 6-Speed Cruise Drive® transmission, and the adjustable suspension system. Riders can also review the Skyline™ OS display, integrated navigation system, braking technologies, and cornering-enhanced rider safety systems during operation. The motorcycle’s touring dimensions, riding position, and electronic rider aids can be assessed under normal road conditions. Our team can also provide detailed information regarding drivetrain operation, infotainment functionality, and chassis specifications during your visit.
