The 2026 Harley-Davidson® Pan America® 1250 ST combines a high-output Revolution® Max 1250 engine, advanced electronic rider assistance systems, electronically controlled suspension components, and a modern TFT display into a motorcycle engineered for performance-focused street riding. The model incorporates a lightweight chassis structure, cast aluminum wheels, Michelin® Scorcher Sport tires, and a comprehensive suite of rider safety technologies. Its technical specification emphasizes power delivery, chassis control, braking performance, rider information systems, and electronic connectivity. From the engine architecture and drivetrain design to the suspension, lighting, instrumentation, and safety equipment, the 2026 Harley-Davidson® Pan America® 1250 ST presents a highly integrated package built around measurable performance and rider functionality.
Engine Architecture and Performance
The 2026 Harley-Davidson® Pan America® 1250 ST is powered by the Revolution® Max 1250 engine, a liquid-cooled powerplant with a displacement of 1,252 cc, or 76.4 cubic inches. The engine uses a bore of 4.134 inches and a stroke of 2.846 inches, creating an oversquare design that supports its performance characteristics. A compression ratio of 13.0:1 contributes to the engine's output while maintaining a clearly defined operating specification. Harley-Davidson® rates the engine at 150 horsepower at 8,750 rpm and 94 ft-lb of torque at 6,750 rpm. These figures position the Revolution® Max 1250 as the central performance component of the motorcycle while working in conjunction with the chassis and electronic systems.
Valvetrain and Internal Engineering
The engine utilizes a chain-driven dual overhead camshaft configuration with four valves per cylinder. Hydraulic self-adjusting lifters help maintain consistent valve operation while reducing routine adjustment requirements associated with conventional valvetrain systems. Intake and exhaust variable valve timing are incorporated into the design, allowing the engine to manage valve events across a broad operating range. This advanced valvetrain arrangement supports the engine's power and torque characteristics while contributing to efficient airflow management. The combination of dual overhead cams, four-valve cylinder heads, and variable valve timing reflects a highly engineered approach to engine performance.
Fuel Delivery, Intake, and Exhaust Design
Electronic Sequential Port Fuel Injection manages fuel delivery for the Revolution® Max 1250 engine. This electronically controlled system supplies fuel directly through sequential injection events, supporting consistent operation throughout the rpm range. Air enters through a downdraft intake system equipped with tuned velocity stacks and washable filter media. The intake arrangement is designed to optimize airflow while maintaining serviceability through reusable filtration components. Exhaust gases exit through a 2-into-1-into-1 exhaust system featuring a catalyst integrated into the header assembly.
Lubrication, Cooling, and Fuel Capacity
A semi-dry sump lubrication system manages engine oil circulation and storage. The motorcycle carries 4.75 quarts of oil with a filter, providing the specified operating capacity for the Revolution® Max 1250 engine. Cooling requirements are supported by a coolant capacity of 2.32 quarts. Fuel is stored in a 5.6-gallon tank, providing substantial onboard capacity. The fuel injection warning-light reserve capacity is specified at 1 gallon, giving riders a clearly defined reserve amount when fuel levels become low.
Drivetrain and Transmission
The drivetrain of the 2026 Harley-Davidson® Pan America® 1250 ST transfers power through a gear-driven primary drive, a six-speed transmission, and a chain final drive. This arrangement creates a direct mechanical connection between the engine and rear wheel while maintaining the flexibility offered by a multi-ratio gearbox. Each component is specified to work within the overall performance package of the motorcycle. The drivetrain design complements the engine's power output and supports predictable power delivery across varying operating conditions. Together, these systems form the motorcycle's complete propulsion architecture.
Clutch and Primary Drive System
The primary drive uses a gear arrangement with a 49/89 ratio. Power then passes through a mechanical assist-and-slip clutch utilizing an eight-plate wet design rated at 1090N. The clutch assembly is engineered to manage engine torque while maintaining consistent engagement characteristics. Its assist-and-slip functionality forms an important part of the motorcycle's drivetrain package. The integration of these components contributes to controlled power transfer between the engine and transmission.
Six-Speed Transmission Ratios
The six-speed transmission uses carefully spaced overall gear ratios that progress from 13.11 in first gear to 4.436 in sixth gear. Intermediate ratios include 9.687 in second gear, 7.509 in third gear, 6.057 in fourth gear, and 5.08 in fifth gear. This progression establishes a structured relationship between engine speed and rear-wheel output. The transmission works alongside the chain final drive, which uses a 19/48 ratio. Together, these components provide the mechanical foundation for the motorcycle's performance characteristics.
Chassis Engineering and Dimensions
The 2026 Harley-Davidson® Pan America® 1250 ST uses a stressed-member chassis architecture built around a high-strength low-alloy steel trellis frame. The frame incorporates stamped, cast, and forged junctions joined through MIG welding techniques. An aluminum forged mid-structure is integrated into the design, contributing to the overall chassis construction. This engineering approach combines multiple manufacturing methods to create a rigid structural platform. The chassis serves as the foundation for the motorcycle's suspension, braking, and handling systems.
Geometry and Physical Measurements
Overall length measures 88.2 inches, while overall width measures 35.3 inches. The motorcycle stands 52.4 inches tall and utilizes a wheelbase of 62.2 inches. Steering geometry consists of a 25-degree rake and a 25-degree fork angle. Trail is specified at 3.7 inches, contributing to the motorcycle's steering characteristics. Ground clearance measures 6.7 inches, providing consistent clearance specifications throughout the chassis package.
Weight and Load Ratings
The motorcycle has an as-shipped weight of 511 pounds and a running-order weight of 546 pounds. The Gross Vehicle Weight Rating is specified at 1,003 pounds. Front Gross Axle Weight Rating measures 399 pounds, while the rear axle carries a rating of 665 pounds. These figures establish the operational weight parameters of the motorcycle. The published ratings provide clear guidance regarding the vehicle's designed load capacities.
Suspension System and Ride Control
The suspension package on the 2026 Harley-Davidson® Pan America® 1250 ST combines electronically managed preload functions with manual damping adjustments. Both ends of the motorcycle provide substantial suspension travel while incorporating adjustability intended to support rider setup preferences. The suspension design works directly with the chassis geometry and wheel package. This integrated approach helps define the motorcycle's handling characteristics. Suspension specifications are a significant part of the model's engineering profile.
Front Suspension Design
The front suspension consists of a 47 mm inverted fork equipped with electronically adjustable preload. Compression damping and rebound damping can be adjusted manually, allowing riders to tailor suspension behavior within the available adjustment range. Aluminum fork triple clamps form part of the front suspension assembly. Front suspension travel is specified at 6.7 inches. The combination of electronic preload control and manual damping adjustment creates a versatile front suspension configuration.
Rear Suspension Design
At the rear, the motorcycle uses a linkage-mounted monoshock system. Automatic electronic preload control manages suspension setup while manual compression and rebound damping adjustments remain available. Rear suspension travel matches the front at 6.7 inches. This consistency in suspension travel contributes to balanced chassis behavior. The rear suspension package works in conjunction with the cast aluminum swingarm and chassis structure to support overall ride dynamics.
Wheels, Tires, and Handling Components
The wheel and tire package of the 2026 Harley-Davidson® Pan America® 1250 ST is built around 17-inch cast aluminum wheels finished in satin black. Both front and rear wheels are designed to integrate with the motorcycle's braking and suspension systems. The wheel dimensions provide compatibility with the specified Michelin® tire package. Together, these components contribute to the motorcycle's handling configuration. Their dimensions and specifications form an important part of the overall chassis design.
Cast Aluminum Wheel Specifications
The front wheel measures 17 inches in diameter and 3.5 inches in width. The rear wheel also measures 17 inches in diameter but uses a wider 5.5-inch profile. Both wheels are constructed from cast aluminum and finished in satin black. The wheel design supports the installation of the specified Michelin® tire sizes. Their dimensions align with the overall geometry and suspension package of the motorcycle.
Michelin® Scorcher Sport Tires
The front tire is a Michelin® Scorcher Sport in size 120/70ZR17 58W. The rear tire is a Michelin® Scorcher Sport in size 180/55ZR17 73W. These tires are paired specifically with the 17-inch wheel package used on the motorcycle. The tire dimensions complement the motorcycle's chassis layout and steering geometry. Lean angle capability is specified at 37 degrees to both the right and left sides.
Braking Systems and Rider Safety Technologies
The braking system combines high-capacity hardware with a broad range of electronic rider assistance technologies. These systems are integrated to support controlled braking performance and vehicle management. Multiple rider safety enhancements are included as standard equipment. The motorcycle also incorporates cornering-sensitive systems that expand upon the base electronic features. Together, these technologies form one of the most comprehensive technical areas of the model.
Brake Hardware Specifications
The front braking system uses dual floating hub-mounted rotors measuring 12.6 inches in diameter and 0.17 inches in thickness. Radially mounted monoblock four-piston calipers provide front braking force. The rear brake uses a solid uniform-expansion rotor measuring 11 inches in diameter and 0.2 inches in thickness. A floating single-piston caliper manages rear braking duties. Anti-lock Braking System functionality is included as standard equipment.
Electronic Rider Safety Enhancements
The 2026 Harley-Davidson® Pan America® 1250 ST includes an Anti-lock Braking System, Electronic Linked Braking, Traction Control System, Drag-torque Slip Control System, Vehicle Hold Control, Tire Pressure Monitoring System, and Wheel Lift Mitigation. These systems are designed to support motorcycle control through electronic intervention and monitoring functions. Tire pressure information is integrated into the vehicle's information displays. Vehicle Hold Control and Wheel Lift Mitigation further expand the range of included rider assistance technologies. Together, these systems create a comprehensive suite of standard safety features.
Cornering Rider Safety Enhancements
Cornering-specific systems include the Cornering Enhanced Anti-lock Braking System, Cornering Enhanced Electronic Linked Braking, Cornering Enhanced Traction Control System, and Cornering Drag-torque Slip Control System. Enhanced Lift Mitigation is also included. These systems build upon the standard rider safety technologies through cornering-sensitive functionality. Their inclusion demonstrates the motorcycle's extensive electronic support package. The result is a layered approach to rider assistance that spans braking, traction, and vehicle control functions.
Electrical Equipment and Rider Information Systems
The electrical architecture supports starting, charging, lighting, instrumentation, connectivity, and rider information functions. Each component is specified to work within a coordinated electrical system. The motorcycle uses modern lighting technology and a feature-rich display interface. Connectivity features are integrated directly into the instrument system. Together, these components provide information and functionality without requiring a separate infotainment unit.
Battery, Charging, and Starting Systems
Power is supplied by a sealed maintenance-free absorbed glass mat battery rated at 12 volts, 17.5 Ah, and 310 CCA at 0°F. Charging is managed through a three-phase 45-amp system capable of producing 390 watts at 13 volts and 1,300 rpm, with a maximum output of 585 watts at 13 volts and 2,500 rpm. Engine starting uses a 0.9 kW electric starter with direct-drive engagement. These components provide the electrical foundation for the motorcycle's systems. Their specifications establish the operational capabilities of the charging and starting architecture.
Lighting and Display Technology
Lighting equipment includes a Daymaker® Adaptive LED headlamp, an all-LED tail and stop lamp with signature tail lighting, and LED Bullet Turn Signals at both the front and rear. Rider information is displayed through a 6.8-inch TFT touchscreen display. The display includes a speedometer, tachometer, gear position, odometer, fuel level, clock, trip information, range data, ambient temperature information, and multiple alert functions. Additional display information includes low-temperature alerts, side-stand alerts, tip-over alerts, and cruise indication. The instrument package serves as the primary interface between rider and vehicle systems.
Connectivity and Functional Features
Bluetooth® capability allows phone pairing for supported functions, including phone calls, media access, and navigation through the H-D Mobile App. Hands-free mobile phone functionality is included as standard equipment. Rider and passenger intercom capability is supported through headset functionality. The vehicle information screen provides data including tire pressure monitoring, engine temperature, battery voltage, and ambient air temperature. USB-C connectivity supports charging and instrument updates, with specified outputs of 5V at 2.4 amps and USB charging capability rated at 5V and 3A.
Schedule a Test Ride near Brandon, FL
We invite you to experience the 2026 Harley-Davidson® Pan America® 1250 ST firsthand and explore its advanced engineering in a riding environment. A test ride provides an opportunity to evaluate the Revolution® Max 1250 engine, electronically managed suspension, TFT display technology, and comprehensive rider safety systems. Our team can help you become familiar with the motorcycle's handling characteristics, rider information features, connectivity functions, and braking technologies. You can also examine the chassis design, wheel and tire package, seating position, and electronic control systems in greater detail. Visit Tampa Bay Harley-Davidson® near Brandon, FL to schedule a test ride and learn more about the 2026 Harley-Davidson® Pan America® 1250 ST.
