The 2026 Harley-Davidson® Pan America® 1250 ST is engineered as a road-oriented adaptation of the Pan America® platform, incorporating a high-output liquid-cooled engine, electronically managed suspension, advanced braking systems, and integrated rider assistance technologies. The model uses a 17-inch wheel configuration, sport-oriented tire selection, and revised chassis geometry to support paved-road handling characteristics. The motorcycle measures 88.2 inches in length, 35.3 inches in width, and 52.4 inches in height, with a wheelbase of 62.2 inches. Ground clearance is specified at 6.7 inches.
Fuel capacity is rated at 5.6 gallons with a 1-gallon reserve warning threshold. The system supports an estimated fuel economy of 46 miles per gallon. Oil capacity is listed at 4.75 quarts with filter, and coolant capacity is 2.32 quarts. The motorcycle has an as-shipped weight of 511 pounds and a running order weight of 546 pounds.
High-Output Revolution® Max 1250 Engine Configuration
The 2026 Harley-Davidson® Pan America® 1250 ST is powered by the Revolution® Max 1250 engine, a liquid-cooled V-twin with a displacement of 1,252 cubic centimeters. The engine uses a bore of 105 mm and a stroke of 72.3 mm. The compression ratio is 13.0:1. Output is rated at 150 horsepower at 8,750 rpm and 94 ft-lb of torque at 6,750 rpm.
The valve train includes dual overhead camshafts driven by chains, hydraulic self-adjusting lifters, and four valves per cylinder. Variable valve timing is applied to both intake and exhaust. This configuration supports airflow management across a wide engine speed range. The lubrication system uses a semi-dry sump design.
Fuel delivery is handled by Electronic Sequential Port Fuel Injection. The intake system uses a downdraft layout with tuned velocity stacks and a washable air filter. The exhaust system follows a 2-into-1-into-1 configuration with the catalyst positioned in the header assembly.
Transmission, Clutch Design, and Gear Ratios
The motorcycle uses a 6-speed transmission paired with a gear-driven primary system with a 49/89 ratio. Final drive is handled by a chain with a 19/48 ratio. The clutch is an 8-plate wet design with assist and slip functionality. This configuration supports reduced lever effort and controlled deceleration during downshifting.
Gear ratios are distributed to provide a progressive transition through the transmission range. First gear is 13.11, followed by 9.687 in second, 7.509 in third, 6.057 in fourth, 5.08 in fifth, and 4.436 in sixth. These values show a consistent reduction between gears, supporting acceleration and steady operation across a range of speeds.
Frame Structure and Steering Geometry
The frame is a stressed-member design constructed from high-strength low-alloy steel. It uses a trellis structure with stamped, cast, and forged junctions joined through MIG welding. An aluminum forged mid-structure is integrated into the assembly. The engine contributes as a structural component within the frame.
The steering geometry includes a rake angle of 25 degrees and a trail measurement of 3.7 inches. The swingarm is a one-piece cast aluminum unit. These structural elements contribute to directional stability and steering precision.
Electronically Managed Suspension Components
The front suspension consists of a 47 mm inverted fork with electronically adjustable preload. Compression and rebound damping are manually adjustable. The rear suspension uses a linkage-mounted monoshock with automatic electronic preload control and manual damping adjustment. Both front and rear suspension travel are rated at 6.7 inches.
Seat height varies based on configuration. With optional Adaptive Ride Height suspension in the low position, the laden seat height is 29.4 inches, and the unladen height is 31.7 inches. These measurements indicate compatibility with adaptive suspension functionality designed to adjust ride height under specific conditions.
Wheel and Tire Configuration for Road Performance
The 2026 Harley-Davidson® Pan America® 1250 ST uses cast aluminum wheels with a satin black finish. Both front and rear wheels measure 17 inches in diameter. The front wheel width is 3.5 inches, and the rear is 5.5 inches.
Tire selection consists of Michelin® Scorcher Sport tires. The front tire specification is 120/70ZR17 58W, and the rear is 180/55ZR17 73W. This configuration supports traction and contact area consistent with street-oriented operation.
Braking System and Hardware Specifications
The front braking system uses radially mounted monoblock four-piston calipers with dual floating rotors measuring 320 mm in diameter. Rotor thickness is 4.5 mm. The rear brake uses a floating single-piston caliper with a 280 mm rotor and a thickness of 5 mm.
An anti-lock braking system is included as standard equipment. The braking system is designed to provide consistent deceleration and controlled braking performance under varying conditions.
Lean Angle and Performance Metrics
The 2026 Harley-Davidson® Pan America® 1250 ST is rated with a lean angle of 37 degrees on both the right and left sides. Engine torque testing follows the J1349 standard, and lean angle testing follows the J1168 standard. These metrics provide reference values for evaluating performance capability and handling limits.
Electrical System and Lighting Components
The motorcycle uses a sealed maintenance-free AGM battery rated at 12 volts, 17.5 amp-hours, and 310 cold cranking amps at 0 degrees Fahrenheit. Charging is handled by a three-phase 45-amp system with 390 watts output at 1,300 rpm and a maximum of 585 watts at 2,500 rpm.
Lighting components include a Daymaker® Adaptive LED headlamp, an all-LED tail and stop lamp with signature lighting, and LED bullet-style front and rear turn signals. These components are designed to meet visibility and durability requirements.
Display Interface and Connectivity Functions
The instrument system is built around a 6.8-inch color TFT touchscreen display. The interface provides speedometer, gear position, odometer, fuel level, trip data, ambient temperature, and tachometer readings. It also includes alerts for low temperature, side stand position, and tip-over detection.
Bluetooth® capability allows connection to a mobile device for phone calls, media access, and navigation through the Harley-Davidson® mobile application. Hands-free mobile phone functionality is included. USB-C connectivity provides charging and system update capability with output rated at 5 volts and up to 3 amps, depending on configuration.
Rider Safety Systems and Electronic Control Features
The 2026 Harley-Davidson® Pan America® 1250 ST includes a range of rider safety enhancements. These systems include 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.
Cornering-specific systems are also included. These consist of Cornering Enhanced Anti-lock Braking System, Cornering Enhanced Electronic Linked Braking, Cornering Enhanced Traction Control System, Cornering Drag-Torque Slip Control System, and Enhanced Lift Mitigation. These systems are designed to adjust braking and traction parameters based on lean angle and vehicle dynamics.
Schedule a Test Ride at Pig Trail Harley-Davidson®
The 2026 Harley-Davidson® Pan America® 1250 ST presents a combination of a 150-horsepower engine, electronically adjustable suspension, and integrated rider assistance systems that can be assessed through direct operation. A test ride provides an opportunity to evaluate throttle response, braking control, suspension behavior, and display functionality under typical riding conditions. Riders can observe how the 17-inch wheel configuration and Michelin® Scorcher Sport tires influence handling characteristics. The interaction between electronic safety systems and mechanical components becomes more apparent during operation. We invite you to schedule a test ride with Pig Trail Harley-Davidson® near Bentonville, AR, to examine these systems in a controlled and informative setting.
