| Component | Specification |
|---|---|
| Model Series | RA 1250 / RA 1250S (RA1) |
| Production Years | 2021-Present |
| Engine Oil | 15W-50 Screamin’ Eagle SYN3 Full Synthetic (4.5 L) |
| Tire Dimensions | F: 120/70R19 60V / R: 170/60R17 72V |
| Operating Pressure | Front: 2.48 bar (36 psi) / Rear: 2.90 bar (42 psi) |
| Battery Part No. | 66000302 |
| Spark Plug | H-D 10R12A |
Engineering Highlight: The Revolution Max Paradigm
The Harley-Davidson Pan America (RA1) represents a radical engineering departure for the Milwaukee brand. A unique engineering highlight of this platform is the Revolution Max 1250 engine, which serves as a structural component of the chassis. Unlike traditional frames that cradle the motor, the RA1 utilizes the engine as a central member, significantly reducing weight and increasing torsional rigidity—a design philosophy typically reserved for high-performance superbikes, now adapted for global adventure touring.
Technical Review: Performance and Architecture
The RA 1250 series is powered by a liquid-cooled 1250cc V-Twin featuring Variable Valve Timing (VVT) on both intake and exhaust cams. This configuration provides a broad powerband that excels in both low-end torque for off-road technical sections and high-RPM horsepower for highway cruising. The Special (S) variant further introduces Adaptive Ride Height (ARH), a first-in-industry technology that lowers the motorcycle when at a standstill, solving the ergonomic challenge of high-clearance adventure bikes.
Maintenance Protocol & Critical Specifications
To maintain the integrity of the Revolution Max powertrain, strict adherence to fluid specifications is mandatory. The high-thermal environment of a dual-purpose V-Twin requires 15W-50 Screamin’ Eagle SYN3 Full Synthetic oil. The 4.5-liter capacity ensures adequate lubrication and cooling during extended high-load operation.
Chassis and Contact Patch
The RA1 utilizes a specific tire combination designed for a 70/30 street-to-dirt ratio. Maintaining the factory-specified pressures of 36 psi (Front) and 42 psi (Rear) is critical for the electronic suspension’s damping algorithms to function correctly. Deviations in pressure can lead to premature tire wear and erratic feedback from the Cornering Enhanced Electronic Linked Braking (C-ELB) system.
Electrical System
Given the heavy electronic load of the RA1250S (including IMU-based traction control and semi-active suspension), the battery (Part No. 66000302) must be kept in peak condition. For long-term storage, a dedicated lithium-compatible tender is recommended to protect the sophisticated ECU and sensor arrays.
Frequently Asked Questions
What is the oil change interval for the Pan America?
While Harley-Davidson suggests a 5,000-mile interval, MotoSpecsLab recommends an initial break-in change at 1,000 miles, followed by 5,000-mile increments using the specified 15W-50 SYN3 oil.
Can I use standard spark plugs?
It is highly recommended to use the OEM H-D 10R12A plugs. The Revolution Max engine’s combustion timing is finely tuned to the heat range and resistance of these specific units.