| Specification | Value |
|---|---|
| Model | Harley-Davidson Street Glide (117 cui) – FLHX/24 |
| Production Years | 2024-Present |
| Engine Oil | SAE 20W50 (3.8-4.3 L) |
| Tire Size | F: 130/60B19 61H / R: 180/55B18 80H |
| Tire Pressure | F: 36 psi (2.5 bar) / R: 42 psi (2.9 bar) |
| Battery Part Number | 66000207 |
| Spark Plug Type | HD-6R10 |
Engineering Highlight: The 2024 Street Glide (FLHX) represents a pivotal moment in Harley-Davidson’s Grand American Touring history. For the first time, the Milwaukee-Eight 117 cubic inch V-Twin has been transitioned from the exclusive CVO line to the standard production model. This engine features a new liquid-cooled cylinder head system that significantly improves thermal management in stop-and-go traffic, a direct descendant of the “Project Rushmore” innovations but refined for the modern era.
The Milwaukee-Eight 117 Powertrain
At the heart of the FLHX/24 is the 1,923cc Milwaukee-Eight 117 engine. This powerplant delivers a massive torque curve, optimized by a high-performance camshaft and a high-flow intake. The 2024 redesign also includes a revised fairing and bodywork that improves aerodynamic efficiency by 60%, reducing helmet buffeting while maintaining the iconic batwing silhouette.
Maintenance Essentials
To maintain peak performance and the longevity of the 117 powertrain, adhering to strict lubrication and electrical standards is paramount. The use of SAE 20W50 oil is mandatory for the V-Twin’s high-temperature operating environment, requiring 3.8 to 4.3 liters depending on filter displacement.
Tires and Chassis
The FLHX/24 utilizes a specific tire combination designed for heavy touring stability. The front 130/60B19 and rear 180/55B18 tires must be maintained at 36 psi and 42 psi respectively. Proper inflation is critical not just for tread life, but for the correct calibration of the Reflex Defensive Rider Systems (RDRS).
Electrical System
With the integration of the Skyline™ OS and the large TFT display, the electrical load is higher than previous generations. The 66000207 battery is the specified replacement to ensure sufficient cold cranking amps (CCA). For ignition, the HD-6R10 spark plugs are gapped specifically to handle the compression ratio of the 117 engine.
Frequently Asked Questions
How often should I change the oil?
Under normal conditions, oil changes are recommended every 5,000 miles (8,000 km), though an initial break-in service at 1,000 miles is vital for the 117 engine.
Can I use synthetic oil?
Yes, Harley-Davidson’s Screamin’ Eagle SYN3 Synthetic is highly recommended for the 117 engine to provide superior protection at high operating temperatures.