| Parameter | Specification |
|---|---|
| Production Years | 2017 – 2020 |
| Engine Type | High Output Revolution X™ V-Twin |
| Engine Oil | SAE 15W-50 (H-D SYN3) – 3.1 Liters |
| Front Tire / Pressure | 120/70 R17 V / 2.48 bar (36 psi) |
| Rear Tire / Pressure | 160/60 R17 V / 2.76 bar (40 psi) |
| Spark Plug | HD-6G10 |
| Battery Part Number | 66000147 |
Engineering Highlight: While the standard Street 750 was designed as an entry-level urban cruiser, the Street Rod (XG750A) was a radical engineering departure. It features a unique High Output Revolution X™ engine that utilizes a larger volume airbox, dual 42mm throttle bodies, and high-lift camshafts. This configuration allows the engine to rev to 9,000 RPM, producing 18% more horsepower and 8% more torque than the base model, while the chassis was redesigned to offer a 40-degree lean angle—challenging the traditional cruiser geometry.
Technical Deep Dive: The Euro 4 Evolution
The XG750A Street Rod was Harley-Davidson’s answer to the growing demand for sportier, urban-focused motorcycles. The Euro 4 compliant powerplant is liquid-cooled, ensuring thermal stability even in heavy traffic. Structurally, the bike features 43mm inverted front forks and piggyback reservoir rear shocks, providing a much firmer and more responsive dampening profile than its predecessor.
Maintenance Guide & Fluid Capacities
To maintain the high-revving nature of the High Output Revolution X engine, MotoSpecsLab recommends strict adherence to the following service intervals:
Engine Lubrication
The Street Rod 750 requires 3.1 liters (3.3 US qt) of SAE 15W-50 synthetic oil. We specifically recommend H-D Screamin’ Eagle SYN3 to handle the higher operating temperatures associated with the increased compression ratio and higher redline of this specific variant.
Chassis and Tires
Unlike many Harleys that utilize 16 or 19-inch wheels, the Street Rod uses 17-inch wheels both front and rear, allowing for a wider selection of sport-touring rubber. The factory fitment is 120/70 R17 V at the front and 160/60 R17 V at the rear. Maintaining pressures at 36 psi (Front) and 40 psi (Rear) is critical for preserving the bike’s aggressive turn-in characteristics.
Electrical and Ignition
The ignition system utilizes HD-6G10 spark plugs. Given the higher rev range of the XG750A, plugs should be inspected for carbon fouling every 8,000 km. The electrical system is powered by the 66000147 battery; ensure terminals are clean and torqued to prevent vibration-induced starting issues.
MotoSpecsLab Verdict
The Harley-Davidson Street Rod 750 (XG750A) remains a standout for its aggressive ergonomics and atypical performance. It is a motorcycle that demands active riding and precise maintenance. Following the technical specs outlined above will ensure the longevity of this unique V-Twin platform.