| Specification | Detail |
|---|---|
| Production Years | 2009 – 2017 |
| Engine Type | Liquid-cooled, Revolution® V-Twin (Porsche Co-developed) |
| Oil Capacity | 4.7 Liters (5.0 US qt) |
| Tire Size (Front) | 120/70ZR-19 60W |
| Tire Size (Rear) | 240/40R-18 79V |
| Spark Plug | HD-10R12A |
| Battery | 65989-97E |
The Harley-Davidson VRSCF V-Rod Muscle represents a unique chapter in American motorcycling history: it features the Revolution® engine, a liquid-cooled powertrain co-developed with Porsche Engineering. Unlike traditional air-cooled Harleys, the VRSCF was designed with a short-stroke, high-RPM overhead cam architecture, making it one of the few H-D models capable of reaching a 9,000 RPM redline with sustained reliability.
Engineering Overview
The VRSCF “Muscle” distinguished itself from other V-Rod variants with its aggressive, angular styling, dual side exhausts, and the integration of LED turn signals directly into the mirror stalks—a bold aerodynamic and aesthetic choice for the era. The 1250cc engine produces approximately 122 horsepower, delivered to the massive 240mm rear tire via a carbon-fiber reinforced belt drive.
Maintenance Guide
1. Lubrication System
The Revolution engine is high-revving and requires premium lubrication to protect the valvetrain. We recommend Screamin’ Eagle SYN3 20W-50 Synthetic for optimal thermal stability, though Harley-Davidson 360 Mineral is acceptable. The total capacity is 4.7 Liters. Ensure the bike is upright when checking levels.
2. Tires and Traction
Handling a bike with a 240mm rear tire requires precise inflation. Under-inflation will lead to sluggish cornering and uneven wear.
- Front (120/70ZR-19): 2.5 bar (36 psi)
- Rear (240/40R-18): 2.9 bar (42 psi)
3. Electrical and Ignition
The VRSCF utilizes high-performance HD-10R12A spark plugs. Given the engine’s heat cycle, inspecting plugs every 8,000 miles is recommended. For starting reliability, the 65989-97E battery provides the necessary cold cranking amps (CCA) to turn over the high-compression V-twin.
Expert Verdict
From a technical standpoint, the V-Rod Muscle is a masterpiece of early 21st-century cruiser engineering. It bridges the gap between American muscle and European precision. For owners, strict adherence to the liquid-cooling system maintenance and tire pressure specs is vital to preserving the unique handling characteristics of this power-cruiser.
Frequently Asked Questions
How often should I change the oil?
While the manual suggests longer intervals, MotoSpecsLab recommends changing the 20W-50 oil every 5,000 miles or annually to mitigate moisture buildup in the liquid-cooled casing.
Can I use aftermarket spark plugs?
While equivalents exist, the HD-10R12A is specifically gapped for the Revolution engine’s ion-sensing ignition system, which helps prevent knock. Using OEM plugs is highly advised.