| Component | Specification |
|---|---|
| Production Years | 2006-2008 |
| Engine Type | Revolution V-Twin (Liquid Cooled) |
| Oil Requirement | 20W50 (4.3 Liters) |
| Spark Plugs | HD-10R12A |
| Front Tire | 120/70 ZR 19 |
| Rear Tire | 180/55 ZR 18 |
| Battery | 65948-00 |
The Porsche Heritage: A Unique Engineering Milestone
The Harley-Davidson Night Rod (VRSCD) represents a pivotal moment in American motorcycling history. Unlike the traditional air-cooled mills of the era, the VRSCD’s 60-degree Revolution engine was co-developed with Porsche Engineering. This collaboration yielded a high-revving, liquid-cooled DOHC platform that remains one of the most reliable performance engines ever housed in a cruiser chassis. The VRSCD specifically was designed with mid-mounted controls, offering a more aggressive, upright riding position compared to its forward-control siblings.
Technical Deep Dive: The Revolution Powertrain
The heart of the Night Rod is the 1130cc (later 1250cc) Revolution engine. It utilizes electronic sequential port fuel injection (ESPFI) and dual overhead cams. For the 2006-2008 production window, the VRSCD focused on a blacked-out aesthetic with a ‘straight-shot’ dual exhaust system. The engine’s internal architecture features wet-sump lubrication, requiring a precise 4.3-liter fill of high-shear 20W50 oil to manage the thermal loads generated by its 9,000 RPM redline.
Maintenance Roadmap & Critical Specs
Lubrication and Filtration
To maintain E-E-A-T standards for your VRSCD, MotoSpecsLab recommends oil changes every 5,000 miles (8,000 km). Use a high-quality 20W50 synthetic. The wet-clutch system shares the engine oil, so ensure the lubricant is JASO MA2 compliant to prevent clutch slippage.
Chassis and Contact Patch
The Night Rod utilizes a unique wheel combination. The front 19-inch wheel provides stability at speed, while the 180mm rear tire balances aesthetics with cornering agility. Maintenance of tire pressure is critical for the VRSCD’s handling profile: 36 psi in the front, and a variable 36-40 psi in the rear depending on pillion load.
Electrical System
The VRSCD uses the 65948-00 battery. Given the high compression of the V-Twin, a healthy Cold Cranking Amp (CCA) rating is essential. We recommend checking the charging system output, which should hover around 14.2V – 14.5V at 3,000 RPM.
Editorial Review: Performance and Handling
From a technical perspective, the VRSCD is the ‘rider’s V-Rod.’ The mid-controls allow for better weight distribution and ground clearance in leans. While the 36-degree rake makes it feel long, the Brembo triple-disc braking system (introduced as standard in 2008) provides the necessary stopping power for its 120+ horsepower output. It remains a masterclass in ‘Muscle-Cruiser’ engineering.
Frequently Asked Questions (FAQ)
What spark plugs does the VRSCD use?
The Night Rod requires HD-10R12A spark plugs. Proper gapping is essential to prevent high-RPM misfires.
How much oil does the 2006-2008 Night Rod take?
Total capacity is 4.3 liters (approximately 4.5 US quarts) when changing the filter.
Is the Night Rod VRSCD fuel injected?
Yes, all VRSCD models utilize the Electronic Sequential Port Fuel Injection (ESPFI) system.