| Specification | Value |
|---|---|
| Engine Type | Twin Cam 96 (1584cc) |
| Engine Oil | SAE 20W50 (3.8 Liters) |
| Front Tire | MT90B16 72H (36 psi / 2.5 bar) |
| Rear Tire | MU85B16 77H (40 psi / 2.8 bar) |
| Battery Model | 66010-97C |
| Spark Plug | HD-6R12 |
The 2007 Milestone: Engineering Excellence
The 2007 Harley-Davidson FLHTCU Electra Glide Ultra Classic holds a unique place in Milwaukee history. It was the inaugural year for the Twin Cam 96 engine and the 6-speed Cruise Drive transmission across the touring lineup. This combination increased torque by 17% over its predecessor and significantly reduced highway vibration, marking the transition from traditional ‘cruiser’ mechanics to modern ‘touring’ performance.
Technical Deep Dive: Engine and Drivetrain
The core of the 2007 FLHTCU is the 1584cc V-Twin. Beyond the displacement increase, this year introduced Electronic Sequential Port Fuel Injection (ESPFI) as standard, improving cold starts and throttle response. The Cruise Drive transmission features helical-cut gears in several ratios to provide quieter operation and smoother shifting, specifically designed to handle the increased torque of the 96ci powerplant.
Maintenance Essentials
Maintaining a heavy-duty touring machine requires precision. Our MotoSpecsLab technicians emphasize the following for the FLHTCU/07:
- Lubrication: Use a high-quality SAE 20W50 oil. The system requires 3.8 liters for a full change including the filter.
- Tire Integrity: Given the 800lb+ wet weight, maintaining 36 psi (Front) and 40 psi (Rear) is critical for sidewall stability and heat management during long-distance hauls.
- Electrical: The 66010-97C battery is essential for providing the high cold-cranking amps (CCA) required to turn over the large displacement V-twin.
MotoSpecsLab Verdict
The 2007 Electra Glide Ultra Classic remains a gold standard for used touring motorcycles. While it lacks the later ‘Project Rushmore’ liquid cooling, its air-cooled Twin Cam 96 is renowned for its reliability and the ‘pure’ Harley-Davidson sound profile. For the long-distance rider, it offers a perfect balance of legacy aesthetics and modern mechanical capability.
Frequently Asked Questions
What is the recommended spark plug gap?
For the HD-6R12 plugs, the gap should be set between 0.038 and 0.043 inches (0.97 – 1.09 mm).
How often should I change the primary chaincase lubricant?
Under standard operating conditions, the primary lubricant should be inspected every 5,000 miles and changed every 10,000 miles.