| Component | Specification |
|---|---|
| Engine | Twin Cam 110™ (1803cc) |
| Oil Type | SYN3 Synthetic 20W50 |
| Oil Capacity | 3.3 L |
| Front Tire | MT90B16 72H (36 psi) |
| Rear Tire | MU85B16 77H (40 psi) |
| Battery | 66010-97C |
| Spark Plug | 6R12 |
The 2007 FLHTCU-SE2 marks a pivotal moment in Harley-Davidson history as it was the first year the Custom Vehicle Operations (CVO) division introduced the massive 110-cubic-inch Twin Cam engine to the Ultra touring platform. This 1,803cc powerhouse redefined the expectations for factory-built torque, delivering a level of long-haul performance previously reserved for aftermarket modifications.
Engineering Overview
The FLHTCU-SE2 is more than just a large engine; it is a showcase of H-D’s touring refinement. The 2007 model featured the 6-speed Cruise Drive transmission, which significantly lowered RPMs at highway speeds, reducing vibration and rider fatigue. The chassis, while based on the traditional touring frame, was augmented with air-adjustable rear suspension to handle the added weight of the premium CVO accessories and luggage.
Maintenance & Service Specifications
Maintaining the high-performance Twin Cam 110 requires adherence to strict lubrication standards. MotoSpecsLab recommends the following for the FLHTCU-SE2:
- Lubrication: Use 3.3 Liters of SYN3 Synthetic 20W50. This synthetic blend is crucial for managing the higher heat output of the 110ci engine compared to standard 88 or 96ci variants.
- Tires and Handling: For optimal stability, the front MT90B16 72H must be kept at 2.5 bar (36 psi). The rear MU85B16 77H requires 2.8 bar (40 psi) to support the weight of the Tour-Pak and passenger.
- Electrical: The heavy-duty 66010-97C battery is required to provide the cold cranking amps needed to turn over the high-compression 1803cc cylinders.
- Ignition: 6R12 spark plugs remain the gold standard for this configuration, ensuring consistent combustion under heavy load.
Editor’s Verdict
The 2007 CVO Ultra remains a ‘Holy Grail’ for many touring enthusiasts. While the early 110 engines required careful monitoring of heat management, the sheer luxury—including the heated seat, navigation, and Harmon/Kardon audio—paired with the massive torque makes it a definitive high-authority touring machine. It is a masterpiece of chrome and displacement.
Frequently Asked Questions
A: While possible, it is highly discouraged. The Twin Cam 110 runs hotter than standard engines; SYN3 Synthetic 20W50 is specifically formulated to maintain viscosity under these extreme thermal conditions.
Q: How often should I check the tire pressure?
A: Given the 400kg+ curb weight of the FLHTCU-SE2, tire pressure should be checked before every long-distance ride to ensure safety and prevent uneven tread wear.