| Component | Specification |
|---|---|
| Engine Type | Air-cooled, Twin Cam 110™ (1,803cc) |
| Engine Oil | SYN3 Synthetic 20W-50 (3.8 L) |
| Front Tire (2010) | 130/70B18 63H |
| Front Tire (2011-2012) | 130/60B19 61H |
| Rear Tire | 180/55B18 80H |
| Tire Pressure (F/R) | 36 psi / 40 psi (2.5 / 2.8 bar) |
| Spark Plugs | 6R12 |
| Battery | 66010-97D |
Historical Engineering Highlight: The 2010-2012 FLHXSE series represented a pivotal moment for Custom Vehicle Operations (CVO). It was the first time Harley-Davidson paired the high-torque Screamin’ Eagle 110-cubic-inch powertrain with the stripped-down, hot-rod bagger aesthetic of the Street Glide, effectively creating a factory-custom that outperformed the standard Touring line in both thermal efficiency and raw output.
Technical Overview: The 110 Twin Cam Heart
The FLHXSE series (encompassing the original FLHXSE, FLHXSE2, and FLHXSE3) is powered by the 1803cc Screamin’ Eagle Twin Cam 110 engine. This powerplant utilizes electronic sequential port fuel injection (ESPFI) and produces approximately 115 ft-lb of peak torque. Maintaining this high-output engine requires strict adherence to fluid quality, specifically the use of full synthetic lubricants to manage the increased heat generated by the larger bore cylinders.
Maintenance Guide
1. Lubrication System
For the 110 Twin Cam, SYN3 Synthetic 20W-50 is the factory-mandated standard. The system requires 3.8 Liters. At MotoSpecsLab, we emphasize checking the oil level only when the engine is at operating temperature to avoid overfilling, which can lead to airbox carry-over.
2. Chassis and Wheel Configuration
A critical technical distinction exists between the model years. The 2010 FLHXSE utilizes an 18-inch front wheel (130/70B18). However, for the 2011 (FLHXSE2) and 2012 (FLHXSE3) iterations, Harley-Davidson transitioned to a 19-inch front wheel (130/60B19) to sharpen handling and accommodate the Agitator Custom wheels. Both generations share the 180/55B18 rear tire. Maintain pressures at 36 psi (Front) and 40 psi (Rear) for optimal carcass longevity.
3. Electrical and Ignition
The ignition system relies on 6R12 spark plugs. Given the high-compression nature of the CVO heads, ensure the gap is set precisely to factory specs to prevent high-load misfires. The electrical system is anchored by the 66010-97D battery, which provides the high cold-cranking amps (CCA) necessary to turn over the heavy 110-inch flywheels.
MotoSpecsLab Verdict
The FLHXSE/2/3 remains one of the most desirable CVO models for its balance of style and performance. From a technical perspective, the transition to the 19-inch front wheel in 2011 marked a significant improvement in low-speed maneuverability. Proper maintenance of the primary drive and frequent oil analysis of the 110 engine are recommended to ensure long-term reliability of this high-performance touring machine.