| Quick Specs: FLHTKSE CVO LIMITED | |
|---|---|
| Engine | Milwaukee-Eight 117 V-Twin (1,923cc) |
| Oil Type | H-D SYN3 Full Synthetic 20W-50 (3.8 L) |
| Front Tire | 130/60B19 61H (36 psi / 2.48 bar) |
| Rear Tire | 180/55B18 80H (42 psi / 2.90 bar) |
| Spark Plug | H-D 6R10 (Gap: 0.76-0.89 mm) |
| Battery SKU | 66000175 |
The Harley-Davidson CVO Limited (FLHTKSE) holds a distinctive place in motorcycling history as the platform that first introduced the 117 cubic-inch Milwaukee-Eight engine to the production line. Previously, a displacement of 1,923cc was exclusive to the Screamin’ Eagle aftermarket bolt-on kits, making the 2018-2021 CVO Limited a factory-tuned powerhouse that redefined the expectations of luxury touring torque.
Engineering Overview: The 117 Milwaukee-Eight
At the heart of the FLHTKSE is the precision-cooled Milwaukee-Eight 117. This engine utilizes a combination of air-cooling and targeted liquid-cooling (Twin-Cooled technology) to manage the thermal loads generated by its massive 4.075-inch bore. With a compression ratio of 10.2:1, the engine is designed to deliver peak torque of 125 ft-lb at just 3,500 RPM, providing effortless passing power even when fully loaded with a passenger and luggage.
Maintenance Protocol & Fluids
To maintain the high-performance tolerances of the CVO line, MotoSpecsLab recommends a strict adherence to synthetic lubrication. The Harley-Davidson SYN3 Full Synthetic 20W-50 is the primary choice for the engine, primary chaincase, and transmission. Total engine oil capacity is approximately 3.8 liters (4.0 quarts).
- Ignition System: The 117 CUI engine requires H-D 6R10 spark plugs. Proper gapping between 0.76mm and 0.89mm is critical to prevent high-load misfires common in high-displacement V-twins.
- Chassis & Tires: The FLHTKSE utilizes a specific Dunlop Harley-Davidson Series tire set. Maintaining 36 psi in the front and 42 psi in the rear is essential for the longevity of the dual-compound rubber and the stability of the Reflex Linked Brembo brakes.
Performance Dynamics
The CVO Limited isn’t just about the engine; it features the Dual Bending Valve front suspension and emulsion rear shocks with hand-adjustable preload. In our technical evaluation, the FLHTKSE demonstrates superior damping characteristics compared to the standard Ultra Limited, specifically in mitigating the ‘pogo’ effect during aggressive cornering. The inclusion of the Boom!™ Box GTS infotainment and the Daymaker Adaptive LED headlamp further solidify its status as the pinnacle of the H-D touring lineup.
Frequently Asked Questions
What battery is required for the FLHTKSE?
The model uses the high-cranking 66000175 battery, designed to handle the high-torque starter motor required for the 117 CUI engine.
How often should the oil be changed?
While the manual suggests longer intervals, for the CVO 117, we recommend a full fluid service every 5,000 miles (8,000 km) to ensure the longevity of the Twin-Cooled components.