| Component | Specification |
|---|---|
| Engine | Milwaukee-Eight 114 (1,868cc) |
| Oil Type | SAE 20W50 |
| Oil Capacity | 3.8 Liters (4.0 US qt) |
| Front Tire | 130/80B17 65H |
| Rear Tire | 180/65B16 81H |
| Spark Plugs | 6R10 |
| Battery | OEM P/N 66000212 |
Engineering Highlight: The 2019 model year represents a significant milestone for the FLHTK series, as it was the first year the Milwaukee-Eight 114 V-Twin engine was moved from the CVO-exclusive tier to become the standard powerplant for the Ultra Limited. This shift provided a 5% increase in torque over the previous 107ci engine, specifically tuned to handle the 900+ lb wet weight of the fully dressed tourer.
Technical Review
As the flagship of the Grand American Touring line, the 2019 FLHTK/L (Ultra Limited and Ultra Limited Low) serves as a benchmark for long-distance ergonomics. The ‘Low’ variant (FLHTKL) is particularly notable for its engineering focus on accessibility, featuring a reduced seat height and narrower primary housing to allow shorter riders a more confident ‘feet-down’ stance without sacrificing the 114 cubic inch performance.
The chassis utilizes the high-performance front and rear suspension components introduced in the late Rushmore era, featuring hand-adjustable emulsion rear shocks. This system allows for precise preload tuning without the need for tools or air pumps, ensuring the geometry remains stable under varying passenger and luggage loads.
Maintenance Specifications & Procedures
Lubrication System
For the Milwaukee-Eight 114 engine, MotoSpecsLab recommends high-quality synthetic SAE 20W50. The total refill capacity is 3.8 Liters. Proper oil level checks should be performed with the motorcycle on its jiffy stand (lean) to ensure the dipstick reads accurately according to the manufacturer’s markings.
Tires and Chassis
Rolling stock consists of Dunlop® Harley-Davidson Series bias-blackwall tires. Maintaining precise pressure is critical for heavy touring stability. The front 130/80B17 requires 2.48 bar (36 psi), while the rear 180/65B16 must be maintained at 2.90 bar (42 psi) to prevent cupping and ensure heat dissipation during high-speed highway transit.
Electrical and Ignition
The ignition system utilizes 6R10 spark plugs. Given the high-compression nature of the 114ci engine, plug gap and heat range are vital for preventing pre-detonation. The electrical system is anchored by the 66000212 battery, a high-CCA (Cold Cranking Amp) unit designed to support the Boom!™ Box GTS infotainment system and the heavy starter draw of the large-displacement V-Twin.
FAQ
What is the recommended spark plug for the 2019 114ci Ultra?
The recommended spark plug is the 6R10, which is specifically designed to handle the thermal loads of the Milwaukee-Eight cylinder head design.
Can I use 10W40 oil in this motorcycle?
While 10W40 can be used in colder climates, SAE 20W50 is the standard recommendation for the FLHTK/L to provide adequate film strength at the operating temperatures typical of an air/oil-cooled V-twin.
What is the difference between the FLHTK and FLHTKL?
The FLHTK is the standard Ultra Limited, while the FLHTKL is the ‘Low’ version, featuring a lowered suspension and reach-optimized controls for riders needing a lower center of gravity.