| Component | Specification |
|---|---|
| Engine | Milwaukee-Eight® 117 V-Twin (1,923cc) |
| Oil Type / Capacity | SAE 20W-50 / 4.5 L |
| Front Tire | 130/60B21 63H |
| Rear Tire | 240/40R18 79V |
| Spark Plugs | 6R10 (x4) |
| Battery | 66000207 (AGM) |
The 2023 Harley-Davidson Breakout 117 (FXBRS) represents a significant engineering milestone: it marks the return of the iconic long-and-low silhouette to the North American market, now powered by the Milwaukee-Eight 117 engine—the largest factory-installed displacement previously reserved for CVO (Custom Vehicle Operations) models. This iteration features a heavy breather intake and a larger 5-gallon fuel tank, addressing the range limitations of its predecessor.
Engineering Overview: The Milwaukee-Eight 117
At the heart of the FXBRS/23 is the 117 cubic inch V-Twin, utilizing a precision oil/air cooling system. Unlike the standard 114, the 117 employs a high-performance camshaft and a high-flow intake to maximize volumetric efficiency. From a technical standpoint, the engine produces roughly 101 HP and 123 ft-lb of torque, requiring strict adherence to lubrication standards to manage the thermal loads of such a high-displacement air-cooled unit.
Maintenance & Lubrication
For optimal performance, MotoSpecsLab recommends SAE 20W-50 synthetic motorcycle oil. The total system capacity is 4.5 Liters. Given the high-torque output, primary chaincase and transmission fluids should be inspected every 5,000 miles. The use of the 6R10 spark plugs (two per cylinder) is critical for maintaining the specific flame kernel required for the 117's combustion chamber geometry.
Chassis and Tire Dynamics
The Breakout is defined by its massive 240mm rear tire. Handling this width requires precise air pressure management to avoid "squaring off" the profile. We recommend maintaining 2.9 bar (42 psi) in the rear and 2.5 bar (36 psi) in the 21-inch front wheel. The front 130/60B21 tire provides the necessary stability for the rake angle, though it requires higher steering input at low speeds compared to standard Softail models.
Electrical System
The FXBRS/23 utilizes the 66000207 battery. Due to the high compression ratio of the 117 engine, maintaining a healthy Cold Cranking Amp (CCA) rating is essential. If the bike is stored for more than two weeks, a dedicated AGM-compatible tender should be used to prevent voltage drop, which can lead to ECU fault codes during the start-up sequence.
Frequently Asked Questions (FAQ)
Q: What is the recommended service interval for the air filter?
A: The Heavy Breather intake uses a washable element. It should be inspected every 5,000 miles and cleaned/re-oiled more frequently in dusty environments.
Q: Can I use 10W-40 oil?
A: Only in emergency situations and for short durations. The 117 CUI engine operates at high temperatures; SAE 20W-50 provides the necessary shear stability required for the V-Twin architecture.