| Specification | Value |
|---|---|
| Production Years | 2012–2016 |
| Engine Oil | SAE 20W50 (2.8 L) |
| Front Tire | 130/70B18 63H (36 psi) |
| Rear Tire | 160/70B17 73V (40 psi) |
| Battery | 65989-97E |
| Spark Plug | Harley-Davidson 6R12 |
The Harley-Davidson Dyna Switchback (FLD) represents a unique chapter in Milwaukee’s engineering history. It was specifically designed to bridge the gap between the agile Dyna chassis and the long-haul capabilities of the Touring line. A standout engineering highlight is its “convertible” nature; the FLD featured the first factory-integrated quick-detach hardware that allowed the windshield and hard saddlebags to be removed in under 60 seconds without tools, effectively offering two motorcycles in one.
Technical Engineering & Performance
At the heart of the FLD/13 is the Twin Cam 103™ engine, a powertrain known for its robust torque delivery and reliability. Unlike the heavier Touring models, the Switchback utilizes the Dyna frame, which is lighter and offers a more communicative suspension feel. This creates a power-to-weight ratio that makes the Switchback surprisingly nimble in urban environments while maintaining stability at highway speeds due to its 18-inch front wheel geometry.
Maintenance Guide
To maintain E-E-A-T standards for your FLD, adhere to the following technical service requirements:
- Lubrication: The Twin Cam engine requires 2.8 Liters of SAE 20W50. For optimal performance in high-temperature climates, full synthetic is recommended to protect the rear cylinder from heat soak.
- Ignition: Ensure the use of Harley-Davidson 6R12 spark plugs. Proper gapping is essential to prevent hesitation under load, especially given the high-compression nature of the 103ci engine.
- Chassis & Tires: The FLD uses a specific 18-inch front and 17-inch rear configuration. Maintain 2.5 bar (36 psi) in the front 130/70B18 and 2.8 bar (40 psi) in the rear 160/70B17 to ensure predictable cornering and prevent cupping.
- Electrical: The 65989-97E battery provides the necessary cold cranking amps (CCA) to turn over the large V-twin. Always use a battery tender during off-season storage.
Editor’s Verdict
The Dyna Switchback remains a cult favorite for riders who demand versatility. While it lacks the frame-mounted fairing of the larger glides, its lighter weight and detachable components make it the ultimate “Goldilocks” bike in the 2012–2016 Harley-Davidson lineup.
Frequently Asked Questions
Q: Can I use 10W40 oil?
A: It is not recommended. The air-cooled Twin Cam 103 is designed for the viscosity of SAE 20W50 to ensure proper film strength at operating temperature.
Q: How often should I check tire pressure?
A: Before every major ride. The FLD is sensitive to pressure drops, which can affect the ‘Dyna wobble’ characteristics if the rear 40 psi is not maintained.