| Specification | Value |
|---|---|
| Engine Oil | SAE 20W50 (2.8 L) |
| Front Tire | 100/90-19 57H (2.1 bar / 30 psi) |
| Rear Tire | 160/70B17 73V (2.5 – 2.8 bar / 36 – 40 psi) |
| Battery Model | 65989-97C |
| Spark Plug | 6R12 |
The 2007 model year represents a watershed moment for the Dyna platform. It was the inaugural year for the Twin Cam 96™ engine and the 6-speed Cruise Drive™ transmission across the entire Dyna line. This engineering shift eliminated the traditional 88-cubic-inch powertrain, providing a significant increase in torque and a much-needed overdrive gear for highway cruising, solidifying the FXDL as a premier long-distance cruiser with a low-slung aesthetic.
Engineering Overview
The FXDL/07 is defined by its low center of gravity and the rubber-mounted engine design. Unlike the Softail line, the Dyna’s engine is isolated from the frame via rubber mounts, allowing for a characteristic ‘shakedown’ at idle that smoothens into a refined vibration-free experience at cruising speeds. The 2007 update also brought Electronic Sequential Port Fuel Injection (ESPFI) as standard, improving cold-start reliability and throttle response.
Maintenance & Fluid Capacities
For optimal engine longevity, MotoSpecsLab recommends SAE 20W50 oil. The total refill capacity is 2.8 Liters. Because the Twin Cam 96 runs hotter than its predecessor, high-quality synthetic oil is advised to prevent thermal breakdown in heavy traffic or high-ambient temperatures.
Tires and Contact Patch
The FXDL utilizes a staggered wheel setup that balances agility with stability. The front 19-inch wheel (100/90-19) requires a consistent 30 psi (2.1 bar) to maintain steering precision. The rear 17-inch wheel (160/70B17) is more sensitive to load; while 36 psi (2.5 bar) is sufficient for solo riders, increasing to 40 psi (2.8 bar) is mandatory when carrying a passenger to prevent sidewall overheating and ensure tread longevity.
Electrical System
The 2007 FXDL relies on the 65989-97C battery. Given the high-compression nature of the 1584cc engine, maintaining a healthy Cold Cranking Amp (CCA) rating is critical. We recommend using a smart tender during the off-season. For ignition, the factory-spec 6R12 spark plugs remain the gold standard for preventing pre-detonation and ensuring complete combustion cycles.
Summary
The 2007 Dyna Low Rider is a mechanical bridge between the raw vibrations of the early Dynas and the modern refinement of the late-stage Twin Cams. By adhering to these technical specifications, owners can preserve the performance and value of this iconic Harley-Davidson model.