| Specification | Data |
|---|---|
| Model Range | 2014 – 2020 |
| Engine Type | Air-cooled, Evolution® V-Twin |
| Oil Type / Capacity | SAE 20W50 (2.8 L) |
| Front Tire | 120/70 ZR18 |
| Rear Tire | 150/70 ZR17 |
| Tire Pressure (F/R) | 2.48 bar (36 psi) / 2.90 bar (42 psi) |
| Battery Part No. | 65958-04C |
| Spark Plug | HD-6R12 |
At MotoSpecsLab, we evaluate motorcycles through the lens of engineering efficiency and longevity. A unique engineering highlight of the XL1200T SuperLow is its specific frame geometry and suspension calibration, designed to provide a touring-capable platform with the lowest possible center of gravity in the Sportster lineup. Unlike standard XL models, the ‘T’ variant was the first to offer factory-integrated touring amenities—detachable windshields and locking saddlebags—without compromising the 705mm seat height that defines the SuperLow series.
Engineering Overview
The heart of the XL1200T is the 1202cc Evolution engine, a mill known for its aluminum heads and cylinders which improve cooling efficiency compared to older iron-head designs. The powertrain is rubber-mounted within the frame to mitigate the high-frequency vibrations inherent in a 45-degree V-twin, ensuring that long-distance touring remains comfortable for the rider.
Maintenance Essentials
Proper lubrication is the lifeblood of the Evolution engine. The XL1200T utilizes a dry-sump oiling system requiring 2.8 liters of SAE 20W50. Given the air-cooled nature of this engine, thermal breakdown of the oil is a primary concern; we recommend high-quality synthetic fluids to maintain viscosity under high-load touring conditions.
The ignition system relies on HD-6R12 spark plugs. During routine inspections, technicians should look for consistent tan coloration on the porcelain insulator, which indicates optimal stoichiometric combustion. The electrical system is anchored by the 65958-04C battery, which must be maintained with a tender during off-season storage to prevent the sulfation common in high-compression V-twin starters.
Chassis and Handling
The XL1200T features a unique wheel combination: an 18-inch front and a 17-inch rear. This sizing is critical for the bike’s ‘SuperLow’ handling characteristics. Maintaining precise tire pressure is non-negotiable for safety and tire longevity. The front 120/70 ZR18 should be set to 2.48 bar (36 psi), while the rear 150/70 ZR17 requires 2.90 bar (42 psi) to support the additional weight of luggage and potential passengers.
MotoSpecsLab Verdict
The Harley-Davidson XL1200T represents a masterclass in niche engineering. By combining the accessibility of the Sportster chassis with the utility of a light tourer, Harley-Davidson created a machine that is as technically reliable as it is approachable. Following the prescribed maintenance intervals for fluids and pressures will ensure this Evolution-powered cruiser remains on the road for decades.