
| Component | Specification |
|---|---|
| Engine Type | Evolution® V-Twin 1202cc (Euro 4) |
| Oil Grade | SAE 20W50 |
| Oil Capacity | 2.1 Liters |
| Front Tire | 120/70 ZR18 (2.5 bar / 36 psi) |
| Rear Tire | 150/70 ZR17 (2.9 bar / 42 psi) |
| Spark Plugs | HD-6R12 |
| Battery Type | 65958-04C |
Engineering Highlight: The XL1200T “SuperLow” was a pivotal engineering pivot for Harley-Davidson, marking the first time the Sportster chassis was specifically re-engineered with a reduced center of gravity and recalibrated suspension travel to accommodate factory-fitted touring luggage without compromising the lean-angle geometry of the 1200cc platform.
Technical Overview
The Harley-Davidson Sportster 1200 SuperLow (XL1200T/17), produced between 2014 and 2020, represents the pinnacle of the Euro 4 compliant Evolution engine era. Unlike standard Sportsters, the ‘T’ designation indicates a touring-ready configuration. From a mechanical standpoint, the 1202cc air-cooled V-Twin delivers its peak torque at a low 3,750 RPM, necessitating a robust lubrication system and precise ignition timing.
Maintenance Protocols
Lubrication System
For optimal thermal stability in the air-cooled Evolution engine, SAE 20W50 oil is mandatory. The system requires 2.1 Liters. At MotoSpecsLab, we recommend synthetic blends for Euro 4 models to mitigate the higher operating temperatures associated with leaner fuel mapping.
Tires and Chassis Dynamics
The SuperLow features a unique wheel combination compared to its Iron 1200 siblings. It utilizes a 120/70 ZR18 front and a 150/70 ZR17 rear. Maintaining precise pressure is critical for handling: 2.5 bar (36 psi) in the front and 2.9 bar (42 psi) in the rear. Under-inflation leads to sluggish turn-in and increased tire wear on the heavy rear-end.
Electrical and Ignition
The XL1200T utilizes the 65958-04C battery, known for its high Cold Cranking Amps (CCA) required to turn over the high-compression V-Twin. For ignition, the HD-6R12 spark plugs are the factory standard; these should be inspected every 8,000 km for carbon fouling, especially in urban riding conditions.
FAQ
What is the oil capacity for a 2017 Sportster 1200 SuperLow?
The total refill capacity is 2.1 liters of SAE 20W50.
Which battery fits the XL1200T?
The specific OEM part number is 65958-04C.
What are the tire pressures for touring?
Even when loaded with saddlebags, the recommended pressures are 2.5 bar (front) and 2.9 bar (rear).