No, not all Harley-Davidson motorcycles use belts instead of chains. While belts are commonly used in many Harley-Davidson models, especially in their cruiser and touring lineup, there are also Harley-Davidson motorcycles that use chain drive systems.
The choice between belt drive and chain drive often depends on the specific model and its intended purpose. Belt drives are known for their smooth and quiet operation, low maintenance requirements, and durability. They are commonly found in Harley-Davidson touring bikes like the Electra Glide and Street Glide.
On the other hand, chain drives are typically used in Harley-Davidson models that prioritize performance and a more traditional aesthetic. Chains can handle higher power outputs and are commonly found in Harley-Davidson Sportster models and some other cruiser-style motorcycles.
It's worth noting that Harley-Davidson's lineup can vary over time, and the specific models and technologies used may change. So, it's always a good idea to consult the latest information from Harley-Davidson or a reliable dealership to confirm the drive system used in a particular motorcycle model.