It is generally recommended to replace the oil filter during each oil change for optimal performance and protection of your motorcycle's engine. Reusing the oil filter can lead to reduced filtration efficiency, as well as the potential for contaminants to be reintroduced into the engine oil.
While some riders may choose to reuse an oil filter for a single oil change if it appears to be in good condition, it is generally considered best practice to replace it with a new one. Oil filters are relatively inexpensive compared to the potential costs associated with engine damage caused by inadequate filtration.
To ensure the best performance and longevity of your Harley-Davidson Sportster, it is recommended to follow the manufacturer's guidelines and replace the oil filter with a new one during each oil change.