The cost of having a shop tighten a motorcycle chain can vary depending on various factors, including the location, the specific shop, and the type of motorcycle. In general, the cost of this service can range from $20 to $50, but it could be higher in some cases.
It's worth noting that some motorcycle shops may charge an hourly labor rate, while others may have a fixed fee for chain adjustments. Additionally, if the chain requires further maintenance, such as cleaning, lubrication, or replacement, the cost may increase accordingly.
To get an accurate estimate for your specific situation, I recommend contacting local motorcycle repair shops or dealerships and inquiring about their pricing for chain tightening or adjustments. They will be able to provide you with the most up-to-date information based on your location and the make and model of your motorcycle.