Combine brown sugar, bourbon, soy sauce, lime juice, garlic, and ginger in a bowl.
Mix until the sugar dissolves completely.
Set the salmon fillets in a large zip-top plastic bag.
Pour the marinade over the salmon and seal the bag.
Refrigerate and marinate the salmon for about 4 hours, allowing the flavors to meld.
You can also marinate overnight for a richer flavor.
Preheat your grill to medium-high heat.
Remove the salmon from the marinade and pat it dry with paper towels.
Brush olive oil on the grill grates to prevent sticking.
Place the salmon fillets on the grill.
Cook for about 4-5 minutes per side or until cooked through.