Redline Powersports Share: Auto Dealers/ Sales & Repairs Redline Powersports Visit Website Request Info 4663 Highway 501 Myrtle Beach, SC 29579 (843) 236-0758 About Map About SC's largest Powersports & Marine Dealer offering 19 brands under one roof! We sell and service Motorcycles, ATVs, Side by Sides, Boats, Personal Watercraft, Off Road Dirt Bikes, and more! What's Nearby? Distance: 5 10 15 20 25 50 mi.