Fans of Polaris Industries Inc.'s Victory Motorcycles might want to move quickly if they want a new bike. The Medina-based maker of motorcycles and all-terrain vehicles announced it's winding down the Victory brand effective immediately to concentrate on its better-performing Indian Motorcycles business. Polaris (NYSE: PII) said it will assist dealerships in liquidating inventory and will supply parts for another 10 years and honor warranties in place. "This was an incredibly difficult decision...