Turnigy TrackStar Waterproof 1/8 Brushless Power System 2100KV/120A

Im working on a project converting my 1/8 truggy into electric. Im planning to buy Turnigy TrackStar Waterproof 1/8 Brushless Power System 2100KV/120A. From what i can see many people hd issues with the esc. If i face the some problems will you replace any faulty parts?