This review thread show it uses a 20A brushless ESC that has BEC, so any brushless ESC rated as 20A or above with BEC will do. There are many on the market, you could contact your local hobby shop, your favorite mail order hobby supplier, eBay etc.
= JPower Sky Surfer ARF Review
Edit: Woops!, re-read your post, 'brushed' motor ?, I assumed initially it was a brushless. So as above BUT a brushed ESC.