The term COKE RIVAL can be summarized by two crossword solutions: Pepsi (5 letters) and RC Cola (6 letters). Pepsi is a carbonated soft drink produced and manufactured by PepsiCo. It was first introduced in 1893 and has since become one of the most popular soft drinks in the world. RC Cola, or Royal Crown Cola, is another carbonated soft drink that was first introduced in 1905. It is now owned by the Dr Pepper Snapple Group and is also widely consumed. Both Pepsi and RC Cola are major competitors to Coca-Cola, hence why they are referred to as Coke rivals.