The term TRIATHLON GEAR can be broken down into two crossword solutions: BIKE (4 letters) and WETSUIT (7 letters). A BIKE is a two-wheeled vehicle used for transportation, recreation, or racing. It is an essential piece of equipment for a triathlete, as it is used in the cycling portion of the race. A wetsuit is a tight-fitting garment made of neoprene that is designed to keep a swimmer warm in cold water. It is also an important piece of gear for a triathlete, as it is used in the swimming portion of the race.