A liter bike is a motorcycle with an engine displacement of 1000 ccs. The term "liter" refers to the engines displacement, which is equivalent to one liter or 1000 milliliters. Liter bikes are high-performance sport or naked bikes with an engine displacement close to 1000 cc. However, it is rare for an engine to be exactly 1000 cc, so the term "liter bike" should not be taken literally. The Yamaha YZF-R1, for example, has a 998cc displacement. Anything designed for performance with an engine size somewhere between 900cc and 1100cc could be rightly called a liter bike.
Liter bikes are known for their speed and acceleration, and they are often used for racing. However, they are not recommended for inexperienced riders. It is important to gain rider experience before riding a high-performance liter bike.
