Yamaha Motor India Private Ltd would launch three new bikes in India including Gladiator Type SS and RS (125 cc), YZF- R15 (150 cc, liquid cooled) and FZ (150 cc, air-cooled) this year. The company also plans to invest Rs 700-800 crore in the country to go into product development, marketing and manufacturing, indicated P Sam, group head, marketing and sales, Yamaha Motor India Sales Pvt Ltd.