Final answer:
The company that introduced fiberglass skis, named after a high mountain and the Kirschner brothers, is K2 Sports. This brand is synonymous with innovative ski technology and high performance.
Step-by-step explanation:
The company that introduced fiberglass skis, named for a very high mountain and after brothers Bill and Don Kirschner, is K2 Sports. Known for its innovative approach to ski technology, K2 Sports revolutionized the skiing industry by introducing fiberglass skis, which offered improved performance over the wooden skis that were commonly used at the time. The company's name is an allusion to the second-highest mountain on Earth, K2, reflecting the brand's aim for high performance and adventure.