BETA TECHNO 250 2T 1994. BETA TECHNO 250 2T 1995. BETA TECHNO 250 2T 1996. BETA TECHNO 250 2T 1997. BETA TECHNO 250 2T 1998. Oil Seal: Prevents oil leakage from the fork. Dust Scraper: Acts as the first line of defence against dirt entering the fork, protecting internal components.