Front Fork Oil Seals for 2 x 1 - NOK Top manufacturer of oil seals. Made in Japan. The inferior seal overseas has the worst quality and precision of rubber and even when used in the correct process. The operation will become unusually hard, and the oil will leak immediately. We recommend reliable Japan for important parts ■ Compatible models ■ 1982-1983 For CBX400F-1-2 For CBX550F 1983-1985 CBR400F-1 For CB750FZ/CB750FA/CB750FB CBR400F-2 1979-1981 The inner tube size is only for 1.4 inches (35 mm) diameter. Not compatible with CBR400F3/CB750FC.