These are the bushings the fork tubes slide on, and as they wear the fork develops play and stiction you feel as harsh, vague front-end action. A fresh set restores smooth, controlled fork movement. Replace them alongside fresh fork seals and oil, and fit in pairs.

• Restores smooth, controlled fork action
• Cures play and stiction in the fork
• Fit in pairs with fresh seals and oil

Fits

• 1998-1999 Yamaha YZ400
• 1999-2000 Yamaha WR400F
• 2001-2002 Yamaha WR426F