High Performance Valve Guides for Yamaha YFZ 450R (03-08)

Intake • OD: .3955" (10.05mm) • ID: 4.5mm
Exhaust • OD: .3956" (10.05mm) • ID: 5.0mm

• Manganese Bronze alloy allows tighter clearances for better
  heat transfer
• Tapered and radiused nose for easier installation and better air flow
• Unique Super Grip valve seal section
• CNC machined
• Ready to be reamed to size with our carbide reamers in SAE and
  metric sizes