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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Engine Type: Gen III/IV
This will offer proper warm-up with coolant flowing from block to head while the thermostat is closed (same as OEM design)
under-steer
and you'll hit the ideal boost rate for your desired HP
Yamaha YFZ450 YFZ 450 Stronger Heavy Duty Cylinder Head Studs Bolts k series Engine Type: Gen III/IVFeatures: Nuts Are Machined From Billet High Tensile Steel And Heat Treated Studs Are Heat Treated 180,000 PSI Aircraft Alloy Steel Both Nut And Stud Have Rolled Threads For The Strongest Possible Threads Both Nut And Stud Are Black Oxide Treated For Enhanced Corrosion Resistance 12 Point Chromoly Head Nuts Increased Torque To 35 Foot Pounds No Drilling Or Tapping Required Fitment: fit for Yamaha YFZ450 Carb Models 2004 2005 2006 2007 2008 2009 2010