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YZ450FX YZ 450FX Head Studs Maxlock Heavy Duty Cylinder Upgrade Stud Bolt Kit



  • Chromoly case hardened head studs
  • 12 point flange nuts
  • Washers
  • Allen head studs for easier install
  • More torque
  • Stronger seal between cylinder and head
  • Can be reused over and over for the life of the engine

Using a stud/nut instead of a bolt makes a tighter, stronger seal.  These studs pay for themselves over time!  Everything is new in the original packaging and the original manufacturer's warranty applies*

Please check your order thoroughly when you receive it and contact us if you have any issues at all.   Thanks!!

*Lifetime relpacement warranty is against breakage or failure while engine is in use.  Does not cover studs broken during installation.  We recommend that this be installed by a qualified mechanic with experience doing this type of work.  Warranty does not cover any failure that is a result of improper installation, improper break in, improper tuning, or misuse.  For any warranty to be considered the part(s) in questions must first be sent to us for inspection.  We can not warranty anything based on phone calls or photos alone.