Yamaha YZ450F
Advanced Machining Services Yamaha YZ450F performance page. A vast array of OEM and aftermarket parts for your YZ450F. Head kits, Cylinder kits, Engine kits, seats and guides replaced, cams, valves and spring kits, multi angle valve jobs, oversized valves installed, porting, big bore head mods., cylinder boring/honing, big bore kits. Advanced Machining Services, Yamaha YZ450F engine rebuilds, crank replacement, transmission repair. Box it up and ship it.

Advanced Machining Services LLC, 23 years engine building.
YZ450F cylinder kits
YZ450F cylinder kit
  • Hone cylinder
  • Piston kit
  • Top end gasket set
  • gasket surfaces prepped
12.5:1 Compression $249.00
13.5:1 Compression
CYLINDER NOT INCLUDED
YZ450F 450 cylinder kit
  • Nikasil cylinder
  • Piston kit
  • Top end gasket set
  • gasket surfaces prepped
12.5:1 Compression $459.00
13.5:1 Compression
CYLINDER NOT INCLUDED
YZ450F Big Bore 470 cylinder kit
  • Bore & Nikasil cylinder
  • Piston kit
  • Top end gasket set
  • gasket surfaces prepped
$479.00
13:1 Compression
CYLINDER NOT INCLUDED

Yamaha YZ450F motor jobs

Don’t want to dig into the motor, no problem, box it up and ship it.

We’ll do the top end (head & cylinder) set valve lash,

cam timing, install new piston kit

add $189.00

To split the case (crank & transmission work) includes top end,

add $415.00
YZ450F Head Kits
YZ450F head kit
  • Multi-angle valve job
  • 5 stock replacement OEM valves
  • new valve springs
  • valve guides checked
  • new valve stem seals
  • valve lash set
  • gasket surfaces prepped
$699.00
HEAD NOT INCLUDED

YZ450F Hi-performance head kit Stage I

  • Stage I porting
  • Stage I Hotcams
  • 5 Kibblewhite valves
  • valve spring kit
  • Multi-angle valve job
  • valve guides checked
  • valve lash set
  • new valve stem seals
  • gasket surfaces prepped
$1119.00
HEAD NOT INCLUDED

YZ450F Hi-performance head kit Stage II

  • Stage II porting
  • Stage II Hotcams
  • 5 Kibblewhite valves
  • valve spring kit
  • Multi-angle valve job
  • valve guides checked
  • new valve stem seals
  • valve lash set
  • gasket surfaces prepped
$1249.00
HEAD NOT INCLUDED
YZ450F Top End kits

YZ450F head kit

  • Multi-angle valve job
  • 5 stock replacement OEM valves
  • new valve springs
  • valve guides checked
  • new valve stem seals
  • valve lash set
YZ450F cylinder kit
  • Piston kit
  • Hone cylinder
  • Top end gasket set
  • gasket surfaces prepped
$919.00
CYLINDER & HEAD NOT INCLUDED

YZ450F Hi-performance top end kit Stage I

  • Piston kit
  • Hone cylinder
  • Stage I porting
  • Hotcams intake and exhaust
  • 5 Kibblewhite valves
  • Kibblewhite valve spring kit with titanium retainers
  • Top end gasket set
  • Multi-angle valve job
  • valve guides checked
  • valve lash set
  • new valve stem seals
  • gasket surfaces prepped
$1349.00
CYLINDER & HEAD NOT INCLUDED

YZ450F Hi-performance top end kit Stage II

  • Piston kit
  • Hone cylinder
  • Stage II porting
  • Combustion Chamber mod.
  • Hotcams intake and exhaust
  • 5 Kibblewhite valves
  • Kibblewhite valve spring kit with titanium retainers
  • Top end gasket set
  • Multi-angle valve job
  • valve guides checked
  • valve lash set
  • new valve stem seals
  • gasket surfaces prepped
$1479.00
CYLINDER & HEAD NOT INCLUDED

Yamaha YZ450F motor jobs

Don’t want to dig into the motor, no problem, box it up and ship it.

We’ll do the top end (head & cylinder) set valve lash,

cam timing, install new piston kit

add $189.00

To split the case (crank & transmission work) includes top end,

add $415.00
Listed above is a selection of our more popular kits. You may have some of these parts, or, have some of this work done. We can custom tailor a kit to your specific needs. Give us a call for an estimate, and, Thanks for stopping by…hope to hear from you soon.

Advanced Machining Services LLC

5 Main St. Mount Carmel, PA 17851

570-339-5898

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Monday thru Friday 9:00 to 5:30 EST

Saturday 9:00 to 1:00 EST

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