Honda CRF450

Advanced Machining Services Honda CRF450 performance page. A vast array of OEM and aftermarket parts for your CRF450. 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, Honda CRF450 engine rebuilds, crank replacement, transmission repair. Box it up and ship it.

Advanced Machining Services LLC, 23 years engine building.


CRF450 cylinder kits
compression ratio
11.5:1 $289.00
CRF450 cylinder kit
  • Hone cylinder
  • Wiseco Piston kit
  • JE & CP available
  • Top end gasket set
  • gasket surfaces prepped
    12.0:1 $299.00
    12.5:1 $314.00
    13.0:1 $329.00
    CYLINDER NOT INCLUDED

    CRF450 Nikasil cylinder kit
    • Nikasil cylinder
    • Wiseco Piston kit
    • JE & CP available
    • Top end gasket set
    • gasket surfaces prepped
    11.5:1 $429.00
    12.0:1 $449.00
    12.5:1 $454.00
    13.0:1 $479.00
    CYLINDER NOT INCLUDED

    CRF450 Big Bore 500 cylinder kit
    • Athena Nikasil cylinder
    • Athena Piston kit
    • Top end gasket set
    • +4mm 100mm bore
    • gasket surfaces prepped
    CYLINDER INCLUDED
    11.6:1 $849.00

    CRF450 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


    CRF450 Head Kits
    CRF450 stock head kit
    • Multi-angle valve job
    • 4 replacement OEM valves
    • new valve springs
    • valve guides checked
    • new valve stem seals
    • gasket surfaces prepped
    $399.00
    HEAD NOT INCLUDED

    CRF450 Hi-performance head kit Stage I

    • Stage I porting
    • Stage I Hotcam
    • 4 Kibblewhite valves
    • Spring kit
    • Multi-angle valve job
    • valve guides checked
    • new valve stem seals
    • gasket surfaces prepped
    $929.00
    HEAD NOT INCLUDED

    CRF450 Hi-performance head kit Stage II

    • Stage II porting
    • Stage II Hotcam
    • 4 Kibblewhite valves
    • Spring kit
    • Multi-angle valve job
    • valve guides checked
    • new valve stem seals
    • gasket surfaces prepped
    $1029.00
    HEAD NOT INCLUDED

    CRF450 Top End kits

    CRF450 stock head kit

    • Multi-angle valve job
    • stock replacement OEM valves
    • new valve springs
    • valve guides checked
    • new valve stem seals
    CFR450 cylinder kit
    • Hone cylinder
    • Wiseco Piston kit
    • JE & CP available
    • Top end gasket set
    • gasket surfaces prepped
    12.5:1 $689.00
    CYLINDER & HEAD NOT INCLUDED

    CRF450 top end kit Stage I

    • Hone cylinder
    • Wiseco Piston kit
    • JE & CP available
    • Stage I porting
    • Stage I Hotcam
    • 4 Kibblewhite valves
    • Spring kit
    • Top end gasket set
    • Multi-angle valve job
    • new valve stem seals
    • valve guides checked
    • gasket surfaces prepped
    12.5:1 $1219.00
    CYLINDER & HEAD NOT INCLUDED

    CRF450 top end kit Stage II

    • Wiseco Piston kit
    • JE & CP available
    • Hone cylinder
    • Stage II porting
    • Stage II Hotcam
    • 4 Kibblewhite valves
    • Spring kit
    • Top end gasket set
    • Multi-angle valve job
    • valve guides checked
    • new valve stem seals
    • gasket surfaces prepped
    13:1 $1349.00
    CYLINDER & HEAD NOT INCLUDED

    CRF450 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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