Honda TRX 400EX
Advanced Machining Services Honda 400EX performance page. A vast array of OEM and aftermarket parts for your 400EX. 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 400EX engine rebuilds, crank replacement, transmission repair. Box it up and ship it.

Advanced Machining Services LLC, 23 years engine building.
400EX cylinder kits
400EX cylinder kit
  • Bore & Hone cylinder service
  • Wiseco Piston kit 10:1 compression
$219.00
CYLINDER NOT INCLUDED

400EX 440 Big Bore cylinder kit

  • Bore & Hone cylinder service
  • 440 sleeve
  • sleeve installation
  • Wiseco Piston kit
  • Top end gasket set
$439.00
CYLINDER NOT INCLUDED
400EX 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 below prices

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

add $415.00 to below prices
400EX Head Kits

400EX stock head kit

  • Multi-angle valve job
  • cut valves
  • valve springs checked
  • new valve stem seals
  • valve guides checked
  • gasket surfaces prepped
$219.00
HEAD NOT INCLUDED

400EX Hi-performance head kit Stage I

  • Stage I porting
  • Kibblewhite Black Diamond valves
  • Stage I Hotcam
  • Multi-angle valve job
  • valve guides checked
  • valve springs checked
  • new valve stem seals
  • gasket surfaces prepped
$619.00
HEAD NOT INCLUDED

400EX Hi-performance head kit Stage II

  • Stage II porting
  • 1mm over Kibblewhite Black Diamond valves
  • Stage II Hotcam
  • Kibblewhite spring kit
  • CDI revbox
  • Multi-angle valve job
  • valve guides checked
  • new valve stem seals
  • gasket surfaces prepped
$944.00
HEAD NOT INCLUDED
400EX Top End kits

400EX stock Top End kit

  • Bore & Hone cylinder service
  • Wiseco piston kit 10:1
  • Multi-angle valve job
  • new valve stem seals
  • valves cut
  • valve springs checked
  • valve guides checked
  • gasket surfaces prepped
$419.00
CYLINDER & HEAD NOT INCLUDED

400EX Hi-performance top end kit Stage I

  • Bore & Hone cylinder service
  • Wiseco Piston kit
  • Stage I porting
  • Kibblewhite Black Diamond valves
  • Stage I Hotcam
  • Multi-angle valve job
  • valve guides checked
  • valve springs checked
  • new valve stem seals
  • gasket surfaces prepped
$819.00
CYLINDER & HEAD NOT INCLUDED

400EX Hi-performance top end kit Stage II

440 Big Bore

  • Bore & Hone cylinder service
  • 440 sleeve installed
  • Wiseco Piston kit
  • Stage II porting
  • 1mm over Kibblewhite Black Diamond valves
  • Stage II Hotcam
  • Kibblewhite spring kit
  • CDI revbox
  • Clutch kit
  • Multi-angle valve job
  • valve guides checked
  • new valve stem seals
  • gasket surfaces prepped
$1429.00
CYLINDER & HEAD NOT INCLUDED
400EX 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 above prices

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

add $415.00 to above prices
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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HOURS OF OPERATION

Monday thru Friday 9:00 to 5:30 EST

Saturday 9:00 to 1:00 EST

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