Yamaha Raptor 250

Advanced Machining Services Yamaha Raptor 250 performance page. A vast array of OEM and aftermarket parts for your Raptor 250. 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 Raptor 250 engine rebuilds, crank rebuilds, transmission repair. Box it up and ship it.

Advanced Machining Services LLC

Building performance engines since 1986


Raptor 250 cylinder kits
Raptor 250 cylinder kit
  • Clean & Hone cylinder
  • Lap head gasket surface
  • Wiseco Piston kit
  • Top end gasket set
  • Set ring end gap
$269.00
11:1 high compression piston
CYLINDER NOT INCLUDED

Raptor 250 Big Bore 265 Kit
  • Clean cylinder
  • Bore to 76 mm
  • Replate cylinder
  • Lap head gasket surface
  • JE Piston kit
  • Set ring end gap
  • Top end gasket set
$499.00
10.5:1 or 12:1 compression piston
CYLINDER NOT INCLUDED

Raptor 250 Big Bore 270 cylinder kit
  • Clean cylinder
  • Bore to 77 mm
  • Replate cylinder
  • Lap head gasket surface
  • CP Piston kit
  • Top end gasket set
  • Set ring end gap
  • 11:1 or 12.5:1 compression
$519.00
11:1 or 12.5:1 compression piston
CYLINDER NOT INCLUDED

Raptor 250 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 $249.00

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

add $475.00


RAPTOR 250 VALVE JOB KITS

RAPTOR 250 STOCK VALVE JOB KIT

SERVICES INCLUDE

  • Disassembly and Asessembly
  • Clean
  • Cut seats multi-angle
  • Cut your stock valves
  • Check guides and springs
  • Lap head gasket surface
  • New valve stem seals
  • Cam removed and reinstalled
  • Valve lash set

If we find problems with the valves, guides, or any other items during the disassembly/inspection, we will contact you with a corrective course of action.

Kit price $189.00

Add 2 Stainless steel valves to the kit for a price of
$239.00

RAPTOR 250 HIGH PERFORMANCE STAGE 1 VALVE JOB/HEAD KIT
This kit includes the above kit with the stainless steel valves and we are adding to it
  • Stage 1.5 porting
  • Intake matching
$359.00

RAPTOR 250 HIGH PERFORMANCE STAGE 2 VALVE JOB/HEAD KIT
And as before this kit includes the above kit with the stainless steel valves and
  • Stage 2 porting
  • Intake matching
  • Hotcam stage 1, 2, or 3 your choice
$499.00

Raptor 250 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 $249.00

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

add $475.00b


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

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5 Main St. Mount Carmel, PA 17851

570-339-5898

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Monday thru Friday 9:00 to 5:30 EST

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Prices subject to change without notice.