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YZ250 325 BIG BORE KIT
yz250  1999 2000 2001 2002 2003 2004 yz250 top end rebuild kit yz250 cylinder yz 250 big bore kit yz250 big bore kit 2 stroke  big bore kit yz250 yz250 big bore kits yamaha yz 250 cylinder yz 250 engine 	
yz 250 piston


 
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Our Price: $634.00

GAS


HEAD COLOR YAM


PORT DESIGN



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Features
 
ESR 345 kit
Features
  • PLEASE READ
    SHOP CELL 805-440-1063 OR TEXT TO THIS PHONE TO GET A CALL BACK
    FITS YAMAHA YZ250 1999 TO 2020 YEARS AND X MODEL

    NO CASE WORK NEEDED WILL BOLT ON
    STOCK CARBURETOR WORKS GOOD
    STOCK PIPE OR AFTERMARKET IS FINE

    THIS KIT COMES WITH THE CYLINDER, HEAD, PISTON, POWER VALVE ,AND GASKETS 75.5MM .HAS GREAT POWER AND SMOOTH POWER .THE POWER IS VERY EASY TO CONTROL THE POWER VALVE OPENS A LITTLE LATER TO MAKE IT EASY TO RIDE ON A SLICK TRACKS . THE POWER VALVE IS ADJUSTABLE IT HAS A BOLT TO ADD SPRING PRESSURE . THE PISTON SIZE IS 75.5 WITH 4 OVER SIZES AVAILABLE.

    Recommended jetting
    162/168 main
    stock needle
    stock low speed
    https://www.youtube.com/watch?v=q-1dUVEnKog

    http://youtu.be/ijKMclEPj9o

    EMAIL FOR QUESTIONS sanders_e@sbcglobal.net

    Porting S8 SMOTHER AND MORE POWER THAN STOCK

    KIT INCLUDES

    NEW CYLINDER (NO EXCHANGE)
    NEW HEAD PUMP FUEL OR RACE FUEL
    PISTON RINGS PIN CLIPS (NO BEARING USES OEM YAMAHA)
    POWER VALVE
    BASE GASKET
    2 HEAD O RINGS SETS
    CYLINDER, HEAD NUTS AND WASHERS

    INSTALLATION IS JUST LIKE DOING A TOP END REBUILD
    HEAD TORQUE 18 LBS
    CYLINDER BASE 35 LBS



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2 STROKE MOTORCYCLE > MOTORCYCLE YAMAHA YZ250 1999-2019 BIG BORE