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  Home > MOTORCYCLE YAMAHA YZ250 1999-2019 BIG BORE >

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


 
List Price: $1,099.00
Our Price: $1,099.00

GAS


HEAD COLOR YAM


PORT DESIGN



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Description
 
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FITS YAMAHA YZ250 1999 TO 2019 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. THIS KIT WILL WORK WITH STOCK PIPE AND AFTERMARKET PIPES BUT FOR BEST RESULTS THE ESR PIPE WORKS THE BEST

Recommended jetting
162/168 main
stock needle
stock low speed

Works good with stock pipe or aftermarket and stock carb.
ESR YZ250 IS THE BEST
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

ESR 345 kit


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MOTORCYCLE YAMAHA YZ250 1999-2019 BIG BORE