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  Home > MOTORCYCLE YAMAHA YZ250 1999-2015 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: $999.00
Our Price: $1,099.00
Sale Price: $839.00
You save $160.00!

GAS

  
HEAD COLOR YAM

  
PORT DESIGN

  

Qty:
Description
 
YZ 250 1999 to 2018 and X model
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 .IT ALSO HAS A JET TO RELEASE AIR PRESSURE . THE BIGGER JET MAKES IT HIT HARDER . THE SMALLER ONE COMES ON SMOOTHER THIS KIT HAS A 75.5.MM PISTON. IT HAS FIVE OVER SIZE BORES 76, 76.5, 77, 77.5, 78 MM. IT CAN ALSO BE RE SLEEVED . PUMP FUEL OR RACE FUEL ( WE HAVE 93 DOMES AND RACE FUEL DOMES )
.CYLINDER COOLANT VOLUME IS INCREASED 30%. HEAD COOLANT VOLUME INCREASED 40% THIS KIT WORKS FINE WITH THE STOCK PIPE AND STOCK CARB

Recommended jetting PRICE 839.00
162/168 main
stock needle
stock low speed

Works good with stock pipe or aftermarket and stock carb.

http://youtu.be/ijKMclEPj9o

HOT LINE 805-440-1063 FOR QUESTIONS

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 1999-2015 BIG BORE