​​Product Name:​​ Cylinder Head
​​OE Replace Part Number:​​
● 5XC-11311-20-00
​​Compatible Models:​​
● For 2001-2013 Dirt Bike 250cc (WR/YZ Series)
● For 2001-2013 Motocross Bike 250cc (WR/YZ Series)
​​Package Including:​​
● 1 x Cylinder Head
​​Product Features:​​
● CNC-machined combustion chamber for 20% increased thermal efficiency and reduced hot spots.
● Reinforced aluminum alloy construction withstands extreme temperatures (-40°F to 600°F).
● Multi-layer steel valves improve airflow by 15% and extend valve life by 30,000+ miles.
​​Attention​​:
● Professional installation required to avoid gasket misalignment in high-rev engines (250cc models).
● Verify compatibility via the Fitment Bar tool for motocross bikes (older head bolt patterns may vary).
● Clean cooling passages thoroughly before assembly to prevent overheating.