Tips

2002-2012 Yamaha YZ 85 Head Modification

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The cylinder head must be modified as shown in the drawing below. Failure to modify the head will result in engine damage.

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Cylinder Installation Requirements

For 2004-2005 Kawasaki KX 250F

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CRF250 Big Bore Case Modification

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2002-2012 Yamaha YZ 85 Head Modification

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Solutions for Some of Your Most Common Dilemmas

Solutions for Some of Your Most Common Dilemmas

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YZ 250 (1999-2016) Service Bulletin

Cylinder installation on YZ 250 (1999-2016)

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