ORO2U Dirt Catalogue - Section E - Engine and Performance.

Cylinder Works

Cylinder Kits

YAMAHA

YZ 250F 2014-2018 YZ 250FX 2015-2017 WR 250F 2015-2018

Image

Part No.

Description

cc.

Ø mm

Cylinder Standard Bore (Cylinder Only)

56-K170.77.CW

249

77

Cylinder kit Big Bore +3mm (Cylinder, gaskets, piston kit)

56-K170.80.CKW

269

80

23943A

Piston kit Compression 13.5:1

79.95

23943B

Piston kit Compression 13.5:1

79.96

56-K170.80.GKW Gasket Kit

YZ 450F 2003-2005 WR 450F 2003-2006

Image

Part No.

Description

cc.

Ø mm

Cylinder Standard Bore (Cylinder Only)

56-K114.95.CW

449

95

22915A

Piston kit Compression 12.5:1

94.93

22915B

Piston kit Compression 12.5:1

94.94 94.95

22915C

Piston kit Compression 12.5:1

Cylinder kit Big Bore +3mm (Cylinder, gaskets, piston kit)

56-K114.98.CKW

478

98

23404A

Piston kit Compression 12.5:1

97.96

23404B

Piston kit Compression 12.5:1

97.97

56-K114.98.GKW Gasket Kit

YZ 450F 2006-2009 WR 450F 2007-2015

Image

Part No.

Description

cc.

Ø mm

Cylinder Standard Bore (Cylinder Only)

56-K108.95.CW

449

95

22915A

Piston kit Compression 12.5:1

94.93

22915B

Piston kit Compression 12.5:1

94.94 94.95

22915C

Piston kit Compression 12.5:1

Cylinder kit Big Bore +3mm (Cylinder, gaskets, piston kit)

56-K108.98.CKW

478

98

23404A

Piston kit Compression 12.5:1

97.96

23404B

Piston kit Compression 12.5:1

97.97

56-K108.98.GKW Gasket Kit

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