Cylinder Works
Cylinder Kits
Cylinder Works Big Bore Cylinders & Cylinder Kits With the exception of a mechanic, the Cylinder Works big bore kits provide everything you need to transform a bike or ATV from modest to monster in one box. In addition to the stock appearing, nickel silicon carbide plated, precision honed, big bore cylinder, each kit contaisn: All the nedded gaskets and seals to complete the installation, A Vertex forged big bore piston complete with piston rings, pin and circlips. Made in the USA The quality of a cylinder is only as good as the manufacturing. Each Cylinder Works cylinder is designed, machined, inspected for quality and matched to its components right at out home facility in Urbandale, Iowa.
Standard Cylinder Only
Standard Bore Cylinder Kit
Big Bore Cylinder Kit
SUZUKI Models 4-Stroke
Years cc.
Dia.
Part No.
cc.
Dia.
Part No.
cc.
Dia.
Part No. 56-K104
270 80mm +3mm Uses Vertex Piston Kit: 23405 270 80mm +3mm Uses Vertex Piston Kit: 23678 270 80mm +3mm Uses Vertex Piston Kit: 23679 270 80mm +3mm Uses Vertex Piston Kit: 23925 270 80mm +3mm Uses Vertex Piston Kit: 23925 270 80mm +3mm
.80.CKW
30001-K01**
RM-Z 250
2004 - 06 249 77mm
.77.CW 250 77mm
56-K104
.80.CKW
56-K129
40003-K01**
RM-Z 250
2007 - 09 249 77mm
.77.CW 249 77mm
56-K129
.80.CKW1
56-K148
40004-K01**
RM-Z 250
2010 - 12 249 77mm
.77.CW 249 77mm
56-K148
.80.CKW2
56-K148
RM-Z 250
2013 - 15 249 77mm
.77.CW 249 77mm
.77.CKW
56-K148
56-K148
.80.CKW2
56-K148
40004-K03**
RM-Z 250
2016 - 18 249 77mm
.77.CW 249 77mm
56-K148
CW41005K01**
RM-Z 250
2019 - 24 250 77mm
.77.CYW 250 77mm
.77.CKW
56-K1992
56-K1992
**Please note these items are By Order Only
Standard Cylinder Only
Standard Bore Cylinder Kit
Big Bore Cylinder Kit
YAMAHA
Models 2-Stroke
Years cc. 2002 - 18 85
Dia.
Part No. 56-K235 56-K132 56-K132 56-K156 56-K156
cc.
Dia.
Part No. 56-K235 56-K132 56-K132
cc.
Dia.
Oversize Part No.
YZ 85
47mm
.475.CYL.CW 85
47mm
.475.CK.CW 107 52mm +5mm
.525.CKW
56-K154
YZ 125
2005 - 21 125 54mm 2020 - 22 125 54mm 1999 - 25 250 66mm
.54.CW 125 54mm .54.CW 125 54mm .664.CYLCW 250 66mm
.54.CKCW .54.CKCW
YZ 125X
YZ 250 YZ 250
.664.CKCW 295 72mm +6mm
.72.CKCW
56-K156
56-K156
2026
250 66mm
.664.CYLCW
Cylinder Works Standard Bore Cylinder Head The Cylinder Works Standard Bore Cylinder Head is a precision-engineered replacement for YZ 250 models from 1999-2025. Designed to maintain factory specifications, this cylinder head ensures optimal engine performance and reliability. Specifications: Fits Models: YZ 250 (1999-2025) Includes: Standard Bore Cylinder Head Built for durability and performance, this Cylinder Works component is an ideal solution for maintaining or restoring your engine’s top-end efficiency. Part No. .664.CHD 56-K156
*Please visit our website for current prices E109
E-mail: sales@oro2u.com
www.oro2u.com
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