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.
270 80mm +3mm 56-K104.80.CKW Uses Vertex Piston Kit: 23405 270 80mm +3mm 56-K129.80.CKW Uses Vertex Piston Kit: 23678 270 80mm +3mm 56-K148.80.CKW1 Uses Vertex Piston Kit: 23679 270 80mm +3mm 56-K148.80.CKW2 Uses Vertex Piston Kit: 23925 270 80mm +3mm 56-K148.80.CKW2 Uses Vertex Piston Kit: 23925
30001-K01**
RM-Z 250
2004 - 06 249 77mm 56-K104.77.CW 250 77mm
40003-K01**
RM-Z 250
2007 - 09 249 77mm 56-K129.77.CW 249 77mm
40004-K01**
RM-Z 250
2010 - 12 249 77mm 56-K148.77.CW 249 77mm
RM-Z 250
2013 - 15 249 77mm 56-K148.77.CW 249 77mm 56-K148.77.CKW
40004-K03**
RM-Z 250
2016 - 18 249 77mm 56-K148.77.CW 249 77mm
CW41005K01**
270 80mm +3mm
RM-Z 250
2019 - 24 250 77mm 56-K1992.77.CYW 250 77mm 56-K1992.77.CKW
**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.
cc.
Dia.
Part No.
cc.
Dia.
Oversize Part No.
YZ 85
47mm 56-K235.475.CYL.CW 85
47mm 56-K235.475.CK.CW 107 52mm +5mm 56-K154.525.CKW
YZ 125
2005 - 21 125 54mm 56-K132.54.CW 125 54mm 56-K132.54.CKCW 2020 - 22 125 54mm 56-K132.54.CW 125 54mm 56-K132.54.CKCW
YZ 125X
YZ 250 YZ 250
1999 - 25 250 66mm 56-K156.664.CYLCW 250 66mm 56-K156.664.CKCW 295 72mm +6mm 56-K156.72.CKCW
2026
250 66mm 56-K156.664.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. 56-K156.664.CHD
*Please visit our website for current prices E109
E-mail: sales@oro2u.com
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