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Cylinder Works Vertex +5mm 107.8cc Big Bore Cylinder Kit Yamaha YZ 85 2002-2018
Cylinder made in the USA or Spain. Piston kit made in Italy by Vertex. +5mm Big Bore Cylinder Kit. NOTE - Must modify cylinder head. You need to either be able to do this yourself or have it installed by a shop who can do it.
_gsrx_vers_1706 GS 9.9 (1706).