HONDA
CRF150R / RB 2007 - 2023, CYLINDER WORKS 10004 STANDARD BORE 66mm Cylinder Works O.E.M and Big Bore Style Cylinders. Cylinder Works is producing a line of four stroke cylinders in standard and big bore sizes. Currently customers must send out their cylinders for replating after the cylinder becomes worn or damaged. Cylinder Works eliminates these hassles by providing a ready-to-install cylinder available immediately to the consumer. Cylinder Works cylinders look virtually identical to the OEM and are available in standard size and ready to bolt on. Part No. 56-K116.66.CW

Cross reference numbers ONLY.
12100-KSE-670, 12100-KSE-671,   2007 - 2016 Honda CRF 150R,
2007 - 2016 Honda CRF 150RB,