Description MK1014490 Big Bore Cylinder Piston Gasket Kit Product Info: Cylinder Bore: 91.5mm, 4 Stroke Included in This Kit: (QTY 1) NICHE 519-CCY2295L Big Bore Engine Cylinder Substitute For OEM Part Numbers(s): 12100-HN0-A00 (QTY 1) NICHE 2-DPR7EA-9 Spark Plug Substitute For OEM Part Numbers(s): 98069-57916, 31917-MZ0-760, 31917-HM5-630 (QTY 1) NICHE 519-KGS2251K Gasket Kit Substitute For OEM Part Numbers(s): 12251-HN0-A01, 12191-HM7-830, 12191-HM7-013, 12191-HM7-003 (QTY 1) NICHE 4825M09150 Wiseco Piston Kit Substitute For OEM Part Numbers(s): 13112-MAT-000, 13111-KL3-670, 13111-HN0-A00, 13101-HN0-A00, 13010-HN0-A02 Compatible with the Following Vehicles: Honda FourTrax Foreman 450 S: 1998-2004Honda FourTrax Foreman 450 ES: 1998-2004 WARNING: This product can expose you to chemicals including lead and phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit