Honda GROM & Monkey 186cc Big Bore Replacement Cylinder

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TB Parts Replacement 186cc Cylinder - all aluminum ceramic coated cylinder is lighter than a steel sleeved aluminum cylinder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs and cools down quicker). This is the same cylinder that comes in our extremely popular 186cc Honda GROM & Monkey big bore kits. Show more