Quick view Compare Koso 61mm Cylinder Gasket Kit - Honda Grom (128-7) Koso 61mm Cylinder Head Gasket and Cylinder Base Gasket for the Honda Grom (MA623100). Koso 61mm Cylinder Gasket Kit - Honda Grom Specifications Includes 1 Head Gasket and 1 Base Gasket Regular Price(MSRP) $42.00 Season Special $33.99 Add to Wishlist Add to Cart