La Marzocco Group Bayonet Ring Brand_San Marco those groups now use a

those groups now use a two-piece design

Always install a fresh gasket rather than reusing the old one

Signature Kyoto-Style Smoothness

since you can't safely reuse a compressed paper gasket once the old element is pulled

Fits: Mazzer Super Jolly grinders

La Marzocco Group Bayonet Ring Brand_San Marco those groups now use aLa Marzocco Group Bayonet Ring Bayonet ring that locks the portafilter into the group on La Marzocco machines; wears with use and eventually causes the portafilter to seat loosely or engage incorrectly. COMPATIBILITY Fits: All La Marzocco groups INSTALLATION Requires group disassembly; best handled by an experienced technician. PRO TIPS If your portafilter feels loose or won't lock in fully at the usual angle, a worn bayonet ring is the most common