**Restore Efficiency and Consistency with the KB90 Straight-In Single Portafilter (A.5.113)** Is your café struggling with slow workflow or wrist strain from traditional portafilters? The genuine La Marzocco KB90 Straight-In, Single Portafilter with Spout (Part # A.5.113) is the direct solution for modernizing your espresso station. Engineered specifically for the KB90, this portafilter features the machine's signature straight-in mechanism, dramatically reducing the repetitive stress injury (RSI) associated with twisting portafilters into the group head. This critical ergonomic upgrade enhances bar flow and ensures every barista can execute quick, consistent shots. Utilizing only original equipment manufacturer (OEM) quality materials, this part maintains the premium feel and durability expected of La Marzocco, preventing common wear issues and guaranteeing a perfect seal for optimal extraction pressure. This single-shot portafilter is designed for precision dosing and is critical for cafés that offer Ristrettos or single espresso options. The included spout ensures clean delivery into a single cup, minimizing splash and maximizing presentation. Key features include the specific straight-in lug design, a comfortable handle grip, and the durable chrome-plated brass body. When combined with the KB90’s innovative group head geometry, this portafilter simplifies the tamping and locking process, making it the essential replacement or spare part to maintain the high-volume performance of your La Marzocco KB90. Ensure seamless operation and prevent extraction inconsistencies caused by faulty or worn portafilters. Investing in the genuine KB90 Straight-In Single Portafilter is the best way to eliminate group head leakage and restore the intended ergonomic benefits of your KB90 machine. Shop Kaldi.com today for this indispensable component to upgrade your barista experience and secure the longevity of your commercial espresso machine.