La Marzocco KB90 Straight-In Portafilter, Double Spout

Genuine La Marzocco replacement portafilter for the KB90, part number A.5.114, built for the machine's unique Straight-In engagement system.

The KB90's Straight-In portafilter isn't just a portafilter with a new name. It's a completely different way of locking into the group. Rather than the twist-and-lock motion baristas use on every other espresso machine, the KB90 uses a straight push-in action with a lever release, cutting out the repetitive wrist rotation that builds up over a long shift. Independent research commissioned by La Marzocco found the Straight-In system can reduce barista wrist strain by as much as twelve times compared with a standard twist-lock portafilter, which matters enormously in high volume sites pulling hundreds of shots a day.

This genuine replacement, part A.5.114, is the double spout version, built in stainless steel to the same tolerances as the portafilter your KB90 shipped with. Because the Straight-In locking mechanism is specific to the KB90, this portafilter is not interchangeable with the twist-lock portafilters used across the rest of the La Marzocco range, so it's essential to order the correct Straight-In version rather than a standard 58mm portafilter when replacing a worn or damaged unit.

Whether you're replacing a portafilter that's taken a knock, refreshing a well-used group after years of service, or simply keeping spares on hand for a busy multi-group site, this is the genuine part sourced to keep your KB90 performing exactly as intended. As with all La Marzocco portafilters, the filter basket is sold separately, so you can choose the dose and basket profile that suits your coffee.

• Genuine La Marzocco part
• Part number: A.5.114
• Description: Portafilter Straight-In, double spout
• Designed exclusively for the La Marzocco KB90's Straight-In coffee group system
• Stainless steel construction, double spout outlet
• Uses standard 58mm filter baskets
• Filter basket not included, sold separately
• Not compatible with standard twist-lock La Marzocco groups, KB90 Straight-In system only

What machine is this portafilter for?
This is the genuine double spout portafilter for the La Marzocco KB90, built specifically for its Straight-In group engagement system.

Will this fit my other La Marzocco machine?
No. The Straight-In locking mechanism is exclusive to the KB90, so this portafilter is not interchangeable with the twist-lock portafilters used on other La Marzocco machines.

What does "Straight-In" actually mean?
Rather than twisting to lock into the group, the KB90's portafilter pushes straight in and engages via a lever release. It's designed to reduce the repetitive wrist strain that builds up from twist-lock motions over a long shift.

Does this come with a filter basket?
No. This is the portafilter body only. You'll need to order a compatible 58mm filter basket separately to suit your dose and grind.

Is this a genuine La Marzocco part?
Yes, this is the genuine part, A.5.114, as listed in La Marzocco's official KB90 parts documentation.

Why would I need to replace my KB90 portafilter?
Portafilters can wear or become damaged from daily use, drops, or worn locking components. Replacing with the correct genuine part keeps the Straight-In engagement working smoothly and maintains a reliable seal on the group.

Does the Straight-In design affect extraction quality?
No, extraction quality depends on your basket, dose, grind and puck prep as with any portafilter. The Straight-In mechanism only changes how the portafilter engages with the group, not how the espresso itself is extracted.

Is there a single spout version available?
Yes, La Marzocco also produces a single spout Straight-In portafilter for the KB90, part number A.5.113, alongside a naked (bottomless) version.