{"product_id":"lm-kb90-portafilter-naked-bottomless","title":"La Marzocco KB90 Naked (Bottomless) Portafilter","description":"\u003ch1\u003e\u003cstrong\u003eLa Marzocco KB90 Naked (Bottomless) Portafilter\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eGenuine La Marzocco naked portafilter for the KB90, part number A.5.124, combining the extraction visibility of a bottomless design with the KB90's Straight-In engagement system.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe naked portafilter has long been the barista's favourite diagnostic tool, and the KB90 version brings that same benefit to La Marzocco's high volume Straight-In platform. With no spout to obscure the flow, espresso extracts straight from the basket into the cup, giving you a direct, unfiltered view of exactly how the shot is developing. Uneven tamping, poor distribution or an incorrect dose all show up immediately as spurting or channelling, rather than being hidden inside a standard spouted portafilter until the shot is already in the cup.\u003c\/p\u003e\n\u003cp\u003eLike the rest of the KB90 range, this portafilter uses the Straight-In locking system rather than the twist-lock mechanism found on La Marzocco's other machines. It pushes straight into the group and engages via a lever release, reducing the repetitive wrist strain that builds up over a long shift. Because this locking mechanism is unique to the KB90, this naked portafilter is not interchangeable with bottomless portafilters designed for La Marzocco's other machines, so it's worth double-checking you're ordering the correct Straight-In version for your setup.\u003c\/p\u003e\n\u003cp\u003eThis is the genuine part, A.5.124, built in stainless steel to the KB90's exact specifications. It's a popular choice for training new baristas, since the immediate feedback it gives makes it far easier to connect a specific prep fault to what shows up in the cup. As with all naked portafilters, be prepared for a bit more mess on the bar during the learning curve, since a poorly prepared puck will spray rather than stay contained behind a spout. The filter basket is sold separately.\u003c\/p\u003e\n\u003ch1\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine La Marzocco part\u003c\/li\u003e\n\u003cli\u003ePart number: A.5.124\u003c\/li\u003e\n\u003cli\u003eDescription: Portafilter Naked, Straight-In\u003c\/li\u003e\n\u003cli\u003eDesigned exclusively for the La Marzocco KB90's Straight-In coffee group system\u003c\/li\u003e\n\u003cli\u003eBottomless (naked) design for direct extraction visibility\u003c\/li\u003e\n\u003cli\u003eStainless steel construction\u003c\/li\u003e\n\u003cli\u003eUses standard 58mm filter baskets\u003c\/li\u003e\n\u003cli\u003eFilter basket not included, sold separately\u003c\/li\u003e\n\u003cli\u003eNot compatible with standard twist-lock La Marzocco groups, KB90 Straight-In system only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eWhat machine is this naked portafilter for?\u003c\/strong\u003e\u003cbr\u003eThis is the genuine naked (bottomless) portafilter for the La Marzocco KB90, built specifically for its Straight-In group engagement system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my other La Marzocco machine?\u003c\/strong\u003e\u003cbr\u003eNo. The Straight-In locking mechanism is exclusive to the KB90, so this naked portafilter is not interchangeable with bottomless portafilters made for other La Marzocco machines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this come with a filter basket?\u003c\/strong\u003e\u003cbr\u003eNo. This is the portafilter body only. You'll need to order a compatible 58mm filter basket separately to suit your dose and grind.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy would I choose a naked portafilter over a spouted one?\u003c\/strong\u003e\u003cbr\u003eA naked portafilter shows you the extraction as it happens, rather than after the espresso has already passed through a spout. It's especially useful for spotting channelling, uneven tamping and distribution problems instantly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs a naked portafilter messier to use?\u003c\/strong\u003e\u003cbr\u003eIt can be, particularly while dialling in a new coffee or training a new barista. Poorly prepared pucks will spray rather than being contained by a spout, so keep a cloth handy while you're finding your rhythm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a genuine La Marzocco part?\u003c\/strong\u003e\u003cbr\u003eYes, this is the genuine part, A.5.124, as listed in La Marzocco's official KB90 parts documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the Straight-In locking system work?\u003c\/strong\u003e\u003cbr\u003eRather than twisting to lock into the group as with a standard portafilter, the KB90's Straight-In system pushes straight in and engages via a lever release, reducing the wrist strain that comes from repetitive twisting over a long shift.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this good for training baristas?\u003c\/strong\u003e\u003cbr\u003eVery much so. Because it exposes extraction issues instantly, it's widely used to help new baristas connect what they're doing at the tamping and distribution stage with what actually happens in the cup.\u003c\/p\u003e","brand":"La Marzocco","offers":[{"title":"Default Title","offer_id":42731417436213,"sku":"05LM-A5124-KB90PFN","price":150.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0023\/1572\/files\/05lm-a5124-kb90pfn01.jpg?v=1700561001","url":"https:\/\/ozonecoffee.mom\/products\/lm-kb90-portafilter-naked-bottomless","provider":"Ozone Coffee UK","version":"1.0","type":"link"}