VST Precision 58mm Filter Basket (18g)

• Diameter: 58mm
• Depth: 24mm
• Type: non-pressurized
• Brand: VST

This basket is one of a line. See every VST Precision basket compared — the whole ladder of heights and variants on one page, with the three diameters they share.

Fits these machines

• La Marzocco GS3 (58mm portafilter)
• La Marzocco Linea Micra (58mm portafilter)
• La Marzocco Linea Mini (58mm portafilter)
• Rancilio Silvia (58mm portafilter)
• Rancilio Silvia Pro (58mm portafilter)
• Rancilio Silvia Pro X (58mm portafilter)

This entry covers the 18g size specifically — VST sells 7g through 25g baskets and each capacity has a different depth (the 18g is 24.0mm per VST’s own size table), so a single entry cannot honestly describe the whole range. The 18g was chosen because per VST it fits most La Marzocco and Rancilio standard portafilters without the bottomless-portafilter caveat VST applies to sizes above 18g. Verified against the official VST store page on 2026-07-04.

There is no 54mm VST basket

Worth stating plainly, because it is the most common question asked about this brand. VST builds for 58mm only, and rules the smaller formats out in its own words: “VST Filters DO NOT fit 49, 53 or 54mm portafilters.” So there is nothing here for a Breville Barista Express, a Bambino or any other 54mm machine — not a different VST size, nothing at all.

On a 54mm machine the equivalent precision line is IMS’s B62.5 series, which IMS names for those models directly. See parts that don’t exist for the full answer and Breville 54mm vs 58mm for why the formats do not interchange.

Find the VST Precision 58mm Filter Basket (18g) on Amazon (affiliate link — see our disclosure)

Also fits the same machines

Other items confirmed to fit machines this one fits — useful if you're kitting out a single setup. The count is how many of those machines overlap; nothing here is a new fitment claim.

• IMS B70 Competition 1 Cup (B701TH26.5E) (58mm basket) — shares 6 machines
• IMS B70 Competition 1 Cup H18.5 (B701TH18.5N) (58mm basket) — shares 6 machines
• IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) (58mm basket) — shares 6 machines
• IMS B70 Competition 1 Cup H24.5 (B701TH24.5N) (58mm basket) — shares 6 machines
• IMS B70 Competition 2 Cup H22.5 M Pattern (B702TH22.5M) (58mm basket) — shares 6 machines
• IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) (58mm basket) — shares 6 machines

FAQ

What size portafilter is the VST Precision 58mm Filter Basket (18g) for?

It is a 58mm basket, 24mm deep, for 58mm portafilters.

Is the VST Precision 58mm Filter Basket (18g) pressurized?

No — it is a non-pressurized (single-wall) basket, for freshly ground coffee.

Does the VST Precision 58mm Filter Basket (18g) fit 54mm machines like the Breville Barista Express?

No. It is a 58mm basket, so it does not fit Breville's 54mm machines or any 54mm portafilter.

Which machines does the VST Precision 58mm Filter Basket (18g) fit?

La Marzocco GS3; La Marzocco Linea Micra; La Marzocco Linea Mini; Rancilio Silvia; Rancilio Silvia Pro; Rancilio Silvia Pro X — each confirmed against manufacturer sources (listed below).

Sources

• https://store.vstapps.com/products/vst-precision-filter-baskets (archived) — Official VST store product page, read firsthand 2026-07-04 and re-read firsthand 2026-08-23 (unchanged). States verbatim: 'Designed to fit most 58mm Portafilters (inside diameter)'; '20g, 18g & 15g fits most La Marzocco, Synesso, Nuova Simonelli, Faema, La Cimbali, Rancilio'; 'Some Faema, La Cimbali, Rancilio may require a bottomless portafilter to use VST filters larger than 18g'; and 'VST Filters DO NOT fit 49, 53 or 54mm portafilters'. The page's per-size table lists the 18g basket at 24.0mm height (15g: 22.0mm, 20g: 26.0mm, 22g: 28.0mm, 25g: 30.0mm), which is where this entry's depth comes from. Available in standard (ridged) and ridgeless versions.

Spot an error? The fastest fix is the source itself —send us the manufacturer page that contradicts this entry and we'll correct it and cite it. See how we verify.