# IMS B70 Competition 1 Cup (B701TH26.5E)

> Espresso compatibility data from EspressoFit. Confidence: **manufacturer (Tier 1 — manufacturer primary source read firsthand)**.
> Sources last read firsthand: 2026-07-05.
> Canonical page: https://espressofit.com/baskets/ims-b70-competition-1-cup/

## Specifications

- **Diameter:** 58 mm
- **Depth:** 26.5 mm
- **Type:** non-pressurized (single-wall)
- **Brand:** IMS

## Fits these machines

- Breville Oracle (58mm portafilter) — https://espressofit.com/machines/breville-oracle/
- ECM Estetika (58mm portafilter) — https://espressofit.com/machines/ecm-estetika/
- ECM Mechanika MAX II (58mm portafilter) — https://espressofit.com/machines/ecm-mechanika-max-ii/
- Flair 58 (58mm portafilter) — https://espressofit.com/machines/flair-58/
- La Marzocco GS3 (58mm portafilter) — https://espressofit.com/machines/la-marzocco-gs3/
- La Marzocco Linea Micra (58mm portafilter) — https://espressofit.com/machines/la-marzocco-linea-micra/
- La Marzocco Linea Mini (58mm portafilter) — https://espressofit.com/machines/la-marzocco-linea-mini/
- Lelit Bianca (PL162T) (58mm portafilter) — https://espressofit.com/machines/lelit-bianca/
- Lelit Elizabeth (PL92T) (58mm portafilter) — https://espressofit.com/machines/lelit-elizabeth/
- Lelit Kate (PL82T) (58mm portafilter) — https://espressofit.com/machines/lelit-kate/
- Lelit MaraX (PL62X) (58mm portafilter) — https://espressofit.com/machines/lelit-marax/
- Lelit Victoria (PL91T) (58mm portafilter) — https://espressofit.com/machines/lelit-victoria/
- Rancilio Silvia (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia/
- Rancilio Silvia Pro (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia-pro/
- Rancilio Silvia Pro X (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia-pro-x/
- Rocket Espresso Appartamento (58mm portafilter) — https://espressofit.com/machines/rocket-appartamento/
- Rocket Espresso Epica (58mm portafilter) — https://espressofit.com/machines/rocket-epica/
- Rocket Espresso Giotto Fast (58mm portafilter) — https://espressofit.com/machines/rocket-giotto/
- Rocket Espresso Mozzafiato Fast (58mm portafilter) — https://espressofit.com/machines/rocket-mozzafiato/
- Rocket Espresso Porta Via (58mm portafilter) — https://espressofit.com/machines/rocket-porta-via/
- Rocket Espresso R Nine One (58mm portafilter) — https://espressofit.com/machines/rocket-r-nine-one/

## Notes

IMS's single-dose B70 basket — 1 cup, ~9-11g capacity, 26.5mm height with a
narrowed shaft so the small dose still forms a full-height puck. Same B70
border (Ø 70mm) and 58/58.4mm tamper standard as the 2-cup entry, so the
machine cross-references follow the same official IMS B70 list. Verified
against the official IMS product page and catalogue on 2026-07-05.

## Sources

- https://www.imsfiltri.com/filters/B701TH26.5E.html
  - Official IMS Filtri product page ('B70 1 Cup - H26.5 Competition'), read firsthand 2026-07-05. Specs verbatim: 'Border: Ø 70 mm', 'Body: Ø 60 mm', 'Height: 26.5 mm', tamper 'Ø 58/58.4 mm', ridge 'External Ø 60.5 mm', 253 holes of Ø 0.30 mm in a hexagonal pattern over a Ø 30 mm perforated area. Capacity 8.5/10.5g (dark roast) to 10.5/13g (light roast) — a single-dose basket with 'a specialized shaft shape' for 'a higher coffee puck, similar to 2-cup versions'. IMS migrated its product URLs in 2026; this citation was repointed from the original imsfiltri.com/prodotto/ address to the canonical page that address now redirects to, re-checked 2026-07-26 (same product page, content unchanged). Amazon listing verified firsthand 2026-08-03: 'IMS Precision Filter Basket 1 cup Competition E61 single 7-9g B701TH26.5E' — the B701TH26.5E code in the listing title matches this entry exactly. Add-to-cart present, i.e. actually buyable, at the time of checking.
- https://www.imsfiltri.com/IMS-competition-Catalogue.pdf
  - Official IMS Competition Series catalogue, read firsthand 2026-07-04, whose 'For tamper 58 / 58.4' B70 compatibility list names La Marzocco, Rancilio, Lelit, Rocket, ECM and 'BREVILLE (The Oracle)' among the fitting brands — and 'FLAIR ESPRESSO (58)', which is why the Flair 58 is cross-referenced here; Gaggia is assigned to the narrower B68 series.

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Compatibility reference, not a substitute for your machine's manual. Every claim above cites the source it came from; see https://espressofit.com/methodology/ for how entries are verified. Corrections: corrections@espressofit.com.