# IMS B70 Competition Convex 2 Cup (B702TCH26E)

> Espresso compatibility data from EspressoFit. Confidence: **manufacturer (Tier 1 — manufacturer primary source read firsthand)**.
> Sources last read firsthand: 2026-07-04.
> Canonical page: https://espressofit.com/baskets/ims-b70-competition-2-cup/

## Specifications

- **Diameter:** 58 mm
- **Depth:** 26 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 B70-series competition basket for 58mm groups, in the 2-cup 26mm-height
convex variant (code B702TCH26E). The nominal 58mm size refers to the tamper
fit (IMS specifies Ø 58/58.4mm precision tampers); IMS's own dimensions are
Ø 70mm border, Ø 60mm body, 26mm height. The machine cross-references follow
IMS's official B70 compatibility list, which names La Marzocco, Rancilio,
Lelit, Rocket, ECM and 'BREVILLE (The Oracle)' explicitly — the Oracle is
Breville's one 58mm machine; the 54mm Barista/Bambino lines are not B70
compatible. Deliberately NOT cross-referenced to the Gaggia Classic Pro:
IMS's catalogue puts Gaggia in the B68 series, whose border is 2mm narrower
"for a better fit in portafilters of the quoted brands". Verified against the
official IMS product page and Competition catalogue on 2026-07-04.

## Sources

- https://www.imsfiltri.com/filters/B702TCH26E.html
  - Official IMS Filtri product page, read firsthand 2026-07-04. Specs verbatim: 'Border: Ø 70 mm', 'Body: Ø 60 mm', 'Height: 26 mm', tamper 'Ø 58/58.4 mm', 715 holes of Ø 0.30 mm in a hexagonal pattern over a Ø 49 mm perforated area, ridgeless with a convex bottom. Capacity 17/19g (dark roast) to 20.5/23g (light roast) for 2 cups. 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 Competition Convex Filter Basket for bottomless 58mm portafilters (20g) B702TCH26E' — the B702TCH26E 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. States verbatim under 'For tamper 58 / 58.4': 'B70 (BORDER Ø 70 mm) E61 & compatible groups like BELLEZZA, BEZZERA, BFC, BIANCHI, BRASILIA, BREVILLE (The Oracle), D.I.D., ECM, EXPOBAR, FAEMA, FIORENZATO, FLAIR ESPRESSO (58), GRIMAC, IBERITAL, KEES VAN DER WESTEN, LA MARZOCCO, LA NUOVA ERA, LA SCALA, LELIT, L'ORCHESTRALE, MARO, MAVAM, MERAKI, MR. CAFÉ, NUOVA SIMONELLI, PROFITEC, QUALITY ESPRESSO, QUICK MILL, RANCILIO, ROCKET, ROYAL FIRST, SAN REMO, SLAYER, SV-SAB, SYNESSO, VFA, VIBIEMME, VICTORIA ARDUINO, WEGA.' Note: Gaggia is NOT in the B70 list — IMS assigns Gaggia (with Carimali and La Cimbali) to its narrower Ø 68 mm 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.