The 24.5mm-height flat-bottom variant of IMS’s B70 2-cup competition basket —
2mm shallower than the convex B702TCH26E entry, with a rounded internal
corner instead of a convex bottom. Notable because IMS’s own La Marzocco
guidance recommends the H24.5 or H26.5 heights for an 18g dose on La Marzocco
machines. Same official B70 compatibility list as the other B70 entries.
Verified against the official IMS product page and catalogue on 2026-07-06.
FAQ
What size portafilter is the IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) for?
It is a 58mm basket, 24.5mm deep, for 58mm portafilters.
Is the IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) pressurized?
No — it is a non-pressurized (single-wall) basket, for freshly ground coffee.
Does the IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) 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 IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) fit?
Breville Oracle; ECM Estetika; ECM Mechanika MAX II; La Marzocco GS3; La Marzocco Linea Micra; La Marzocco Linea Mini; Lelit Bianca (PL162T); Lelit Elizabeth (PL92T); Lelit Kate (PL82T); Lelit MaraX (PL62X); Lelit Victoria (PL91T); Rancilio Silvia; Rancilio Silvia Pro; Rancilio Silvia Pro X; Rocket Espresso Appartamento; Rocket Espresso Epica; Rocket Espresso Giotto Fast; Rocket Espresso Mozzafiato Fast; Rocket Espresso Porta Via; Rocket Espresso R Nine One — each confirmed against manufacturer sources (listed below).
Sources
https://imsfiltri.com/prodotto/b702th24-5m/(archived) — Official IMS Filtri product page ('B70 2 Cups - H24.5 M Pattern'), read firsthand 2026-07-06. Specs verbatim: 'Border: Ø 70 mm', 'Body: Ø 60 mm', 'Height: 24.5 mm', tamper 'Ø 58/58.4 mm', ridge 'External Ø 60.5 mm', 641 holes in M pattern of Ø 0.30 mm over a Ø 49 mm perforated area, 'engineered with a rounded internal corner' to 'promote uniform extraction, facilitating a cleaner puck drying and easier expulsion'. Capacity 16/18g (dark roast) to 20/22.5g (light roast).
https://www.imsfiltri.com/IMS-competition-Catalogue.pdf(archived) — 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; Gaggia is assigned to the narrower B68 series.