IMS B68 Competition baskets
B68 is the narrower of IMS’s two 58mm series. Same Ø60mm body as B70 and a Ø58mm tamper against B70’s Ø58/58.4mm, but a Ø68mm border — two millimetres that decide whether the basket seats. IMS assigns Gaggia, Carimali and La Cimbali here rather than to B70.
The three diameters
Every basket in this series shares them. They are quoted from the manufacturer pages cited on the individual entries below, not hand-entered here.
| Measurement | Figure | What it decides |
|---|---|---|
| Border Ø | 68 mm | Whether the basket seats in the portafilter |
| Body Ø | 60 mm | Whether it drops in at all |
| Tamper Ø | 58 mm | Which tamper you need |
If those three numbers being different is a surprise, that is the single most useful thing to understand about basket fitment — see why “58mm” isn’t one standard.
Every basket in the series (3)
Single (1 cup)
| Code | Height | Confidence |
|---|---|---|
| B681TH24.5E | 24.5mm | verified |
Competition (2 cup)
| Code | Height | Confidence |
|---|---|---|
| B682TH24.5M | 24.5mm | verified |
Convex
| Code | Height | Confidence |
|---|---|---|
| B682TCH26.5E | 26.5mm | verified |
Dose figures vary by roast level and are published per basket rather than per series, so they live on the individual entries — each one quotes the manufacturer’s own capacity table with the date it was read.
Machines this series fits (2)
- Gaggia Classic GT (58mm)
- Gaggia Classic Pro (E24) (58mm)
Cross-references follow the manufacturer’s own compatibility list rather than size logic, so a machine of the right diameter is not listed unless the source names it. Sizes covered: 58mm.
Wondering what the code itself means — the digits, the letters, the suffix? See IMS basket codes, decoded.