Precision Ridgeless Double Portafilter Basket - 18/20gr

IMS Precision Ridgeless Double Portafilter Basket, 18/20g

A shorter, ridgeless IMS competition basket built to maximize puck contact and even extraction, the flat-bottomed, cylindrical shape was engineered by I.M.S. to balance the coffee bed's height-to-base ratio for cleaner flow and easier drying/expulsion.

SPECIFICATIONS

• Height: 26 mm (shorter than standard)
• 70 mm outside diameter at the rim, 60 mm body, sized for 58 mm tampers
• Ridgeless, flat bottom, 49 mm perforated area with exactly 715 laser-precise 0.30 mm conical holes
• Finished by wet vibrofinishing with ceramic media, corncob-dried, then electropolished for a smooth, non-contaminating surface
• Material: stainless steel

COMPATIBILITY

• Fits: 58 mm portafilters (a thicker, 1.2 mm portafilter basket seat is recommended for the tightest fit)
• Also listed as: Kees Van Der Westen #MSR-A130-20

INSTALLATION

Drops directly into a compatible 58 mm portafilter, no tools required, though a thicker-walled portafilter is recommended for the snuggest seat.

PRO TIPS

• IMS's patented perforation pattern is genuinely different from generic laser-cut baskets, the conical hole shape and exact 715-hole count are tuned specifically to this basket's height and diameter, which is why swapping brands can shift your shot timing even at the same dose.
• Because it's shorter than a standard 18/20g basket, use it with a properly leveled tamper stroke, the reduced puck height makes channeling from an off-axis tamp more noticeable in the cup.