Introvert Step-Down Portafilter Basket

Transform your espresso workflow with the Introvert Step-Down Portafilter Basket – a 58mm basket engineered with a 49mm extraction zone to optimise puck density, flow control and flavour balance. This innovative “step-down” design deepens the coffee bed and concentrates the extraction area, producing richer, more stable shots with improved resistance and fewer inconsistencies. It’s a precision tool designed for baristas and enthusiasts seeking the next evolution in espresso geometry.

CNC-machined from a solid block of 304 stainless steel, this basket delivers precision unmatched by stamped alternatives. The perfectly straight walls and sharply defined edges promote consistent flow, while the thickened base minimises flex during extraction – even at pressures up to 9 bar. Its robust build offers exceptional corrosion resistance and long-term durability, ensuring reliable performance for years to come.

The narrowed 49mm internal diameter allows for a taller, more compact puck while maintaining your existing 58mm portafilter setup. This configuration creates a more even pressure gradient through the grounds, reducing the risk of channelling and enhancing clarity in every cup. Whether you’re experimenting with light roasts or pursuing high-extraction shots, the Introvert Step-Down Basket brings new depth and sweetness to your espresso.

Introvert Step-Down Portafilter Basket

CNC-Machined Precision – Cut from a solid block of 304 stainless steel for exact geometry, sharper edges and superior durability.

Step-Down Extraction Zone – Converts a 58mm basket into a 49mm chamber, creating a taller puck that promotes balanced resistance and richer flavour.

Improved Flow Stability – The compact bed structure supports even water distribution, minimising channelling and enhancing clarity.

Optimised Hole Pattern – 1001 laser-cut holes with a 3.6% open area deliver uniform flow and clean extractions.

Seamless Geometry – Smooth funnel transition ensures no ledges or turbulence for consistent extraction across the puck.

Compatible Design – Works with standard 58mm tampers, dosing tools and bottomless portafilters.

This Product Includes

• 1 x Introvert Step-Down Espresso Basket (Alpha V0.1 Edition)
• 1 x 49mm Steel Mesh Puck Screen
• 1 x 49mm Steel Spring
• 1 x 3D-Printed Dosing Ring
• 1 x 3D-Printed 49mm Simple Tamper
• 1 x 3D-Printed Portafilter Stand

Specifications