Overview The IMS Big Bang 58mm Precision Filter Basket reimagines espresso flow for a 58mm portafilter. Its hole pattern concentrates more openings toward the center, with an increased number of center holes and tighter spacing. Combined with a flat bottom and ridgeless edge, this design supports controlled flow—especially in bottomless setups—while the 70 mm border and 18–20 g capacity offer versatile dosing options. Crafted in Italy by IMS, it’s built to work with a broad range of 58 mm portafilters and group heads, helping you explore a nuanced espresso profile. Key design benefits The center-focused hole layout guides the brew path for more uniform extraction across the puck. The BIG BANG design emphasizes the sweetness of coffee, potentially yielding a smoother, balanced cup. Flat bottom and ridgeless edge are intended to minimize turbulence and help avoid uneven flow. Specs and compatibility For 18–20 g doses; height 23.5 mm (H23.5) with a 70 mm border, designed for 58 mm portafilters. Ridgeless edge and flat bottom support predictable flow, especially with bottomless portafilters. Made in Italy by IMS and compatible with most 58 mm group heads; widely used brands include Gaggia, E61, La Marzocco, Rancilio, Faema, Bezzera, and more. Usage notes and considerations Not every coffee will respond the same way. The Big Bang pattern can enhance sweetness and balance in many coffees, but it isn’t recommended for very light, citrus-forward coffees, as the design may alter their natural characteristics. We suggest testing with you preferred beans and roast levels to see how the profile shifts with your machine and grinder. Practical expectations May support a more uniform shot with reduced channeling when used with proper dosing and tamping. Suitable for double espresso routines on 58 mm setups, offering flexibility across different bean profiles. FAQ Q: What is the IMS Big Bang 58mm filter basket designed to improve? A: Its center-heavy hole pattern aims for uniform extraction and a smoother, balanced espresso with reduced channeling. Q: Is this basket compatible with all 58mm portafilters? A: It fits many 58mm portafilters and uses a 70mm border; verify your group head compatibility before purchase.