Gaggia Classic 9 Bar OPV Spring.

The Classic ships set to about 15 bar, which is more than the coffee wants. Swap the spring in the OPV and it settles to 9, or a little under if you back the valve off, and shots stop running harsh at the end.

This is the spring only. You need a 10mm wrench, a screwdriver, and about ten minutes at the black plastic OPV body on top of the pump.

Specs

• 304 stainless steel spring
• 9 bar, adjustable lower
• Hand wash

Fits

Gaggia Classic 2015 EU, 2018, 2019, 2020 onward EU, and post-2018 US models (Classic Pro and Evo).