9 Bar 6 Bar OPV Spring Modification for Espresso Machines - Compatible with Gaggia Classic

Really impressed with this super easy modification to my Gaggia. Quick install and pressure gauge is showing a static pressure of 10 Bar when testing with a blank portafilter. Showing right around 9 Bar when pulling a shot. Overall, probably the easiest and cheapest mod you can make to your Gaggia to improve your espresso shots.

It is a must if you have a Gaggia Classic Pro (or Evo Pro), and you will use a non pressurized basket. Your espresso consistency will be greatly increased. I used only the 9 bar spring. Very easy to install too.

the gaggiuino mod on my gaggia classic pro, required this and it was less of a hassle than hunting down washers to change the spring tension on the 9 bar spring up to 12 bar. just a r&r process. good luck with your mod.

I only get exactly 8 bar out of the 9 bar spring. For me, that's not bad enough to return and ask for a replacement on a relatively inexpensive item, but just be aware that it might not be perfect

This took my shots from a spraying mess to beautiful clean extractions. Did not see a ton of reviews for this so was a bit skeptical but it worked perfectly for me. Did not test with exact pressure at the group but doesn't really matter for me results are showing every time I pull a shot. Honestly it should have came with the 9 bar spring in the machine box.

Finally! Now my gaggia has the proper pressure for good shot! It was easy to install using the video scanned from the included barcode.

Bought the set, installed the 9bar spring and tested the pressure delivered at the portafilter (not inside the pump).. Gave me a 9,25 kgf/cm2 which is equivalent to 9bars. Very happy with the results!!

Effectively lowered the pressure in my Gaggia Classic Pro. Instructions were clear. Easy to replace 15 lbs spring with 9 lbs spring.