No interest, no fees. 4× instalments over 6 weeks.
Achille Gaggia founded Gaggia in Milan in 1930, in pursuit of the perfect cup of espresso — and the brand is credited with the lever mechanism that made modern espresso possible. Today Gaggia's range spans affordable prosumer machines through to bean-to-cup, all built on that original engineering pedigree.
Straight out of the box, the Gaggia Classic Pro's vibratory pump pushes 12–15 bar of pressure through your puck — nearly double the 9 bar that specialty coffee has settled on as the standard for balanced extraction. At that stock pressure, you're fighting the machine: harsh, bitter shots, channelling no matter how carefully you tamp, and a grind window that feels impossibly narrow. The OPV — Over Pressure Valve — spring physically reduces the pump's ceiling to 9 bar, widening your margin for error and letting the coffee's actual flavour come through instead of being forced out of it.
This isn't a workaround or a gimmick mod — it's the single most common upgrade Classic Pro owners make, precisely because it addresses the machine's one real shortfall out of the factory. The spring swap itself is straightforward for a technician, but it does involve opening the pump assembly, and doing it yourself will void your Gaggia warranty. Buna Coffee is registered to carry out this modification without affecting that warranty, so you get the upgrade without the risk.
Nine bar is the standard for a reason — this is the modification that gets your Classic Pro there, without gambling your warranty to do it.
For the Classic Pro owner who's done the reading — followed the forums, watched the extraction breakdowns, maybe already dialled in a fresh burr grinder — and landed on the same conclusion the specialty coffee world has: 9 bar is where this machine should live. If your shots are consistently harsh or sour no matter how you adjust your grind and dose, stock pressure is very often the real culprit, not your technique.
It's equally suited to the owner who's planning a fuller Classic Pro upgrade path — PID controllers, better portafilters, precision baskets — and wants the pressure sorted first, since it's the change that affects every single shot you pull afterward.
|
Specification |
Value |
|
Compatible Machine |
Gaggia Classic Pro |
|
Stock Pressure |
12–15 bar (vibratory pump) |
|
Modified Pressure |
9 bar |
|
Installation |
Fitted in-house by Buna Coffee |
|
Warranty Impact |
Home installation voids your Gaggia warranty — Buna Coffee is registered to perform this modification without affecting it |
|
Pricing & Booking |
Contact us for details |
If your Classic Pro has never quite tasted the way the reviews said it should, this is very likely why — and at this price, it's the cheapest real upgrade the machine can take. Book it in with us, keep your warranty intact, and stop fighting your espresso.
Hey, we get it, coffee equipment is not cheap! And paying the bills with coffee takes time. Use our payment options to ease up some cashflow!
We now offer you the following options:
1) Settle immediately with either YOCO or PayFlex
2) Shop on credit with Mobicred (via Peach Payments)
3) Use now, pay later with Payflex (via Peach Payments)
4) Use now, rent until you own with Buna Rent-to-own
5) Apply for financing through Buna Coffee (refer to this link)
