Leonardo Momento Zero Grande Pistone Review: A Piston-Filled Flex Pen with Real Charm

Introduction

The Leonardo Momento Zero Grande Pistone is the piston-filler version of Leonardo’s larger Grande platform, and in this Dark Hawaii finish it is an undeniably attractive pen: a deep blue and dark wine material with subtle striations that looks premium in the hand. Unlike earlier Leonardo pens that shipped with a captive converter, this one has a genuine piston filling system, which raises the ink capacity to a healthy 1.5 ml and adds a certain old-school appeal for fountain pen enthusiasts.

This configuration goes further, pairing the piston filler with a 14k fine flex nib and an ebonite feed. That combination is the main reason this pen stands out: it is a modern Italian pen built around expressive, playful writing rather than just clinical performance.

First Impressions and Packaging

The pen arrives in layered packaging: an outer sleeve, an inner sleeve, and then the actual box, which includes a small booklet and a Made in Italy certificate card, plus a slot for a bottle of ink. It is a presentation that feels appropriately fancy for the price.

Set next to a Pilot Metropolitan, the Grande is clearly a large pen. If size alone is not enough, it also posts, giving you a substantial writing instrument either way. The cap lip is now chiseled down rather than straight, sitting flush with the barrel, a small aesthetic refinement that reads as cleaner and more considered.

Build, Design and Comfort

The finial matches the cap material, and the rhodium-trimmed clip with its little wheel is quite stiff but functional. Bands at the cap and near the piston turning knob frame the blind engraving reading Leonardo Officina Italiana with a limited number. The piston knob itself is at the back of the barrel, standard for a piston filler.

The section is a signature Leonardo design. It looks unusual the first time you see it, but in practice it is very comfortable, and the metal ring at the end of the section is smooth rather than sharp. One practical note: because that metal ring sits in contact with ink, it should be wiped down and dried after use to avoid any corrosion over time.

Writing Performance: The 14k Fine Flex Nib

Unflexed, the 14k fine nib produces a nice fine, true-to-name line with good, though not gushing, flow. The ebonite feed is the real hero here: compared with similar flex nibs that use plastic feeds, the ebonite feed keeps up remarkably well.

With gentle pressure, line variation opens up nicely, and written quickly there was no railroading even without priming the feed. Pushing to the limit of comfort, the flex stays controlled, though you should not treat this like vintage flex and lean hard into it. As modern flex goes, it is genuinely impressive, adds real panache to handwriting, and reverse writing is also possible once the feed catches up.

Things to Consider Before Buying

The one real drawback: there is no ink window. Because the section does not open for a quick look at the reservoir, you simply cannot tell how much ink is left in the pen. That said, with everything else the pen does well, it is an acceptable trade-off.

Pricing also deserves attention. The piston version costs 243.80 euros, and this upgraded 14k flex nib adds 164.46 euros on top. The number 8 nib upgrade adds 301.65 euros, which more than doubles the cost of the pen. At the base configuration with a steel nib, you can stay under 250 euros for a very pleasant writer.

Buying Advice

This pen suits writers who want a large, comfortable pen with a genuine piston system and a bit of writing flair. It is large without being obscenely large, girthy without being unwieldy, and the flex nib makes everyday writing genuinely fun. If clinical, monoline consistency is your priority, a standard nib configuration may serve you better, but for expressive handwriting and a beautiful material at a reasonable base price, it is easy to recommend.

Conclusion

The Momento Zero Grande Pistone with the 14k fine flex nib is a thoughtfully made Italian pen with an attractive finish, a real piston filler with solid ink capacity, and a nib that makes flex writing approachable without pretending to be vintage flex. If a fun, comfortable, good-looking flex pen is what you are after, this one has a lot going for it.