on saleKaweco Brass Sport Fountain Pen

Product Code KAW-10000916

In Stock

out of stock

on saleKaweco Brass Sport Fountain Pen

Product Code KAW-10000916

In Stock

out of stock

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Kaweco Piston Cartridge Converter
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Kaweco Piston Cartridge Converter

Product Code KAW-10001349

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Kaweco Sport Clip - Black
Add a Clip + $4.00 Kaweco Sport Clip - Black

Kaweco Sport Clip - Black

Product Code KAW-11000154

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Kaweco Caramel Brown - Ink Cartridges
Add Disposal Ink Cartridges + $4.00 Kaweco Caramel Brown - Ink Cartridges

Kaweco Caramel Brown - Ink Cartridges

Product Code KAW-10000259-08

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The Kaweco Brass Sport is a pocket-sized fountain pen that when posted transforms into a full-sized pen that easily fits in your hand. The brass will pick up its own unique patina and pattern of scuffs and scratches over time as you use and transport the pen, making this version of the Sport truly unique to you. It comes with a stainless steel nib and an ink cartridge to get you started writing right away!

It accepts short standard international cartridges. Kaweco converter and optional clip sold separately.

Note: This pen comes with an ink cartridge stored in the body. If it doesn’t fall right out, you can get it loose by giving the body a few solid taps on a hard surface.

Click here to shop all compatible short standard international ink cartridges.

Fountain Pens

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Body Material
Cap Rotations

For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.

Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled inks, Standard international short cartridges
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Cartridge, Converter
Grip Material
Nib Size
Extra-Fine, Fine, Medium
Nib Color
Nib Material

Whether or not the cap fits securely onto the back of the barrel when open.


Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

Diameter - Body
11mm (0.43in)
Diameter - Cap (without clip)
14mm (0.55in)
Diameter - Cap (with clip)
18mm (0.71in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

Length - Body

The measurement from the back end of the barrel to the tip of the nib.

100mm (3.94in)
Length - Cap
70mm (2.76in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

15.7mm (0.62in)
Length - Overall (Closed)
108.2mm (4.26in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

134.1mm (5.28in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

29g (1.02oz)
Weight - Cap
19g (0.67oz)
Weight - Overall (g)
Max Ink Capacity - Cartridge

The maximum volume of ink that can fit in the pen when using a cartridge.

Max Ink Capacity - Converter

The maximum volume of ink that can fit in the pen when using a converter.


Customer Reviews

Based on 14 reviews
Brian L.
Brass Sport - Medium

Packaging was overdone and appreciated. Shipping was fast.Regarding the pen itself, I think it is a different experience from a plastic body Sport, so you really can't get too much indication of how you would like this brass Sport simply by using a plastic body version, imho. I do not find too much of a brassy smell, as some people mention. In fact, I would prefer if there were more.Machining of the body and cap is very well done. The weight is actually ideal for me. It feels really nice to hold and carry. When it is posted, it is near perfectly balanced; unposted works for quick notes too. I think in 'person', it has a cooler minimalist/industrial look than photos may deliver otherwise. I really like a smaller nib size, since it helps maintain a more low key look, despite the shiny brass. Though eventually some patina will curb the shine, and that will also become a personalization of the pen, which is a very nice side-effect if you choose not to clean it. It may be a perfect travel/pocket/edc pen. Great for notes at job sites, or for random thoughts during the day. I can see it as a good pen for students, I would likely have used it if I were in the hobby when I was back in school. In general, as a minimalist, I rate this Brass Sport second to my favorite of all fountain pens, the Lamy 2000. The Brass Sport serves a different use case and I feel more comfortable leaving the house with it in my pocket, due to it's size and construction.


Very nice, sturdy, well constructed pen.


Very nice, sturdy, well constructed pen.

Don B.
Should get 4.5 stars

Thoughts from a long time Goulet customer on the Kaweco Brass Sport Fountain Pen. I have owned this for a couple years now as my go-to notebook pen. It's got a great patina and I often get compliments on it. Here are other things to consider:- It wouldn't stay posted. Following the advice of several others on the blogs, I put a little square of scotch tape near the top of the pen barrel to give the cap something to cling to. Stays on now, but really Hans?- I finally sprung for the solid gold nib. I lived with the steel nib and then tried the gold-plated one, but the EF in anything other than gold was stiff and scratchy. Gold one writes like buttah.- I got the gold clip, since it matched the nib and made the pen easier to handle and not roll around. Like adding a clip to a pocket knife. Clip should come with this pen, but I guess people like to pick their own color.- I bought a short leather pen sleeve from Popov Leathers. It protects my pocket (it never has leaked) and I can tuck in a spare ink cartridge, which is good because the pen only holds tiny ones. BUT there must be plenty of room up there. I had to stuff a foam ear plug up into the barrel because 2 or 3 times the cartridge popped off and the nib started to unscrew and ink leaked in the cap. Not good. Doesn't go anywhere now with the earplug holding the cartridge in.Does that seem like alotta tinkering for a $100 German-engineered pen that I spent $250 on?Yes, but it is mine, and I will keep it always.

Marya R.
I love this pen

I love this pen. It's a little heavy for long writing - especially if posted, but that's not what I bought this for. It's meant to be a note-taker at work. I had a Nautilus Peter Draws numbered black pen with silver accents, and I dropped it (while capped) on the floor and the cap cracked and now it won't seal. That broke my heart. So after that, I wanted something indestructible and decided on this. I love this pen. It's my first fine nib and I like that for my smaller writing. I catch myself not posting it, even though I think I love posting pens. I love holding the cap, feeling the facets, the engraved logo, and the chrome clip I added. (I'm a fidgety person.)I love that it's getting a patina already. And I've already dropped this (while closed) on something metal and there's not a nick on it. I love this pen. I said that already, didn't I? ; )

FAQs about Fountain Pens

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We recommend a good cleaning every 2 weeks, and any time you change ink colors. 

Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can submit a return request within 30 days of your order date. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.