Series 1 Shot Splitter Attachment: What It Does and How to Fit It
By Fellow Products | Published: 2026-11-01
Category: How-to Guides
Learn what the Series 1 Shot Splitter Attachment does and follow a simple step-by-step process to fit it correctly for evenly divided espresso shots.
Quick answer
The Series 1 Shot Splitter Attachment divides a double shot from your Espresso Series 1 into two cups. To fit it, remove the existing spout, seat the splitter firmly, and run a test shot to check for even flow before brewing for guests.
Why the splitter is useful—and when it isn't
The splitter lets you pull one double shot and send it straight into two cups, which saves time when making two drinks at once. It is especially handy for milk-based drinks where each cup needs its own espresso base.
However, if you usually drink single espressos or make one drink at a time, the splitter adds an extra part to clean and may not be worth the swap. Also, it does not change the dose or the grind—you still need to dial in your espresso as usual.
What to check before you start
Make sure your Espresso Series 1 is cool and unplugged before handling parts. Have a clean cloth and a small bowl for parts ready. Confirm you have the Series 1 Shot Splitter Attachment and that the machine is off.
If your machine currently has a different spout or accessory fitted, note how it is oriented so you can reverse the process if needed.
Step-by-step fitting and use
- Remove the existing spout: With the machine off and cool, twist or pull off the current spout or accessory from the group head. Set it aside in a bowl so it doesn't roll away. Check that the group head threads or fitting are clean and free of coffee residue before proceeding.
- Seat the splitter attachment: Align the Series 1 Shot Splitter Attachment with the group head outlet and press or twist it into place until it feels secure. Do not force it—it should fit flush without gaps. A common mistake is not pushing it on far enough; a loose splitter will leak and cause uneven flow.
- Run a test shot: Place two cups under the splitter outlets, pull a double shot as usual, and watch the flow from both sides. Ideally, both streams should start and finish at roughly the same time. If one side flows much faster, remove and reseat the splitter—debris or misalignment is often the cause.
- Clean after use: After brewing, remove the splitter and rinse it with warm water. Wipe the group head area to prevent coffee buildup. Reinstall only when fully dry. Avoid dishwasher cleaning unless the product instructions explicitly allow it; hand rinsing preserves the fit.
Product facts
- Series 1 Shot Splitter Attachment: Designed specifically for Fellow's Espresso Series 1 machine. It ensures a proper fit and reliable splitting without needing adapters.

Series 1 Shot Splitter Attachment - Series 1 Shot Splitter Attachment: Divides a double shot into two separate cups. You can prepare two drinks from one pull, saving time during busy mornings.
