The RX35 Red Clix swaps your grinder's axle and grind grade dial for a finer-threaded pair, roughly doubling the number of clicks across the same grind range. It doesn't grind finer. It gives you smaller steps between settings — which is exactly what espresso demands.
The problem it solves
A standard Comandante gives you a click range that comfortably covers everything from ibrik to French press. For filter brewing that resolution is ideal: one click is a meaningful, tasteable step, and you're never stuck between two settings.
Espresso is less forgiving. In the seven-to-thirteen click region, a single click can be the difference between a shot that gushes and one that chokes. Plenty of people have found themselves wishing for the setting between nine and ten.
Red Clix is that setting.
What actually changes
Both the axle and the grind grade dial are manufactured with an ultra-fine precision thread. Because the thread pitch is finer, each click advances the burr a smaller distance — so you get roughly twice as many available click steps across the same particle size range.
Two things worth being clear about, because they're the questions we're most often asked:
- It does not extend the grind range. Your finest setting is still your finest setting. Red Clix changes resolution, not reach.
- It does not change the click mechanism. The clicks are the same solid, positive, countable clicks — there are simply more of them.
Who it's for
| If you | Then |
|---|---|
| Pull espresso at home | This is the upgrade. Finer steps are the whole game at that end of the range. |
| Compete, or dial in professionally | Yes — the precision is the point, and repeatability is your currency. |
| Brew filter and press | Probably not. Standard clicks are already the right size for these methods, and doubling the count just means more counting. |
| Brew ibrik or cezve | Worth considering. The very fine end benefits from the same resolution espresso does. |
Fitting it
This is a straightforward swap using the same disassembly you'd do for a deep clean. Work over a table — there are small parts.
1. Pull the knob off the crank, then pull the crank away from the body; it's held by a magnet.
2. Unscrew the three-pointed grind setting dial all the way off, holding onto the dial and burr as they come free.
3. Remove the cone, spring, washers and standard axle.
4. Fit the Red Clix axle in place of the standard one, reassembling the washers as before: raised edge towards the bearing, top washer in before the axle.
5. Seat the spring in the cone, slide the cone onto the axle, and screw on the Red Clix grind grade dial.
Do not touch the three mounting screws around the burr on the base. They hold your grinder's calibration and undoing them voids the warranty. The Red Clix swap doesn't require them.
Translating your old settings
Your existing click numbers won't carry over. As a rough rule, expect to roughly double them — but treat that as a starting point rather than a conversion.
The clean way to do it is to start fresh: find Click Zero on the new axle, count out to approximately double your old number, and dial in from there by taste. Half an hour and a bag of coffee and you'll have a new set of reference numbers that are actually yours.
Keeping track of twice as many clicks
Doubling the click count does make the number harder to hold in your head, which is precisely why the Clix Mate exists. It sits on the grinder and holds the setting, so the information lives where you need it.
The Red Clix grind grade dial is also available on its own as a replacement.
The short version
Thirty-five pounds, twenty minutes, and twice the resolution in the range where resolution matters. If you pull espresso, fit it. If you brew filter, save your money for coffee.
