Expanding your setup up to 8 modules
One channel carries up to eight modules — drivers, pit wall, coach and crew. Here is how the maths works, what to add as the team grows, and how to keep everyone powered through a long race.
The maths
Count endpoints, not boxes.
Everyone on the channel needs a module. The headset is not an endpoint on its own — it needs a module clipped into it, which is the single most common surprise when teams plan a purchase.
| What you have | What it puts on the channel |
|---|---|
| 1 module | One endpoint — a driver's helmet, or the module that goes into someone's headset. |
| Premium Kit | 2 modules + headset + case = one driver and one pit wall. The headset consumes one of the two modules. |
| Starter Kit | 2 modules + headset = one driver and one pit wall. The same endpoints as Premium, without the case. |
| Duo Pack | 2 modules, no headset = two helmets talking to each other. No pit-wall position. |
| Kit + 1 module | Two drivers and a pit wall — the first upgrade most endurance teams make. |
Team shapes
Four setups that cover most teams.
Start from how you actually race, not from a module count. These are the four configurations we see most often in the paddock.
Solo driver + coach — 2 modules
One kit. Driver on track, coach on the pit wall with the headset. The setup that changes a practice day the most.
Endurance, 2 drivers — 3 modules
A kit plus one module. Two helmets ready to go and a permanent pit-wall position, so a swap costs you nothing in comms.
Endurance, 4 drivers — 5 modules
A kit plus three modules. Every driver keeps their own module fitted and charged, so nothing gets passed around in the pit lane.
Team and crew — 6 to 8 modules
Drivers, pit wall, a mechanic and a strategist all on one channel. Eight is the ceiling.
Building the group
Connect more than two modules.
Two modules pair straight to each other. Beyond that the group is built as a chain — each new module joins the one added before it. Start from a clean reset and work through it in one pass.
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Reset every module
Hold the + and KC-PRO button for 5 seconds on each module. The LED flashes purple briefly, then switches to an alternating red/blue light. This clears the existing link and allows a new pairing to be established.
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Switch them all off
Power every module down before you start building the group.
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Power on modules 1 and 2
Only the first two. The rest stay off — they join one at a time, in order.
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Start the link
Hold the big KC-PRO button on module 1, then hold the function button on module 2.
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Wait for the link to complete
Both modules settle to a fading blue light. Modules 1 and 2 are now joined.
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Hand module 2 on
Press the function button on module 2. It is now ready to bring in the next module.
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Add module 3
Power on module 3. Press and hold the big KC-PRO button on module 2, then press the function button on module 3.
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Repeat down the chain
Every further module joins the one added before it: hold the big KC-PRO button on the last module in the group, then press the function button on the new one. Carry on up to eight.
LED reference
Build the whole group in one pass, with every module in front of you and powered off to start. Modules join in order — 2 to 1, 3 to 2, and so on — so this is a workbench job, not something to do in the pit lane between sessions.
Long races
Rotate batteries, not people.
A module gives 6 hours of active use. In a 12- or 24-hour race that means planned swaps — done properly, the channel never drops.
| Step | Action |
|---|---|
| 01 | Keep a spare pair charged and already paired to the channel, powered off, in the case. |
| 02 | Fit a fresh module to the helmet of the driver about to take over — before you call the current driver in. |
| 03 | Call the driver in and make the swap. The incoming driver is already live on the channel. |
| 04 | Put the used module straight onto charge. A full charge takes about an hour. |
| 05 | Run the pit-wall module off USB-C permanently so it never enters the rotation at all. |
Swap to fresh modules every 6 hours. Charging the pit wall in place over USB-C keeps it out of the rotation entirely — one less thing to track at three in the morning.
On the channel
What eight on one channel is really like.
More modules do not mean more complexity — they all join the same conversation. What changes is discipline.
Everyone hears everyone
There are no sub-groups. Eight modules is one open conversation, across up to 2 km.
Talk time is shared
The more people on the channel, the more valuable silence becomes. Agree who speaks to the driver before the session.
They reconnect themselves
Paired modules find each other again on power-up. You pair once, not before every session.
Add as you grow
Modules join the same channel whenever the team expands. Nothing you already own becomes obsolete.
Adding to a group that is already built? Reset every module and walk the chain again from the start — the sequence above begins from a clean reset for exactly that reason.
Not sure what to add?
Tell us your team size and race format and we will spec the modules you actually need — no more, no less.