Spares Inventory is the list of what is actually in your toolbox. Each line records the kind of part, a name, its spec, how many you have, where it is stored and which kart it fits. Kinds cover sprockets, chains, axles, tyre sets, rims, seats, engine parts, tools and other.
It answers the question every karter asks at 7 am on race day: do I already own a 78-tooth rear sprocket? Search matches the name, spec, storage location and kart, and a row of chips filters by kind, so the answer takes seconds instead of a rummage through the van. A line at zero shows its count in red, so you can see what needs reordering.
Quantities stay honest with the one fewer and one more buttons on every line: minus when you fit a part, plus when you buy one. Tap a line to edit it and long-press to delete it. The spec field keeps like-for-like parts apart, for example "78T, 219 pitch", "M-grade" or "106 links".
The inventory also feeds other tools. The Gear Ratio calculator lists the tooth counts of Sprocket lines you have in stock under "Rear sprockets you own", so race-day gearing starts from what is in the box. If your karts are in your AVB RaceLabs profile, Sync from profile adds each kart's engine as an engine-part line and imports your profile tyre sets into Tyre Sets; it needs you signed in and online. Everything else runs on the phone with no signal, and a button in the top bar jumps to Tyre Sets.
