Questions

The full plan is free forever with no account - every phase, every part, every price, and the share page. We earn a commission when you buy some parts through our links. Pro at $5 a month adds the things that only matter once you are running a build over a season.

Not to build a plan. You need one to save a build, and the Free tier saves two.

No, and we will not. Fitment errors are behind the large majority of performance-parts returns, usually because of regional variants, mid-year production changes, or a part that fits a standard car but not a modified one. Every warning carries a confidence level - verified on this chassis, community-reported, or general principle - and where we are unsure we say to measure.

No. They are market ranges with the date we checked them, shown on every part. We do not have a price feed, and a range you can trust beats a number we would have to invent.

Because the cheapest phase protects everything after it, and because most beginner failures start in phase 0 rather than in the modifications. Diff first, suspension next, angle after that, power last is close to unanimous in the community, and we link the sources.

Mark the slot as owned. It stays in the plan so the order still reads correctly and the warnings still know it is there, but it costs nothing in the total.

25 platforms. 15 have full sourced depth; the rest work in the planner but are kept out of search until they reach the same standard.

Yes, every build gets a public page, and anyone can fork it and change it. Pro adds private builds if you would rather not.

Possibly - tell us which one. Adding a chassis means writing its weak points, buying checklist, offset window and slot notes to the same standard, so it takes real work rather than a database row.

Affiliate commission on some parts links, disclosed on every page, plus Pro and Shop subscriptions. Parts with no affiliate programme are still listed with a plain link so the plan is never shaped by what pays. Nobody can buy placement.

No. It is build planning. Safety equipment requirements vary by organiser and region, certifications expire on paper, and your series’ rulebook is the authority - not us. Where we mention a safety item we tell you to check the rulebook, because we mean it.

One person. There are no testimonials or customer logos on this site because it launched recently and inventing them would undercut the one thing it is selling.