The Undercut Racing Manager Parts and factory tier list

This parts tier list ranks where money and Work Units go, not a catalogue of licensed wings. You manufacture eleven components. The engine is purchased. Hidden traits sit on top of quality. Departments set the baseline and the ceiling. If that sentence is new, read car development first.

Grades assume a Medium career in 0.5.4. A Large team can buy two S items in one pre-season. A Small team should buy none until prize money exists.

S — spend here first

Marketing (department). It does not add a front-wing point. It pays for the factory. Visibility, negotiation speed, deal quality, income multiplier, supplier discounts. Level 1 hides half the sponsor pool and haircuts contracts. That is an S-tier problem.

Engineering (department). Repair efficiency and the Work Unit pool that keeps a damaged weekend from deleting development. 0.5.4 also made factory performance read honestly; a weak plant is no longer a fake zero with extra headroom. Believe Engineering.

Negative trait removal on a fitted race part. A confirmed Overheating gearbox or High Drag floor on the car that starts on Sunday is worth a Design project immediately. A green quality bar with a red trait is not S-tier; the trait is the grade.

Tyre supplier with heat resistance and endurance. You cannot manufacture this. A bad tyre deal turns every Soft stint into a cliff. It is a part of the car even if it lives in the Suppliers app.

A — first-team car

Aero specialist — front and rear wing weights are large. On a downforce venue this is lap time. On a power venue it is still A, not automatic S.

Handling specialist — brakes and suspension. Late-braker drivers and lockup-prone traits make this A even on low-downforce calendars.

R&D department once you are ceiling-capped. A until then it is C. Potential you cannot climb is a trophy cabinet.

Engine supplier (the actual power unit). Power, endurance, reliability. Shop this like an S if your Chassis is already honest and you are traction-limited. Otherwise A: a hot engine in a mule still DNFs.

Improve on the fitted race-spec parts that are short of potential. This is how you win the current season. It is A because it pays this Sunday, unlike a department level that pays forever starting next year.

B — honest points

Chassis specialist — body and floor. Needed, slower to show off than Aero.

Engine department (ancillaries) — gearbox, electronics, fuel system, cooling. People overrate it because of the name. B unless cooling or gearbox traits are killing you, in which case the trait is S and the department is the tool.

Fuel supplier. One main stat: consumption. A great fuel deal enables strategy swings. A bad one forces extra kilograms. B for most careers, A if you live on two-stops.

Spare race-spec wings in the truck. Weekend loadout cap is real. B-tier insurance. Not exciting. Exciting is a puncture without a spare.

C — later

Sprinkling four specialists to level 3. Looks balanced. Loses to one specialist at 6.

Driver Academy building as a rescue plan. C as a luxury when the car already scores. D as a panic buy under the cash gate. Details on the academy page.

Cosmetic quality rolls you cannot fit this weekend. Shelf parts are not pace.

Private Testing without a question. Testing is A when you are hunting a trait or potential. C when you run it because the tab exists.

D — vanity and traps

Buying R&D at level 1 Engineering. Ceiling without repairs.

Expecting the Engine department to raise supplier power. It will not.

Ignoring worn-part warnings. 0.5.4 warns before a weekend is ruined. Ignoring that warning is D-tier management.

Positive-looking quality with Overweight plus Overheating. The sheet lies until practice. Grade after discovery.

Spending the last dollar of the war chest on a level 9 department. Running costs are forever. Bankruptcy is a DNF for the save.

Hidden trait modifiers

Treat traits as letter shifts:

• Lightweight, Low Drag, Ground Effect, draft bonus — plus a letter on the right circuits.
• Overweight, High Drag, Overheating, lockup, gearbox flaws — minus a letter until redesigned.
• Dirty-air bonus — plus a letter if you race in trains; minus if you lead in clean air and paid for the wrong character.

Discovery is faster in 0.5.3+ and grouped by kind. Do not freeze this list in your head across a patch. Updates will shuffle wear and reliability again.

Sunday translation

A-tier Aero does not choose compounds. If the tyre supplier is D, the race strategy page still tells you to Hard-first. Factory grades set the cliff; pitwall grades decide whether you hit it.

When in doubt, Repair, then Improve the part that lost time, then Design the trait that will still be there at GP 16. Departments wait for pre-season. That order is the tier list in motion. For the long form, stay on car development. For who sits in the car, use the driver tier list.