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Anti-roll (sway) bar

What does a sway bar do on an RC car? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: sway bar, anti roll bar, roll bar rc, swaybar thickness, front sway bar, rear sway bar, anti-roll bar tuning, stabilizer bar

Exact dimensions. True size, with no printing tolerance added.

sizes
2 in table

Notes

  • An anti-roll bar links left and right wheels so the car rolls less. Stiffening one end reduces that end's grip: a thicker front bar gives less front traction and less off-power steering but quicker response; a thicker rear bar gives less rear traction and more on-power steering (Tekno).
  • Thicker bars at either end reduce chassis roll (CompetitionX).

Anti-roll (sway) bar size chart

parametervalue or rangesource
Thicker frontless front roll and grip, quicker responseTekno setup guide
Thicker rearless rear grip, more on-power steeringTekno setup guide

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Tekno RCTekno RC Setup GuidewebPublisher's page; dimensions are facts
CompetitionXRC Quick Setup GuidewebPublisher's page; dimensions are facts

Xem scan

File coming

No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=anti-roll-bar

Schematic, not to scale.

Fits with

Questions

Want more steering?

Thinner front or thicker rear bar (Tekno).