Civic Si 26mm front sway bar with Si lower control arms
into Civic EK

EM1 Civic Si 1999-2000
→
EK Civic EK 1996-2000

Yes: the Civic Si 26mm front sway bar with Si lower control arms from the Civic Si (1999-2000) fits the Civic EK (1996-2000) — moderate difficulty, modifications required.

Verdict
Fits.
Verified entry · modifications required
Verified ✓
Difficulty
Moderate
Mods
Required
Category
Suspension

Installation notes

Yes — the 26mm front sway bar from a 1999–2000 Honda Civic Si (EM1) fits other 1996–2000 Honda Civics (EK) with the Si front lower control arms and Si shock forks, or on EX/HX arms with Integra Type R endlinks. The 26mm bar is the same size as the 1997–2000 Civic Type R bar and larger than the 22mm EX/HX bar. The EK9.org sway bar guide lists both the arm route and the endlink route. A Honda-Tech owner reports running the Si bar on LX/EX arms with home-made endlinks for about two years.
ModsMods req.

Required modifications

Option 1: fit the 1999–2000 Civic Si front lower control arms and the Si front shock forks with the bar, plus Civic Si endlinks; the Si arms are thicker at the fork, so the fork must change too. Option 2: keep Civic EX/HX front lower control arms and use Integra Type R endlinks. Some owners on LX/EX arms have made custom endlinks from tie-rod ends instead. Mounting bracket provisions exist on all EK bodies.

Caution

Important caveats

  • The Si/Type R style front lower control arms do not work with aftermarket traction or radius-arm systems, which need DX/CX/LX/EX/HX arms.
  • If you fit the Si lower control arms you must also fit the Si front shock forks, because the Si arms are thicker at the fork.
  • Custom endlinks made from tie-rod ends are an owner workaround, not a factory part.
  • No OEM part numbers were confirmed for this entry.

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Reference

D14A1 specs → LEB-H5 specs → B18A1 specs → D16A6 specs → D16Y7 specs → D16Z6 specs → D16W4 specs → EA specs → EC specs → EG specs → EK specs → EM specs → EN specs → EP specs → ER specs → ES specs →

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Sources

2 refs
  1. 01 https://www.ek9.org/index.php?threads/information-about-ek-sway-bars-useful-information.31/
  2. 02 https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/ek-hatch-integra-sway-bars-1185176/
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