← Subaru WRX (GD/GG, 2002-2007)
Will 2005-07 STI 5x114.3 hub conversion (front knuckles/hub units, rear hubs and bearings) fit a Subaru WRX (GD/GG, 2002-2007)?
Short answer: Yes, with extra parts or work. Reported
Yes, with extra parts or work: This is the 'proper' way to run 5x114.3 wheels on a 5x100 GD, as opposed to adapters.
| Part | 2005-07 STI 5x114.3 hub conversion (front knuckles/hub units, rear hubs and bearings) |
|---|---|
| Vehicle | Subaru WRX (GD/GG, 2002-2007) |
| Years | 2002-2007 |
| Trim / condition | GD WRX and 2004 STI (5x100); 2005-07 STI is already 5x114.3 |
| Verdict | Fits with extra parts or work |
| Confidence | 2 of 3 — Stated by one reasonably reputable source (retailer, shop, magazine). Not independently confirmed. |
| Last verified | 2026-10-22 (date the cited sources were last read) |
Details
This is the 'proper' way to run 5x114.3 wheels on a 5x100 GD, as opposed to adapters. An owner who did the full OEM conversion on a 2004 STI lists what it took: 2005-07 STI front knuckles with their bolt-in hub units, front struts that match the 2005+ knuckle mounting (the rear struts carried over), STI 5x114.3 rear hubs and bearings pressed into the existing rear knuckles, matching dust shields, rotors and a 5x114.3 spare. 2005-only knuckles also use a tie bar and longer bolts that 2006-07 knuckles do not need. Early 2004 STIs with female front axles needed extra transmission side parts. A second forum thread gives a similar list and mentions tone-ring spacers to keep the original axles, and an owner blog notes GD front axles may not seat fully in newer bolt-in hubs without an 8mm CV spacer, so confirm axle compatibility. Forum and blog sources only, and this is suspension/hub work, so it stays at tier 2: verify part numbers for your exact car and have it done or checked by a qualified shop.
Specs
- bolt pattern: 5x114.3
- front: 2005-07 STI knuckles with bolt-in hub units + matching STI front struts
- rear: STI 5x114.3 hubs and bearings pressed into existing rear knuckles
- also: 5x114.3 wheels and spare, rotors
Other suspension fitment for the GD
- WRX sedan 20 mm rear sway bar — Reported to fit
Sources
- 2004 STi 5x100 to 5x114.3 Hub Conversion Info Inside — NASIOC forum (owner parts list with OEM part numbers, 2013, edited 2025) (forum thread; read 2026-10-22; full page read)
- 5x100 to 5x114.3 conversion — IGOTA~STi forum (forum thread; read 2026-10-22; search excerpt only)
- Mod: GR STI Front Knuckles on a GD WRX — b.obsdian (owner build blog, 2021) (editorial; read 2026-10-22; full page read)Used for the axle-seating / 8mm CV spacer caveat.
- WRX & STI Wheel Fitment by Era: 5x100 Bugeye to 5x114.3 VA — ThreePiece.us (wheel retailer blog) (vendor article; read 2026-10-21; full page read)Wheel retailer that recommends the STI hub conversion over adapters.
Summaries are in our own words. Fitment is not guaranteed — disclaimer.
Report a correction — spotted an error or have a better source? Email hello@chassisdex.com.