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Product Details
| Part Number: | SYNK20-3B |
| Brand: | SynchroTech |
| Transmission: | Manual |
Synchrotech SYN-K20-3B – Dual-Cone Brass Synchro (3–4 / 5–6 Gear). A premium brass synchronizer ring engineered specifically for the 3rd, 4th, and select 5th or 6th gears in Honda/Acura K-Series 6-speed manual transmissions.
Fitment:
- Acura RSX (2002–2006), including Base & Type-S
- Honda Civic Si (2002–2008)
- JDM Integra Type R / Civic Type R (2001–2006)
- Acura TSX (2004–2008)
- Applicable to gears 3rd or 4th continuously, and 5th or 6th in early 6-speed (2002–2004).
Features:
- Dual-Cone Brass Design: Incorporates a dual-cone configuration—providing more surface contact, improved lock angle, and updated tooth patterns for smoother, more precise gear engagement.
- Premium OEM Replacement Quality: Brass construction ensures durability, consistent lubrication, and a direct-fit replacement for factory synchro rings.
The Synchrotech SYN-K20-3B is a high-quality, dual-cone brass synchro ring crafted for the 3rd, 4th, and optionally 5th/6th gears in K-Series 6-speed transmissions. Whether you're restoring shift performance or reinforcing critical gears, this part offers robust construction, precise engagement, and excellent value for Honda and Acura enthusiasts.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim | Notes |
|---|---|---|---|---|
| 2002 | Acura | RSX | Base | Manual |
| 2002 | Acura | RSX | Type-S | Manual |
| 2002 | Honda | Civic | Si | Manual |
| 2003 | Acura | RSX | Base | Manual |
| 2003 | Acura | RSX | Type-S | Manual |
| 2003 | Honda | Civic | Si | Manual |
| 2004 | Acura | RSX | Base | Manual |
| 2004 | Acura | RSX | Type-S | Manual |
| 2004 | Acura | TSX | Base | Manual |
| 2004 | Honda | Civic | Si | Manual |
| 2005 | Acura | RSX | Base | Manual |
| 2005 | Acura | RSX | Type-S | Manual |
| 2005 | Acura | TSX | Base | Manual |
| 2005 | Honda | Civic | Si | Manual |
| 2006 | Acura | RSX | Base | Manual |
| 2006 | Acura | RSX | Type-S | Manual |
| 2006 | Acura | TSX | Base | Manual |
| 2006 | Honda | Civic | Si | Manual |
| 2007 | Acura | TSX | Base | Manual |
| 2007 | Honda | Civic | Si | Manual |
| 2008 | Acura | TSX | Base | Manual |
| 2008 | Honda | Civic | MUGEN Si | Manual |
| 2008 | Honda | Civic | Si | Manual |
| 2009 | Honda | Civic | Si | Manual |
| 2010 | Honda | Civic | Si | Manual |
| 2011 | Honda | Civic | Si | Manual |
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