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Product Details
| Part Number: | SYN-K20-1B |
| Brand: | SynchroTech |
| Transmission: | Manual |
Synchrotech SYN-K20-1B – Brass Synchro (1st/2nd Gear): This precision-engineered brass synchronizer ring is designed specifically for the 1st or 2nd gear in Honda and Acura K-Series 6-speed manual transmissions.
Vehicle Fitment:
Compatible with a variety of K-Series models, including:
- 2002–2015 RSX (Base & Type-S), TSX, ITR, CTR
- Civic Si (K20/K24; EP3, FN2, FD2 variants)
- Captures a broad range of popular Honda performance models.
Features:
- High-Quality Brass Construction: Made from durable brass alloy, offering natural lubrication, stable wear characteristics, and reliable synchronization—ideal for maintaining smooth, factory-like shifts under moderate to aggressive driving conditions.
- Triple-Cone Design for Enhanced Synchronization: Scientifically engineered with a multi-cone layout tailored for tougher gears—delivering refined shift engagement when it matters most.
- Selective Gear Application: Designed for partial rebuilds or upgrades, this synchro ring allows you to replace or reinforce synchronization in 1st and 2nd gear without needing a full set or master kit—helping you target high-wear areas efficiently.
The Synchrotech SYN-K20-1B Brass Synchro (1st/2nd Gear) is a targeted, high-quality part for enhancing the shifting smoothness and strength of Honda/Acura K-Series transmissions. With its robust brass construction, triple-cone precision, and affordable pricing, it’s an ideal upgrade for enthusiasts aiming to reinforce their transmission’s most used gears.
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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