Price includes +10% tariff fee charged by Gear-X.
The Gear-X Honda K-Series 1st-4th gear set is a stronger transmission gear set option for K-series builds where the factory gearbox becomes a reliability concern.
This standalone listing is for the V2 Ratios only, so the selected ratio package is clear at checkout and in search results.
Selected Ratios
- 1St Gear: 2.800 (Gear-X notes this V2 1st gear as straight cut)
- 2Nd Gear: 1.894
- 3Rd Gear: 1.304
- 4Th Gear: 1.083
Overview
- Gear-X gear set for Honda/Acura K-Series transmission applications.
- Designed to meet or exceed OEM specifications and tested by Gear-X in-house before release.
- Commonly used as a reliability upgrade around the 450-500hp range; similar Gear-X K-Series gearsets have been used on 600hp+ customer builds.
- Suited for street/track, road race, autocross, drag race, and rally-style builds depending on setup.
Fitment
- 2002-2006 Acura RSX
- 2002-2006 Acura RSX Type S
- 2002-2005 Honda Civic Si
- 2006-2011 Honda Civic Si
- 2012-2015 Honda Civic Si
Always confirm transmission and application compatibility before ordering.