Hybrid Racing Clutch Master Upgrade for Accord/Civic/RSX/TSX

Hybrid Racing Clutch Master Cylinder Upgrade - Civic Si, RSX, EP3 & TSX (EM1 CMC Bolt-On Kit)

This is the clutch master cylinder upgrade to run if you're driving an 8th or 9th gen Civic Si, an EP3 Civic Si, an RSX or RSX Type S, or a TSX. It swaps your factory clutch master cylinder for our EM1 CMC kit, which gives you a direct, consistent pedal and cleaner shifts at high rpm. The big news is that it's now a true bolt-on. We designed a proprietary CMC clevis so the EM1 master cylinder drops right in on these chassis, no more pulling the clevis and rod out of your factory cylinder and transferring them over to get it to work. Open the box, bolt it on, bleed the system, and you're done.

Now A Real Bolt-On Solution

The old way of doing this swap meant removing the factory clevis and pushrod from your original master cylinder and installing them into the Hybrid Racing CMC before anything would line up. It worked, but it was extra labor and an easy step to get wrong. Our proprietary clevis design ends that. The EM1 CMC now bolts directly to your 8th gen Civic Si, 9th gen Civic Si, EP3 Civic Si, RSX, or TSX with no parts transferred from your factory cylinder. It's the cleanest version of this upgrade we've offered.

What's In The Kit

• OE Genuine JDM clutch master cylinder
• Stainless steel braided clutch line with fittings
• Stand-off for mounting the clutch line
• Grease to lubricate the clevis pin and prevent NVH

No additional replacement parts are required, and nothing carries over from your factory CMC. The kit is complete for the master cylinder side of the system.

Aluminum Piston Body, Not Plastic

The OE Genuine JDM master cylinder in this kit uses an aluminum piston body in place of the plastic assembly found in older units. The plastic assembly can deflect under racing conditions or when you're running a stronger pressure plate, and that deflection costs you pedal consistency when you need it most. The aluminum body takes the load and keeps the pedal feeling the same on the street or at the track.

Why We Remove The Damper

In 2002, Honda added a damper and delay valve to the clutch hydraulic system on US-model K-series cars. The damper sits in the CMC body casting and is easy to spot by its external triangular section. It reduces the vibrations that reach the clutch pedal, which cuts down on cabin NVH and drivetrain feedback. That's fine for a daily driver, but it also mutes the connection between your foot and the clutch.

We remove the damper so you get a direct line to the powertrain. The result is more pedal feedback and better consistency at higher engine speeds and loads, which is what drivers and racers want. The tradeoff is honest: this kit improves pedal feel, but it can make the system slightly noisier under normal driving. If you want to feel exactly when the clutch releases and engages, that's a trade worth making.

Fitment

• 2006-2011 Acura CSX
• 2013-2015 Acura ILX
• 2002-2006 Acura RSX
• 2004-2008 Acura TSX
• 2009-2014 Acura TSX
• 2010-2014 Acura TL
• 2003-2007 Honda Accord (K24 only)
• 2008-2012 Honda Accord (K24 only)
• 2002-2005 Honda Civic Si
• 2006-2011 Honda Civic Si
• 2012-2015 Honda Civic Si
• 2002-2006 Honda CR-V
• 2003-2010 Honda Element

This kit does not work on RHD or V6 fitments. If you've got a K-swapped EG, EK, or DC rather than a factory K-series car, grab our K-Swap Clutch Master Cylinder Upgrade instead, which is built for that application.