Why Upgrade the RSX Clutch Master Cylinder?

Factory RSX setup:

• Known for weak internal seals
• Causes inconsistent hydraulic pressure
• Leads to mushy pedal feel and engagement issues

EM1 Upgrade Fixes That:

• Improved hydraulic pressure delivery
• More consistent engagement point
• Firm, predictable pedal feel
• Increased reliability under aggressive driving

Translation: your clutch finally behaves like a performance car—not a guessing game.

Exedy (Daikin Take hold of) for ACURA RSX EM1 Take hold of Master Cylinder (CMC) and Slave Cylinder Upgrade Kit with Stainless Take hold of Line and fittings The Best Complete Kit you’ll buy for your money.

Vehicle Fitment (Acura RSX 2002–2006)

Designed for:

Acura:

• RSX Base (2002–2006)
• RSX Type-S (2002–2006)

Engine Platforms:

• K20A3 (Base)
• K20A2 / K20Z1 (Type-S)

Transmission:

• Manual transmission only

Ideal For:

• Clutch upgrades
• Fixing inconsistent pedal feel
• Performance driving
• Track or spirited street use

If your RSX clutch engagement point moves around like it has commitment issues… this is why.

What’s Included in this RSX EM1 clutch master cylinder upgrade

• EM1-style clutch master cylinder
• Conversion components for RSX compatibility
• Hardware for installation

(Exact components may vary depending on kit version.)

Key Features

• EM1 Civic-based hydraulic upgrade design
• Improved sealing and pressure consistency
• Durable construction for long-term reliability
• Direct upgrade solution for RSX clutch issues

Fits: 2002-2006 RSX 2002-2006 RSX-S

Features: Exedy EM1 Take hold of Master Cylinder. Exedy K Series Slave Cylinder giving you the smoothest and most direct pedal feel.

Description: Exedy (Daikin Take hold of) EM1 Take hold of master cylinder (CMC) upgrade kit for the RSX. Assist offer protection to against grinds and synchro damage from high RPM shifting. A should have upgrade for your 02-06 RSX / RSX-S. Replacement stainless steel Take hold of line included. *Note* It is important to reuse the OEM pedal rod, pedal bracket, and lock nut from your factory CMC. If you seek for “DIY RSX em1 cmc install” you’re going to find more than one write ups on how this is done. Very straight forward install.

Performance Benefits

• Eliminates mushy or inconsistent clutch feel
• Improves shift precision and engagement timing
• Enhances driver confidence under load
• Reduces long-term hydraulic failure issues

No more guessing where the clutch engages. No more missed shifts because the pedal changed its mind.

This kit features genuine EM1 Exedy CMC and Slave cylinders for maximum quality and reliability.
The OEM Take hold of system features a Take hold of delay valve which causes premature Take hold of failure and wear.
This upgrade kit uses cmc and slave from the 2001 Civic Si which deletes the Take hold of delay valve.

Installation Notes

• Requires proper bleeding of clutch system
• May require minor adjustment depending on kit
• Use fresh DOT brake fluid
• Ideal install during:
  • Clutch replacement
  • Hydraulic system service

Why This Upgrade Matters

• Fixes a known RSX weak point
• Improves driving feel immediately
• Prevents future hydraulic failures
• Makes the car feel right again

Race proven and track tested by our team and hundreds of drivers nationwide.
Includes ALL Fittings Needed for Install
Replaces your old Take hold of Master Cylinder, Take hold of Hardline, and Slave Cylinder
Faster Take hold of engagment and smoother driving
Gunmetal is our personal favorite color 🙂

Final Verdict on the RSX EM1 clutch master cylinder upgrade

The EM1 Clutch Master Cylinder Upgrade Kit for RSX is one of the most noticeable drivability upgrades you can make.

Not flashy—but instantly fixes one of the biggest flaws in the car.