ACT® (04-21) WRX STI 4 Pad Sprung Race Disc
ACT® (04-21) WRX STI 4 Pad Sprung Race Disc
ACT® (04-21) WRX STI 4 Pad Sprung Race Disc
ACT® (04-21) WRX STI 4 Pad Sprung Race Disc


ACT® (04-21) WRX STI 4 Pad Sprung Race Disc

Regular price$178.00
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    Compatible: (2.5L)

    2004 - 2021 Subaru WRX STI  


    4240518 is a 4-pad spring-centered race disc made with high quality, ceramic friction materials. The engagement is harsher, but shifting is faster. The heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. The race disc features a heat-treated spring steel drive plate and is well-suited for the smaller disc sizes in smaller engines.

    Feel Aggressive engagement, quick shifts, OE to mild gear rattle
    Life Premium ceramic friction materials provide moderate wear rates and high heat tolerance
    Quality Utilizes wraparound spring windows, thicker retainer stampings and a heat-treated, spring steel drive plate to provide support, reduce stress concentrations and increase strength and reliability
    Recommended Use Recommended for race use only
    ACT Difference High burst strength and holds 28% more torque than typical organic materials



    Item Description 4 Pad Sprung Race Disc
    Product Weight (lbs.) 3.2
    Disc Material Ceramic
    Diameter (Inches) 9.4
    Diameter (Millimeters) 240
    Warranty 12 Months 
    SFI 1.1

    Install Guide: