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  • ACT Heavy Duty Race Rigid 4 Pad Clutch Kit | 2004-2020 Subaru WRX/STi (SB10-HDR4)
  • ACT Clutch 1 Year Manufacturer Warranty
  • ACT Heavy Duty Race Rigid 4 Pad Clutch Kit | 2004-2020 Subaru WRX/STi (SB10-HDR4)

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    ACT Clutch Kits & Flywheels

    ACT Heavy Duty Race Rigid 4 Pad Clutch Kit | 2004-2020 Subaru WRX/STi

    PART# ACT SB10-HDR4
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    Email - sales@maperformance.com

    Phone 1-888-627-3736



    $ 590.00   $ 756.00
    You Save 22% ($ 166.00)

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    Looking for a flywheel too? Add one below!

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    ACT Street-Lite Flywheel | 2004-2020 Subaru STI (600235)
    ACT Street-Lite Flywheel | 2004-2020 Subaru STI (600235) 
      $357.00
    ACT XACT Prolite Flywheel | 2004-2020 Subaru STI (600240)
    ACT XACT Prolite Flywheel | 2004-2020 Subaru STI (600240) 
      $384.00
    Default Title ACT Heavy Duty Race Rigid 4 Pad Clutch Kit | 2004-2020 Subaru WRX/STi (SB10-HDR4) - ACT SB10-HDR4 $ 590.00
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    ACT 2004-2020 Subaru WRX STI / Legacy Spec.B HD-M/Race Rigid 4 Pad Clutch Kit

    SB10-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance.

    ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

    Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance. It provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications. Monoloc's hardened chrome-moly steel construction will provide years of service.

    Features

    • Torque Capacity (ft/lbs.): 660
    • Light to moderate pedal effort, aggressive engagement, increased gear rattle, confidence during hard shifts
    • Moderate friction life, extended by ACT's exclusive diaphragm design, dramatic improvement in release mechanism life, rigid design may increase spline wear
    • Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance, major improvement in release mechanism
    • Recommended for race use only
    • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc

    Applications

    • 2004-2020 Subaru WRX STI
    • 2007-2009 Subaru Legacy GT spec.B (see * below)
    • *240mm
    • *6 speed applications only
    • *Must use ACT or factory flywheel for the 2004 and newer WRX STi

    What's in the box?

    • 4240018 - 4 Pad Rigid Race Disc
    • AT90 - Alignment Tool
    • PB1004 - Pilot Bearing
    • RB601 - Release Bearing
    • SB019 - P/PL-M Heavy Duty Pressure Plate
    • Installation Instructions!

    Specifications

    • Description: HD-M/Race Rigid 4 Pad
    • Torque Capacity (ft/lbs.): 660
    • Torque Capacity Over OE: 86%
    • Disc Type: Race Disc
    • Spline Count: 24
    • Spline Size (in.): 1
    • Disc Diameter (in.): 9.4
    • Disc Diameter (mm.): 240
    • Pressure Plate Type: Heavy Duty
    • Product Weight (lbs.): 15.9

    ACT 2004-2020 Subaru WRX STI / Legacy Spec.B HD-M/Race Rigid 4 Pad Clutch Kit

    SB10-HDR4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance.

    ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

    Monoloc is a one-piece, direct replacement or upgrade to the standard, two-piece wedge collar and wire ring featured in pull-type clutches. The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance. It provides uniform loading on the bearing and pressure plate to assure proper alignment, regardless of driver influence or vehicle modifications. Monoloc's hardened chrome-moly steel construction will provide years of service.

    Features

    • Torque Capacity (ft/lbs.): 660
    • Light to moderate pedal effort, aggressive engagement, increased gear rattle, confidence during hard shifts
    • Moderate friction life, extended by ACT's exclusive diaphragm design, dramatic improvement in release mechanism life, rigid design may increase spline wear
    • Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance, major improvement in release mechanism
    • Recommended for race use only
    • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability, includes ACT's patented Monoloc

    Applications

    • 2004-2020 Subaru WRX STI
    • 2007-2009 Subaru Legacy GT spec.B (see * below)
    • *240mm
    • *6 speed applications only
    • *Must use ACT or factory flywheel for the 2004 and newer WRX STi

    What's in the box?

    • 4240018 - 4 Pad Rigid Race Disc
    • AT90 - Alignment Tool
    • PB1004 - Pilot Bearing
    • RB601 - Release Bearing
    • SB019 - P/PL-M Heavy Duty Pressure Plate
    • Installation Instructions!

    Specifications

    • Description: HD-M/Race Rigid 4 Pad
    • Torque Capacity (ft/lbs.): 660
    • Torque Capacity Over OE: 86%
    • Disc Type: Race Disc
    • Spline Count: 24
    • Spline Size (in.): 1
    • Disc Diameter (in.): 9.4
    • Disc Diameter (mm.): 240
    • Pressure Plate Type: Heavy Duty
    • Product Weight (lbs.): 15.9

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    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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