2021 Subaru Wrx-sti Cat Back Exhaust System Upgrades

    WRX STI Upgrades by WRX STI Experts. 

    37 Results

    Invidia R400 Gemini Single Layer Cat Back Exhaust - Titanium Burnt Tips - 2015-2021 Subaru WRX / STI

    51 In Stock

    HS15STIGM4ST

    Invidia R400 Gemini Single Layer Cat Back Exhaust - Titanium Burnt Tips - 2015-2021 Subaru WRX / STI

    5.0(2)
    $1,848.28
    Invidia N1 Full Titanium Twin Outlet Cat-Back Exhaust System - 2015-2021 Subaru WRX

    2 In Stock

    HS15STIDTG

    Invidia N1 Full Titanium Twin Outlet Cat-Back Exhaust System - 2015-2021 Subaru WRX

    5.0(1)
    $1,835.54
    Invidia N1 Dual Cat-Back Exhaust - Stainless Tip - 2015-2021 Subaru WRX / STI / 2014-2018 Forester

    7 In Stock

    HS15STIGTP

    Invidia N1 Dual Cat-Back Exhaust - Stainless Tip - 2015-2021 Subaru WRX / STI / 2014-2018 Forester

    5.0(1)
    $1,269.10
    X-Force Stainless Steel 3" High Flow Cat-Back System with Varex Rear Mufflers - 2011-2021 Subaru WRX / STI Sedan

    ES-SW27-VMK-CBS

    X-Force Stainless Steel 3" High Flow Cat-Back System with Varex Rear Mufflers - 2011-2021 Subaru WRX / STI Sedan

    $1,665.00
    AWE Track Edition Cat-Back Exhaust (Chrome Tips) - 2011-2021 Subaru WRX / STI Sedan

    7 In Stock

    3020-42058

    AWE Track Edition Cat-Back Exhaust (Chrome Tips) - 2011-2021 Subaru WRX / STI Sedan

    5.0(8)
    $1,185.00
    Invidia N1 Racing Single Exit Catback Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI

    14 In Stock

    HS15SW4GST

    Invidia N1 Racing Single Exit Catback Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI

    3.4(5)
    $973.14
    Remark 4" Quad Exhaust - 2015-2021 Subaru WRX / STI

    RK-C4076S-01C

    Remark 4" Quad Exhaust - 2015-2021 Subaru WRX / STI

    5.0(1)
    $1,495.00
    AWE Touring Edition Cat-Back Exhaust (Diamond Black Tips) - 2011-2021 Subaru WRX / STI

    10 In Stock

    3015-43108

    AWE Touring Edition Cat-Back Exhaust (Diamond Black Tips) - 2011-2021 Subaru WRX / STI

    5.0(1)
    $1,600.00
    Mishimoto Stainless Steel 3inch Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    MMEXH-WRX-15

    Mishimoto Stainless Steel 3inch Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    5.0(1)
    $1,398.72
    Invidia Gemini Full Titanium Quad Tip Cat-Back Exhaust - 2015-2021 Subaru WRX / STI

    HS15STI5TG4ST

    Invidia Gemini Full Titanium Quad Tip Cat-Back Exhaust - 2015-2021 Subaru WRX / STI

    5.0(1)
    $2,788.10
    Invidia N1 Resonated Single Exit Cat Back Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI

    5 In Stock

    HS15SW4GTT

    Invidia N1 Resonated Single Exit Cat Back Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI

    $1,111.32
    Invidia N1 Dual Cat-Back Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI / 2014-2018 Forester

    27 In Stock

    HS15STIGTT

    Invidia N1 Dual Cat-Back Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI / 2014-2018 Forester

    5.0(2)
    $1,308.30
    X Force Race Catback Exhaust System with Quad Tip/Hot Dog Resonator - 2011-2021 Subaru WRX / STI

    ESSW28CS

    X Force Race Catback Exhaust System with Quad Tip/Hot Dog Resonator - 2011-2021 Subaru WRX / STI

    $1,125.00
    HKS Legamax Premium Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    70 In Stock

    31021-BF001

    HKS Legamax Premium Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    5.0(2)
    $1,386.00
    AWE Touring Edition Cat-Back Exhaust (Chrome Silver Tips) - 2011-2021 Subaru WRX / STI

    5 In Stock

    3015-42104

    AWE Touring Edition Cat-Back Exhaust (Chrome Silver Tips) - 2011-2021 Subaru WRX / STI

    $1,545.00
    Invidia Q300 Twin Outlet Rolled Titanium Burnt Quad Tip Cat-Back Exhaust - 2015-2021 Subaru WRX / STI

    17 In Stock

    HS15STIG3T

    Invidia Q300 Twin Outlet Rolled Titanium Burnt Quad Tip Cat-Back Exhaust - 2015-2021 Subaru WRX / STI

    5.0(2)
    $1,848.28
    AWE Track Edition Cat-Back Exhaust (Diamond Black Tips) - 2011-2021 Subaru WRX / STI Sedan

    9 In Stock

    3020-43066

    AWE Track Edition Cat-Back Exhaust (Diamond Black Tips) - 2011-2021 Subaru WRX / STI Sedan

    5.0(2)
    $1,235.00
    Cobb Tuning Titanium Cat Back Exhaust System - 2011-2021 Subaru WRX Sedan / STI Sedan

    515140

    Cobb Tuning Titanium Cat Back Exhaust System - 2011-2021 Subaru WRX Sedan / STI Sedan

    5.0(1)
    $2,450.00
    Magnaflow Competition Series 3" Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    19361

    Magnaflow Competition Series 3" Cat Back Exhaust System - 2015-2021 Subaru WRX / STI

    5.0(6)
    $1,264.00
    GrimmSpeed Cat-Back Exhaust System Resonated - 2011-2021 Subaru WRX Sedan / STI Sedan

    070033

    GrimmSpeed Cat-Back Exhaust System Resonated - 2011-2021 Subaru WRX Sedan / STI Sedan

    $2,115.07

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