Skip to content

Subaru WRX and STI Parts: Clutch, Exhaust and Coilovers

Subaru WRX and STI performance parts: clutch kits, cat-back exhausts, coilovers and lighting from ACT, AWE, Invidia, MAPerformance, Tomei, BC Racing and Molded Innovations, plus built EJ25 and FA20/FA24 short blocks and long blocks. Each listing names the model years it fits.

WRX and STI generations use different engines, so check the year range before you order: the EJ255 and EJ257 powered the 2006-2014 WRX and 2004-2021 STI, the FA20 the 2015-2021 WRX and the FA24 the 2022-on WRX. See WRX generations and years, EJ255 vs EJ257 and FA20 vs FA24.

Short blocks and long blocks (13)

Part Price
Turn In Concepts Stage 3+2 Track Closed Deck EJ257 Short Block 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $6,799.00
IAG Performance 950 Series Destroked 2.35L EJ25 Short Block 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $6,999.99
IAG Performance 1000 Series FA24 Closed Deck Short Block 2022-2026 WRX $6,999.99
IAG Performance 1000 Series FA20 Closed Deck Short Block 2015-2021 WRX $6,999.99
IAG 1150 Series EJ25 Short Block 06-14 WRX / 04-21 STI / 04-13 Forester XT / 05-09 Legacy GT $9,499.99
IAG Performance 1150 Series High Compression Closed Deck EJ25 Short Block 2006-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $9,499.99
IAG Performance 1150 Destroked 2.35L Closed Deck EJ25 Short Block 2006-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $10,499.99
IAG Performance 750 Closed Deck EJ25 Long Block w/ IAG 750 Heads 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $12,749.99
IAG Performance 950 Closed Deck EJ25 Long Block w/ IAG 950 Heads 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $13,999.99
IAG Performance 950 Series 2.35L Destroked Long Block w/ IAG 950 Heads 2002-2014 WRX / 2004-2021 STI / 2004-2013 Forester XT / 2005-2009 Legacy GT $14,599.99
IAG Performance 600 Series FA20 DIT Long Block 2015-2021 WRX $16,499.99
IAG / Crest CNC Stage X Billet EJ25 Subaru Short Block 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT $17,999.99
IAG Performance 800 Series FA20 DIT Long Block 2015-2021 WRX $18,999.99

Clutch kits (5)

Part Price
ACT Heavy Duty Performance Street Disc Clutch 2004-2021 STI / 2007-2009 Legacy GT Spec B $833.00
ACT Heavy Duty Performance Street Disc Clutch Kit | 2004-2021 Subaru WRX STI (SB10-HDSS) $833.00
ACT HD Performance Street Sprung Clutch Kit | 2006-2025 Subaru WRX (SB11-HDSS) $1,204.00
ACT Heavy Duty Performance Street Disc Clutch Kit w/ Flywheel 2006-2026 WRX / 2005-2012 Legacy GT / 2006-2008 Forester XT $1,204.00
ACT Xtreme Clutch Kit w/ Streetlite Flywheel | 2006-2021 Subaru WRX (SB11-XTSS) $1,254.00

Worn clutch or more power? Read signs of a bad clutch and how long a clutch lasts.

Exhaust systems (5)

Part Price
MAPerformance Catback Exhaust System | 2015-2021 Subaru WRX/STI (WRX-4G-CB-REV2) $999.99
Tomei Expreme Ti Cat-Back Exhaust | 2008-2021 Subaru WRX Sedan and 2011-2021 Subaru WRX STI Sedan (TB6090-SB02C) $1,161.00
AWE Track Edition Catback Exhaust w/ Diamond Black Tips 2011-2021 WRX Sedan / 2011-2021 STI Sedan $1,195.00
Tomei Expreme Ti Titanium Catback Exhaust 2008-2021 WRX Sedan / 2011-2021 STI Sedan $1,290.00
Invidia R400 Gemini Quad Tip Exhaust System | 2015-2021 Subaru WRX/STI (HS15STIGM4XX) $1,458.70

Compare every cat-back exhaust system we carry.

Coilovers and suspension (2)

Part Price
BC Racing BR Series Coilovers Subaru Models $1,195.00
BC Racing BR Series Extreme Low Coilovers Subaru Models $1,345.00

New to coilovers? Read what are coilovers and how to adjust them and coilovers vs lowering springs.

Lighting (1)

Part Price
Molded Innovations Odyssey Series Sequential LED Headlights w/ Clear Reflector 2015-2017 WRX / 2015-2017 STI / 2018-2021 WRX Base & Premium $934.99

Fitting new headlights? Read how to adjust headlights.

More on Subaru engines

Every built block is also listed on its engine page: EJ25 short blocks and long blocks (EJ255 and EJ257) and FA20 and FA24 short blocks and long blocks. Planning more power? Read closed deck vs open deck first.

Before you order

  • Body style matters for exhausts: several cat-back systems fit the sedan only, as stated in the listing name.
  • Clutch and flywheel: match the kit to your transmission and year; some kits include a lightweight flywheel and some reuse yours.
  • Emissions rules: check your state’s rules for any part that changes the exhaust or engine before you install it.

See also: ACT clutches · BC Racing coilovers · Subaru BRZ and Toyota GR86 parts.

More guides: WRX exhaust guide · what is a boxer engine? · stage 1 vs stage 2 clutch · projector vs reflector headlights · WRX vs STI · LED vs halogen headlights.

Shipping is a flat $80.00 per order to US addresses, with 15-day free returns. Not sure which one fits? Ask a parts specialist.