2021 SUBARU WRX STI - In Stock Filter Options - Vendor In Stock Filter Options Parts & Accessories

Competition Clutch Stage 2 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - 15030-2100

Clutch Kit, Stage 2, Organic, 1 in. Diameter Shaft, 24-Spline, 9.500 in. Diameter Disc, Throw-out Bearing, Alignment Tool, Subaru, Kit

Part Number: CCX-15030-2100

Not Yet Reviewed

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Exedy OE Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - FJK1000

Clutch Kit, Stock Replacement, OEM, Organic Disc, 24-spline, Pressure Plate, Subaru, Kit

Part Number: EXY-FJK1000

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

EBC Brakes - Brake Rotor and Pad Combos for 2018-2021 WRX STI - S12KF1819

DP31591C + RK2122XD

Part Number: EBC-S12KF1819

Not Yet Reviewed

Estimated Ship Date: May 26, 2026 if ordered today

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Estimated Ship Date: May 26, 2026 if ordered today

Competition Clutch Stage 3 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - 15030-2250

Clutch Kit, Stage 3, Ceramic, 1 in. Diameter Shaft, 24-Spline, 9.500 in. Diameter Disc, Throw-out Bearing, Alignment Tool, Subaru, Kit

Part Number: CCX-15030-2250

Not Yet Reviewed

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CSF Racing Radiators 7042O

Radiator, 08-14 Subaru Impreza w/ built-in oil cooler (InclWRX & STI(Multi-fit COMBO UNIT)

Part Number: CSF-7042O

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

COBB Tuning 1050x Fuel Injectors 312150

Fuel Injector, 1050x, 1065 cc/min, Top Feed, Subaru, Gasoline, Flex, E85, Set of 4

Part Number: CBT-312150

Not Yet Reviewed

Estimated Ship Date: Apr 23, 2026 if ordered today

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Estimated Ship Date: Apr 23, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Injector Dynamics ID1050x Fuel Injectors 1050.34.14.15.8

5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Competition Clutch Stage 3 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - 15030-2600

Clutch Kit, Stage 3, Ceramic, 1 in. Diameter Shaft, 24-Spline, 9.500 in. Diameter Disc, Throw-out Bearing, Alignment Tool, Subaru, Kit

Part Number: CCX-15030-2600

Not Yet Reviewed

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Dorman Driveshafts for 2015-2021 WRX STI - 986-058

Drive Shaft, Rear Driveshaft Assembly

Part Number: RNB-986-058

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

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Estimated Ship Date: Apr 28, 2026 if ordered today

XClutch Stage 1 Extra Heavy-Duty Clutch Kits for 2004-2014 IMPREZA, 2007-2009 LEGACY, 2015-2021 WRX STI - XKSU24001-1AX

Clutch Kit, Stage 1 Extra Heavy-Duty, 1.000 in. - 24-spline, One Organic Disc, Pressure Plate, Throwout Bearing, Subaru, Kit

Part Number: XCL-S0016

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

SPL Suspension Camber Arms SPL RLL FRS

Camber Arms, Rear Lower, Billet Aluminum, Black, Subaru, Toyota, Pair

Part Number: PSU-SPL-RLL-FRS

Not Yet Reviewed

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Rigid Industries 360 Series LED PRO Lights 37119

Auxiliary Lights, 360 PRO Series, White LED, Black Aluminum Housing, Yellow Lens, SAE Compliant, Subaru, Pair

Part Number: RGD-37119

Not Yet Reviewed

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ACT Xtreme Pressure Plates for 2004-2014 IMPREZA, 2007-2009 LEGACY, 2015-2021 WRX STI - SB019X

Pressure Plates, ACT Xtreme Pressure Plates, Performance, Diaphragm, Subaru, Each

Part Number: ACL-SB019X

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

XForce Exhaust Systems for 2015-2021 WRX STI - ESSW28AS

Exhaust System, Varex, 304 Stainless Steel,Rear Axle-Back, Split Rear, Natural, Subaru, Kit

Part Number: XFO-ESSW28AS

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Action Clutch Stage 1 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - ACR-1802

Clutch Kit, Stage 1 Clutch, Single Disc, Full Face, Sprung Hub, Diaphragm Pressure Plate, Alignment Tool, Bearings, Subaru, 2.5L, Kit

Part Number: ANH-ACR-1802

Not Yet Reviewed

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Eibach Anti-Roll Sway Bar Kits for 2015-2021 WRX STI - 7728.320

Eibach Anti-Roll Sway Bar Kits for 2015-2021 WRX STI - 7728.320

Sway Bars, Anti-Roll Sway Bar Kit, Front and Rear, Steel, Red, Subaru, Kit

Part Number: EIB-7728320

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

COBB Tuning SF Intake and Air Box Systems for 2018-2021 WRX STI - SUB00002IA

Air Intake Kit, SF Intake and Airbox System, Gray Cotton Gauze Filter, Black Silicone Tube, Subaru, 2.5L, Kit

Part Number: CBT-SUB00002IA

Not Yet Reviewed

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Mahle PowerPak Piston and Ring Kits for 2015-2021 WRX STI - 930285417T

Piston and Ring Kit, PowerPak, Thermal Barrier Coated, Forged, Subaru, 2.5L, Kit

Part Number: MLE-930285417T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Action Clutch Stage 4 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - ACR-1805

Single Disc Stage 4 Clutch Kit (1MD) for Subaru WRX STI 2004-2021 2.5L DOHC (EJ257) Turbo AWD

Part Number: ANH-ACR-1805

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

XClutch Stage 1 Clutch Kits for 2004-2014 IMPREZA, 2007-2009 LEGACY, 2015-2021 WRX STI - XKSU24001-1A

Clutch Kit - Stage 1 Single Sprung Organic Clutch Disc

Part Number: XCL-XKSU24001-1A

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

XClutch Stage 2 Clutch Kits for 2004-2014 IMPREZA, 2007-2009 LEGACY, 2015-2021 WRX STI - XKSU24001-1B

Clutch Kit - Stage 2 Single Sprung Ceramic Clutch Disc

Part Number: XCL-XKSU24001-1B

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

DeatschWerks X2 Series Fuel Pump Plumbing Kits 6-615

Fuel System Plumbing Kits, X2 Series, CPE Lined Hose, Stainless Steel, -8 AN Feed, -6 AN Return, with Pressure Regulator, Subaru, 2.5L, Kit

Part Number: DWK-6-615

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Mishimoto Intercoolers for 2008-2014 IMPREZA, 2015-2021 WRX STI - MMTMIC-STI-08SLBL

Intercooler Kit

Part Number: MIO-TMISTI08SLBL

Not Yet Reviewed

Estimated Ship Date: Apr 22, 2026 if ordered today

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Estimated Ship Date: Apr 22, 2026 if ordered today

Rotiform R110 BLQ Silver Machined Wheels 19x8.5

Wheels, R110 BLQ Series, Aluminum, Gloss Silver Machined Finish, 19 in. x 8.5 in., 5 x 114.3mm/4.5 in. Bolt Circle, 6.25 in. Backspace, Each

Part Number: RTF-R11019856538

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

ACT Prolite Xact 124-Tooth Flywheel 600240

Flywheel, Forged Steel, 124-Tooth, 11.8 lb., Internal Engine Balance, Subaru, 2.5L, Each

Part Number: ACL-600240

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Action Clutch Stage 2 Clutch Kits for 2004-2014 IMPREZA, 2015-2021 WRX STI - ACR-1803

Single Disc Stage 2 Clutch Kit (1KS) for Subaru WRX STI 2004-2021 2.5L DOHC (EJ257) Turbo AWD

Part Number: ANH-ACR-1803

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

2021 SUBARU WRX STI Parts and Accessories