2015-2021 Subaru STI Engine Parts & Upgrades
Shop 2015-2021 subaru sti engine parts and performance upgrades at JDMuscle. We carry the top brands with guaranteed fitment for your 2015-2021 Subaru STI.
2015-2021 Subaru STI Engine
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![Tomei [08-21 STI / 10-12 Legacy GT] Poncam Camshafts | TOMTA301A-SB02C - JDMuscleCamsTOMTA301A-SB02C](//jdmuscleusa.com/cdn/shop/products/tomei-08-21-sti-10-12-legacy-gt-poncam-camshafts-tomta301a-sb02c-5352335.jpg?v=1781014153&width=220)
Up to $88 offTomei Poncam Camshafts | TOMTA301A-SB02C
Fits: 08-21 STI / 10-12 Legacy GT
Regular price $792.00Sale price $792.00 Regular priceUnit price per$880.00 -
In StockETS 08-14 WRX / 04-21 STI V2 MaxFlow Header Exhaust Manifold | 200-10-EXM-PARENT
Only 9 leftRegular price $1,495.00Sale price $1,495.00 Regular priceUnit price per$1,495.00 -
![PLM Precision Works [08-14 WRX, 07-18 STI, 08-12 LGT, 08-13 FXT] Top Feed TGV Housing & Fuel Rail Kit - JDMuscleFuel RailsPW-TOP-FEED-FR-TGV-SUB-KIT](//jdmuscleusa.com/cdn/shop/products/plm-precision-works-08-14-wrx-07-18-sti-08-12-lgt-08-13-fxt-top-feed-tgv-housing-fuel-rail-kit-9379617.jpg?v=1786515612&width=220)
Up to $110 offPLM Precision Works Top Feed TGV Housing & Fuel Rail Kit
Fits: 08-14 WRX, 07-18 STI, 08-12 LGT, 08-13 FXT
Regular price $435.00Sale price $435.00 Regular priceUnit price per$545.00 -
Forced Performance Blue HTZ Turbocharger - Subaru Models | inc. 2002-2007 WRX / 2004+ STI | 2025050
Regular price $7,120.00Sale price $7,120.00 Regular priceUnit price per$7,120.00 -
In StockInjector Dynamics 02-14 WRX / 07-21 STI ID1050X Top Feed Fuel Injectors | 1050.48.11.WRX.4
Regular price $600.60Sale price $600.60 Regular priceUnit price per$600.60 -
Injector Dynamics 02-14 WRX / 07-21 STI Fuel Injectors Top Feed 1700cc | 1700.48.11.WRX.4
Regular price $1,218.00Sale price $1,218.00 Regular priceUnit price per$1,218.00 -
In StockGrimmspeed 15-17 STI Sound Generator Plug Kit Black | 125015
Only 1 leftRegular price $52.00Sale price $52.00 Regular priceUnit price per$52.00 -
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Black | 112000.2 - JDMuscleBoost Control Solenoid Coversgrm112000.2](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-black-1120002-1721823.jpg?v=1786515851&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Black | 112000.2 - JDMuscleBoost Control Solenoid Coversgrm112000.2](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-black-1120002-8208982.jpg?v=1786515851&width=220)
In StockGrimmspeed Electronic Boost Control Solenoid Cover Black | 112000.2
Fits: 08-21 STI
Only 1 leftRegular price $87.00Sale price $87.00 Regular priceUnit price per$87.00 -
![Remark [15-21 WRX/STI] SPT Style Axle Back w/ Single Wall Polished Tips | RO-TSSP-S - JDMuscleAxle Back ExhaustsremRO-TSSP-S](//jdmuscleusa.com/cdn/shop/products/remark-15-21-wrxsti-spt-style-axle-back-w-single-wall-polished-tips-ro-tssp-s-1657180.jpg?v=1789268292&width=220)
![Remark [15-21 WRX/STI] SPT Style Axle Back w/ Single Wall Polished Tips | RO-TSSP-S - JDMuscleAxle Back ExhaustsremRO-TSSP-S](//jdmuscleusa.com/cdn/shop/files/remark-15-21-wrxsti-spt-style-axle-back-w-single-wall-polished-tips-ro-tssp-s-1702030.jpg?v=1789268292&width=220)
Remark SPT Style Axle Back w/ Single Wall Polished Tips | RO-TSSP-S
Fits: 15-21 WRX/STI
Regular price $456.00Sale price $456.00 Regular priceUnit price per$456.00 -
In StockHKS 2 Layer Dry 200mm Red Replacement Filter Element - Universal
Regular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
In StockGrimmSpeed Front Mount Intercooler Kit - Black Core with Black Piping
Fits: 15-21 WRX
Only 1 leftRegular price $2,319.00Sale price $2,319.00 Regular priceUnit price per$2,319.00 -
In StockWiseco Sport Compact -19cc Pistons | WRX/STI EJ255/257 | K598M
Only 5 leftRegular price $873.99Sale price $873.99 Regular priceUnit price per$873.99 -
Up to $52.52 off
In StockGo Fast Bits Deceptor Pro II Electronically Adjustable Blow Off Valve | T9503
Fits: 02-07 WRX, 04-21 STI, 06-08 FXT
Only 4 leftRegular price $472.68Sale price $472.68 Regular priceUnit price per$525.20 -
In StockHKS 08-21 STI Suction Return Kit | 71002-AF002
Only 5 leftRegular price $43.00Sale price $43.00 Regular priceUnit price per$43.00 -
Up to $0.25 off
In StockRadium Engineering 1/8 NPT Plug - Universal
Only 4 leftRegular price $4.70Sale price $4.70 Regular priceUnit price per$4.95 -
Up to $0.50 off
In StockRadium Engineering Fitting- 6AN ORB TO 5/16 BARB - Universal
Only 17 leftRegular price $9.45Sale price $9.45 Regular priceUnit price per$9.95
![Tomei [08-21 STI / 10-12 Legacy GT] Poncam Camshafts | TOMTA301A-SB02C - JDMuscleCamsTOMTA301A-SB02C](http://jdmuscleusa.com/cdn/shop/products/tomei-08-21-sti-10-12-legacy-gt-poncam-camshafts-tomta301a-sb02c-5352335.jpg?v=1781014153&width=220)
![PLM Precision Works [08-14 WRX, 07-18 STI, 08-12 LGT, 08-13 FXT] Top Feed TGV Housing & Fuel Rail Kit - JDMuscleFuel RailsPW-TOP-FEED-FR-TGV-SUB-KIT](http://jdmuscleusa.com/cdn/shop/products/plm-precision-works-08-14-wrx-07-18-sti-08-12-lgt-08-13-fxt-top-feed-tgv-housing-fuel-rail-kit-9379617.jpg?v=1786515612&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Black | 112000.2 - JDMuscleBoost Control Solenoid Coversgrm112000.2](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-black-1120002-1721823.jpg?v=1786515851&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Black | 112000.2 - JDMuscleBoost Control Solenoid Coversgrm112000.2](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-black-1120002-8208982.jpg?v=1786515851&width=220)
![Remark [15-21 WRX/STI] SPT Style Axle Back w/ Single Wall Polished Tips | RO-TSSP-S - JDMuscleAxle Back ExhaustsremRO-TSSP-S](http://jdmuscleusa.com/cdn/shop/products/remark-15-21-wrxsti-spt-style-axle-back-w-single-wall-polished-tips-ro-tssp-s-1657180.jpg?v=1789268292&width=220)
![Remark [15-21 WRX/STI] SPT Style Axle Back w/ Single Wall Polished Tips | RO-TSSP-S - JDMuscleAxle Back ExhaustsremRO-TSSP-S](http://jdmuscleusa.com/cdn/shop/files/remark-15-21-wrxsti-spt-style-axle-back-w-single-wall-polished-tips-ro-tssp-s-1702030.jpg?v=1789268292&width=220)
