2015-2021 Subaru STI Drivetrain Parts & Upgrades
Shop 2015-2021 subaru sti drivetrain parts and performance upgrades at JDMuscle. We carry the top brands with guaranteed fitment for your 2015-2021 Subaru STI.
2015-2021 Subaru STI Drivetrain
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![Perrin Performance [06 - 14 Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Red - JDMuscleClutch Alignment ToolsperPSP-BRK-300RD](//jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-red-2680576.jpg?v=1770322459&width=220)
![Perrin Performance [06 - 14 Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Red - JDMuscleClutch Alignment ToolsperPSP-BRK-300RD](//jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-red-2235623.jpg?v=1770322459&width=220)
Up to $7.05 off
In StockPerrin Clutch Delay Valve Delete - Red
Fits: 05-21 STI, 06-26 WRX, 05-09 Legacy/Outback
Regular price $39.95Sale price $39.95 Regular priceUnit price per$47.00 -
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Driveshaft Lockdown - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-201](//jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-25-wrx-15-21-sti-driveshaft-lockdown-5301246.jpg?v=1770325036&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Driveshaft Lockdown - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-201](//jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-25-wrx-15-21-sti-driveshaft-lockdown-4208341.jpg?v=1770325037&width=220)
Up to $22.80 off
In StockPerrin Driveshaft Lockdown
Fits: 08-14 Impreza, 15-25 WRX, 15-21 STI
Regular price $129.20Sale price $129.20 Regular priceUnit price per$152.00 -
Up to $7.05 off
In StockMishimoto Shift Knob - Universal
Only 19 leftRegular price From $50.95Sale price From $50.95 Regular priceUnit price per$56.00 -
![Kartboy [04-21 STI] Short Shifter and Bushing Combo | KB-001-6COMBO](//jdmuscleusa.com/cdn/shop/products/kartboy-short-shifter-and-bushing-combo-subaru-sti-2004-2020-kb-001-6combo-short-throw-shifters-kartboy-kbykb-001-6combo.jpg?v=1614540393&width=220)
In StockKartboy Short Shifter and Bushing Combo
Fits: 04-21 STI
Regular price $274.00Sale price $274.00 Regular priceUnit price per$274.00 -
In StockOVERTAKE Clutch Delay Valve Delete
Fits: 06-26 WRX, 06-21 STI
Regular price $39.00Sale price $39.00 Regular priceUnit price per$39.00 -
![Perrin Performance [06 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Black - JDMuscleClutch Replacement PartsperPSP-BRK-300BK](//jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-subaru-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-black-4860859.jpg?v=1770322222&width=220)
![Perrin Performance [06 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Black - JDMuscleClutch Replacement PartsperPSP-BRK-300BK](//jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-subaru-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-black-1993965.jpg?v=1770322222&width=220)
Up to $7.05 off
In StockPerrin Clutch Delay Valve Delete - Black
Fits: 05-21 STI, 06-25 WRX, 05-09 Legacy/Outback
Regular price $39.95Sale price $39.95 Regular priceUnit price per$47.00 -
![Perrin Performance Driveshaft Carrier Bushings [Universal] - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-210](//jdmuscleusa.com/cdn/shop/files/perrin-performance-driveshaft-carrier-bushings-universal-9629289.jpg?v=1770325037&width=220)
![Perrin Performance Driveshaft Carrier Bushings [Universal] - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-210](//jdmuscleusa.com/cdn/shop/files/perrin-performance-driveshaft-carrier-bushings-universal-7034099.jpg?v=1770325038&width=220)
Up to $7.05 off
In StockPerrin Driveshaft Carrier Bushings
Fits: Universal
Regular price $39.95Sale price $39.95 Regular priceUnit price per$47.00 -
![Whiteline [08-25 WRX, 08-21 STI, 05-13 LGT, 09-13 FXT, 12-16 Impreza, 13-17 Crosstrek] Gearbox Positive Shift Kit | KDT901](//jdmuscleusa.com/cdn/shop/products/whiteline-positive-shift-kit-2008-2019-wrx-2004-2019-sti-2009-2013-forester-xt-2005-2012-legacy-gt-kdt901-shifter-bushings-whiteline-wlkdt901.jpg?v=1614516106&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 05-13 LGT, 09-13 FXT, 12-16 Impreza, 13-17 Crosstrek] Gearbox Positive Shift Kit | KDT901](//jdmuscleusa.com/cdn/shop/files/whiteline-gearbox-positive-shift-kit-2008-2021-wrx-2008-2021-sti-2005-2013-lgt-2009-2013-fxt-kdt901-194581_627x416_14516155-f831-4934-bb72-c4a1c53a5ad4.jpg?v=1686348325&width=220)
Up to $7.99 off
In StockWhiteline Gearbox Positive Shift Kit
Fits: 08-26 WRX, 08-21 STI, 05-13 LGT, 09-13 FXT, 12-16 Impreza, 13-17 Crosstrek
Regular price $71.89Sale price $71.89 Regular priceUnit price per$79.88 -
![Cusco [15-25 WRX, 08-21 STI, 10-14 LegacY] Reinforced Differential Carrier | 6A1-489-A](//jdmuscleusa.com/cdn/shop/products/cusco-reinforced-differential-carrier-subaru-wrx-2015-2019-sti-2008-transmission-mounts-cusco-cus6a1-489-a.jpg?v=1614512127&width=220)
Up to $18.50 off
In StockCusco Reinforced Differential Carrier
Fits: 15-26 WRX, 08-21 STI, 10-14 Legacy
Only 19 leftRegular price $166.50Sale price $166.50 Regular priceUnit price per$185.00 -
In StockGrimmspeed 02-25 WRX/STI / LGT/ FXT Pitch Stop Mount Black | 122005
Only 1 leftRegular price $148.00Sale price $148.00 Regular priceUnit price per$148.00 -
![COBB [02 - 26 WRX, 04 - 21 STI] Pitch Stop Mount Black | 862001 - JDMusclePitch Stop Mountscobb862001](//jdmuscleusa.com/cdn/shop/products/cobb-02-26-wrx-04-21-sti-pitch-stop-mount-black-862001-4458279.jpg?v=1770336429&width=220)
![COBB [02 - 26 WRX, 04 - 21 STI] Pitch Stop Mount Black | 862001 - JDMusclePitch Stop Mountscobb862001](//jdmuscleusa.com/cdn/shop/products/cobb-02-26-wrx-04-21-sti-pitch-stop-mount-black-862001-5458963.jpg?v=1770336429&width=220)
In StockCobb Tuning Pitch Stop Mount - Black
Fits: 02-25* WRX, 04-21 STI, 04-18 Forester XT, 05-25 Legacy GT/XT, 05-25 Outback XT/Wilderness
Regular price $125.00Sale price $125.00 Regular priceUnit price per$125.00 -
![Whiteline [08-25 WRX, 08-21 STI, 10-12 LGT, 09-18 FXT, 15-19 Outback, 12-16 Impreza] Rear Differential Positive Power Kit Inserts | KDT903](//jdmuscleusa.com/cdn/shop/products/whiteline-rear-differential-mount-inserts-wrx-sti-2008-2019-forester-xt-2009-2017-kdt903-differential-braces-whiteline-wlkdt903.jpg?v=1614516138&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 10-12 LGT, 09-18 FXT, 15-19 Outback, 12-16 Impreza] Rear Differential Positive Power Kit Inserts | KDT903](//jdmuscleusa.com/cdn/shop/files/whiteline-rear-differential-positive-power-kit-inserts-2008-2021-wrx-2008-2021-sti-2010-2012-lgt-2009-2016-fxt-kdt903-666658_268x178_c77923e7-aaa1-486e-abd7-d7525d37000a.jpg?v=1703109574&width=220)
Up to $8.09 off
In StockWhiteline Rear Differential Positive Power Kit Inserts
Fits: 08-25 WRX, 08-21 STI, 10-12 LGT, 09-18 FXT, 15-19 Outback, 12-16 Impreza
Regular price $72.79Sale price $72.79 Regular priceUnit price per$80.88 -
Up to $195 off
In StockACT Heavy Duty Performance Street Disc Clutch Kit
Fits: 04-21 STI, 07-09 LGT Spec. B
Regular price $833.00Sale price $833.00 Regular priceUnit price per$1,028.00 -
![OVERTAKE Pitch Stop Mount Street Version [02 - 26 WRX / STI / LGT / FXT] - JDMusclePitch Stop MountsA10194STR](//jdmuscleusa.com/cdn/shop/files/overtake-pitch-stop-mount-street-version-02-26-wrx-sti-lgt-fxt-6848622.jpg?v=1770312919&width=220)
![OVERTAKE Pitch Stop Mount Street Version [02 - 26 WRX / STI / LGT / FXT] - JDMusclePitch Stop MountsA10194STR](//jdmuscleusa.com/cdn/shop/files/overtake-pitch-stop-mount-street-version-02-26-wrx-sti-lgt-fxt-6210858.jpg?v=1770312920&width=220)
In StockOVERTAKE Pitch Stop Mount Street Version
Fits: 02-26 WRX / STI / LGT / FXT
Regular price $99.00Sale price $99.00 Regular priceUnit price per$99.00 -
![Grimm Speed [02-25 WRX/STI] Race Version Pitch Stop Mount-Red | 122009 - JDMusclePitch Stop Mountsgrm122009](//jdmuscleusa.com/cdn/shop/products/grimm-speed-02-25-wrxsti-race-version-pitch-stop-mount-red-122009-2517511.jpg?v=1786515806&width=220)
![Grimm Speed [02-25 WRX/STI] Race Version Pitch Stop Mount-Red | 122009 - JDMusclePitch Stop Mountsgrm122009](//jdmuscleusa.com/cdn/shop/products/grimm-speed-02-25-wrxsti-race-version-pitch-stop-mount-red-122009-5512183.jpg?v=1786515807&width=220)
In StockGrimm Speed Race Version Pitch Stop Mount-Red | 122009
Fits: 02-25 WRX/STI
Only 1 leftRegular price $148.00Sale price $148.00 Regular priceUnit price per$148.00 -
![OVERTAKE [06 - 26 WRX, 06 - 21 STI] Clutch Delay Valve Delete - JDMuscleClutch Replacement PartsovtovtA10707](//jdmuscleusa.com/cdn/shop/files/overtake-06-26-wrx-06-21-sti-clutch-delay-valve-delete-2987946.webp?v=1770312289&width=220)
![OVERTAKE [06 - 26 WRX, 06 - 21 STI] Clutch Delay Valve Delete - JDMuscleClutch Replacement PartsovtovtA10707](//jdmuscleusa.com/cdn/shop/files/overtake-06-26-wrx-06-21-sti-clutch-delay-valve-delete-9593653.webp?v=1770312289&width=220)
Up to $8 offOVERTAKE Clutch Delay Valve Delete
Fits: 06-26 WRX, 06-21 STI
Regular price $39.00Sale price $39.00 Regular priceUnit price per$47.00
![Perrin Performance [06 - 14 Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Red - JDMuscleClutch Alignment ToolsperPSP-BRK-300RD](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-red-2680576.jpg?v=1770322459&width=220)
![Perrin Performance [06 - 14 Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Red - JDMuscleClutch Alignment ToolsperPSP-BRK-300RD](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-red-2235623.jpg?v=1770322459&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Driveshaft Lockdown - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-201](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-25-wrx-15-21-sti-driveshaft-lockdown-5301246.jpg?v=1770325036&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Driveshaft Lockdown - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-201](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-25-wrx-15-21-sti-driveshaft-lockdown-4208341.jpg?v=1770325037&width=220)
![Kartboy [04-21 STI] Short Shifter and Bushing Combo | KB-001-6COMBO](http://jdmuscleusa.com/cdn/shop/products/kartboy-short-shifter-and-bushing-combo-subaru-sti-2004-2020-kb-001-6combo-short-throw-shifters-kartboy-kbykb-001-6combo.jpg?v=1614540393&width=220)
![Perrin Performance [06 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Black - JDMuscleClutch Replacement PartsperPSP-BRK-300BK](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-subaru-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-black-4860859.jpg?v=1770322222&width=220)
![Perrin Performance [06 - 14 Subaru Impreza, 15 - 25 WRX, 15 - 21 STI] Clutch Delay Valve Delete Kit - Black - JDMuscleClutch Replacement PartsperPSP-BRK-300BK](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-06-14-subaru-impreza-15-25-wrx-15-21-sti-clutch-delay-valve-delete-kit-black-1993965.jpg?v=1770322222&width=220)
![Perrin Performance Driveshaft Carrier Bushings [Universal] - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-210](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-driveshaft-carrier-bushings-universal-9629289.jpg?v=1770325037&width=220)
![Perrin Performance Driveshaft Carrier Bushings [Universal] - JDMuscleDrive Shafts and DrivelinesperPSP-DRV-210](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-driveshaft-carrier-bushings-universal-7034099.jpg?v=1770325038&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 05-13 LGT, 09-13 FXT, 12-16 Impreza, 13-17 Crosstrek] Gearbox Positive Shift Kit | KDT901](http://jdmuscleusa.com/cdn/shop/products/whiteline-positive-shift-kit-2008-2019-wrx-2004-2019-sti-2009-2013-forester-xt-2005-2012-legacy-gt-kdt901-shifter-bushings-whiteline-wlkdt901.jpg?v=1614516106&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 05-13 LGT, 09-13 FXT, 12-16 Impreza, 13-17 Crosstrek] Gearbox Positive Shift Kit | KDT901](http://jdmuscleusa.com/cdn/shop/files/whiteline-gearbox-positive-shift-kit-2008-2021-wrx-2008-2021-sti-2005-2013-lgt-2009-2013-fxt-kdt901-194581_627x416_14516155-f831-4934-bb72-c4a1c53a5ad4.jpg?v=1686348325&width=220)
![Cusco [15-25 WRX, 08-21 STI, 10-14 LegacY] Reinforced Differential Carrier | 6A1-489-A](http://jdmuscleusa.com/cdn/shop/products/cusco-reinforced-differential-carrier-subaru-wrx-2015-2019-sti-2008-transmission-mounts-cusco-cus6a1-489-a.jpg?v=1614512127&width=220)
![COBB [02 - 26 WRX, 04 - 21 STI] Pitch Stop Mount Black | 862001 - JDMusclePitch Stop Mountscobb862001](http://jdmuscleusa.com/cdn/shop/products/cobb-02-26-wrx-04-21-sti-pitch-stop-mount-black-862001-4458279.jpg?v=1770336429&width=220)
![COBB [02 - 26 WRX, 04 - 21 STI] Pitch Stop Mount Black | 862001 - JDMusclePitch Stop Mountscobb862001](http://jdmuscleusa.com/cdn/shop/products/cobb-02-26-wrx-04-21-sti-pitch-stop-mount-black-862001-5458963.jpg?v=1770336429&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 10-12 LGT, 09-18 FXT, 15-19 Outback, 12-16 Impreza] Rear Differential Positive Power Kit Inserts | KDT903](http://jdmuscleusa.com/cdn/shop/products/whiteline-rear-differential-mount-inserts-wrx-sti-2008-2019-forester-xt-2009-2017-kdt903-differential-braces-whiteline-wlkdt903.jpg?v=1614516138&width=220)
![Whiteline [08-25 WRX, 08-21 STI, 10-12 LGT, 09-18 FXT, 15-19 Outback, 12-16 Impreza] Rear Differential Positive Power Kit Inserts | KDT903](http://jdmuscleusa.com/cdn/shop/files/whiteline-rear-differential-positive-power-kit-inserts-2008-2021-wrx-2008-2021-sti-2010-2012-lgt-2009-2016-fxt-kdt903-666658_268x178_c77923e7-aaa1-486e-abd7-d7525d37000a.jpg?v=1703109574&width=220)
![OVERTAKE Pitch Stop Mount Street Version [02 - 26 WRX / STI / LGT / FXT] - JDMusclePitch Stop MountsA10194STR](http://jdmuscleusa.com/cdn/shop/files/overtake-pitch-stop-mount-street-version-02-26-wrx-sti-lgt-fxt-6848622.jpg?v=1770312919&width=220)
![OVERTAKE Pitch Stop Mount Street Version [02 - 26 WRX / STI / LGT / FXT] - JDMusclePitch Stop MountsA10194STR](http://jdmuscleusa.com/cdn/shop/files/overtake-pitch-stop-mount-street-version-02-26-wrx-sti-lgt-fxt-6210858.jpg?v=1770312920&width=220)
![Grimm Speed [02-25 WRX/STI] Race Version Pitch Stop Mount-Red | 122009 - JDMusclePitch Stop Mountsgrm122009](http://jdmuscleusa.com/cdn/shop/products/grimm-speed-02-25-wrxsti-race-version-pitch-stop-mount-red-122009-2517511.jpg?v=1786515806&width=220)
![Grimm Speed [02-25 WRX/STI] Race Version Pitch Stop Mount-Red | 122009 - JDMusclePitch Stop Mountsgrm122009](http://jdmuscleusa.com/cdn/shop/products/grimm-speed-02-25-wrxsti-race-version-pitch-stop-mount-red-122009-5512183.jpg?v=1786515807&width=220)
![OVERTAKE [06 - 26 WRX, 06 - 21 STI] Clutch Delay Valve Delete - JDMuscleClutch Replacement PartsovtovtA10707](http://jdmuscleusa.com/cdn/shop/files/overtake-06-26-wrx-06-21-sti-clutch-delay-valve-delete-2987946.webp?v=1770312289&width=220)
![OVERTAKE [06 - 26 WRX, 06 - 21 STI] Clutch Delay Valve Delete - JDMuscleClutch Replacement PartsovtovtA10707](http://jdmuscleusa.com/cdn/shop/files/overtake-06-26-wrx-06-21-sti-clutch-delay-valve-delete-9593653.webp?v=1770312289&width=220)