Skip to content

Home
Shop
Contact Us
FAQs

Country/region

Country/region

Facebook
Instagram
TikTok
YouTube

Home
Shop
Contact Us
FAQs

Search

Item added to your cart

View cart

Collection: 2015-2021 Subaru STI parts

Sort by:

1139 products

Filter:

Product type (0)

Product type

Air Boxes (1 product)
Air Intake + Accessories (13 products)
Alternator Mount Kit (2 products)
Antennas + Accessories (1 product)
Axle Back (2 products)
Battery Tiedowns (5 products)
Belts - Timing, Accessory (1 product)
Big Brake Kits (1 product)
Boost Controllers + Accessories (3 products)
BOV and BPV (16 products)
Brackets (3 products)
Brake Calipers + Rebuild (8 products)
Brake Hardware (3 products)
Brake Line Kits (5 products)
Brake Pads (44 products)
Brake Rotors (57 products)
Bushing Kits (23 products)
Cat Back Exhaust (21 products)
Clutch Discs (4 products)
Clutch Kits - Multi (6 products)
Clutch Kits - Single (14 products)
Coilovers + Accessories (6 products)
Control Arms (4 products)
Cylinder Head + Sets (18 products)
Cylinder Head Gaskets (2 products)
Cylinder Head Studs + Bolts (2 products)
Diff Mounts + Braces + Bushings (4 products)
Dipsticks (5 products)
ECU Tunes (4 products)
Engine Covers (4 products)
Engine Gaskets + Sets (1 product)
Engine Long Block (10 products)
Engine Mounts (26 products)
Engine Oil Change Kit (2 products)
Engine Short Block (7 products)
Exhaust Adapters (5 products)
Exhaust Gaskets (4 products)
Exhaust Hangers (2 products)
Exhaust Manifolds + Accessories (5 products)
Exterior Trim (4 products)
Fans & Shrouds (2 products)
Flanges (2 products)
Flywheels (3 products)
Fog Lights (2 products)
Fuel Injectors + Accessories (5 products)
Fuel Lines (61 products)
Fuel Pressure Regulators + Accessories (1 product)
Fuel Pumps + Hangers (5 products)
Fuel Rails (8 products)
Halos (2 products)
Hardware (5 products)
Hoses (4 products)
Intercoolers + Accessories (11 products)
LED (3 products)
License Plate Relocation (4 products)
Lowering Springs (3 products)
Manual Transmission Mount (6 products)
Manual Transmission Synchro Assembly (2 products)
Mud Flaps (9 products)
Multi-Purpose Light Bulb (2 products)
Oil Caps (5 products)
Oil Coolers (4 products)
Oil Filters (3 products)
Oil Pan + Baffles + Gaskets (6 products)
Oil Separators (5 products)
Oil Strainers + Gaskets (1 product)
Power Packages (10 products)
Pressure Plates (2 products)
Pulleys - Crank, Underdrive (5 products)
Radiator Caps (4 products)
Radiator Hoses (2 products)
Radiator Shrouds (5 products)
Radiator Stays (2 products)
Radiators (3 products)
Seat Brackets & Frames (2 products)
Shifter Bushings (11 products)
Shifters (3 products)
Shock Mounts & Camber Plates (3 products)
Shocks and Struts (6 products)
Spark Plugs (2 products)
Steering Dampers (2 products)
Strut Bars (5 products)
Suspension Arms & Components (5 products)
Suspension Controllers (2 products)
Sway Bar Bushings (2 products)
Sway Bar Endlinks (8 products)
Sway Bars (7 products)
Timing Belts + Components (7 products)
Tow Hooks (4 products)
Transmission Mounts (5 products)
Turbine Housings (4 products)
Turbo Heat Management (1 product)
Turbo Inlets (2 products)
Turbo Kits (2 products)
Turbo Oil Lines + Accessories (1 product)
Turbochargers (8 products)
Wastegate + Accessories (4 products)
Wheel Spacers & Adapters (5 products)
Wheels (289 products)
Wheels - Cast (177 products)

Air Boxes (1 product)
Air Intake + Accessories (13 products)
Alternator Mount Kit (2 products)
Antennas + Accessories (1 product)
Axle Back (2 products)
Battery Tiedowns (5 products)
Belts - Timing, Accessory (1 product)
Big Brake Kits (1 product)
Boost Controllers + Accessories (3 products)
BOV and BPV (16 products)
Brackets (3 products)
Brake Calipers + Rebuild (8 products)
Brake Hardware (3 products)
Brake Line Kits (5 products)
Brake Pads (44 products)
Brake Rotors (57 products)
Bushing Kits (23 products)
Cat Back Exhaust (21 products)
Clutch Discs (4 products)
Clutch Kits - Multi (6 products)
Clutch Kits - Single (14 products)
Coilovers + Accessories (6 products)
Control Arms (4 products)
Cylinder Head + Sets (18 products)
Cylinder Head Gaskets (2 products)
Cylinder Head Studs + Bolts (2 products)
Diff Mounts + Braces + Bushings (4 products)
Dipsticks (5 products)
ECU Tunes (4 products)
Engine Covers (4 products)
Engine Gaskets + Sets (1 product)
Engine Long Block (10 products)
Engine Mounts (26 products)
Engine Oil Change Kit (2 products)
Engine Short Block (7 products)
Exhaust Adapters (5 products)
Exhaust Gaskets (4 products)
Exhaust Hangers (2 products)
Exhaust Manifolds + Accessories (5 products)
Exterior Trim (4 products)
Fans & Shrouds (2 products)
Flanges (2 products)
Flywheels (3 products)
Fog Lights (2 products)
Fuel Injectors + Accessories (5 products)
Fuel Lines (61 products)
Fuel Pressure Regulators + Accessories (1 product)
Fuel Pumps + Hangers (5 products)
Fuel Rails (8 products)
Halos (2 products)
Hardware (5 products)
Hoses (4 products)
Intercoolers + Accessories (11 products)
LED (3 products)
License Plate Relocation (4 products)
Lowering Springs (3 products)
Manual Transmission Mount (6 products)
Manual Transmission Synchro Assembly (2 products)
Mud Flaps (9 products)
Multi-Purpose Light Bulb (2 products)
Oil Caps (5 products)
Oil Coolers (4 products)
Oil Filters (3 products)
Oil Pan + Baffles + Gaskets (6 products)
Oil Separators (5 products)
Oil Strainers + Gaskets (1 product)
Power Packages (10 products)
Pressure Plates (2 products)
Pulleys - Crank, Underdrive (5 products)
Radiator Caps (4 products)
Radiator Hoses (2 products)
Radiator Shrouds (5 products)
Radiator Stays (2 products)
Radiators (3 products)
Seat Brackets & Frames (2 products)
Shifter Bushings (11 products)
Shifters (3 products)
Shock Mounts & Camber Plates (3 products)
Shocks and Struts (6 products)
Spark Plugs (2 products)
Steering Dampers (2 products)
Strut Bars (5 products)
Suspension Arms & Components (5 products)
Suspension Controllers (2 products)
Sway Bar Bushings (2 products)
Sway Bar Endlinks (8 products)
Sway Bars (7 products)
Timing Belts + Components (7 products)
Tow Hooks (4 products)
Transmission Mounts (5 products)
Turbine Housings (4 products)
Turbo Heat Management (1 product)
Turbo Inlets (2 products)
Turbo Kits (2 products)
Turbo Oil Lines + Accessories (1 product)
Turbochargers (8 products)
Wastegate + Accessories (4 products)
Wheel Spacers & Adapters (5 products)
Wheels (289 products)
Wheels - Cast (177 products)

Brand (0)

Brand

Color (0)

Color

Amber yellow (2 products)
Black (75 products)
Blue (33 products)
Bronze (57 products)
Cool White (1 product)
Gold (6 products)
Green (3 products)
Grey (1 product)
Gunmetal (31 products)
Pure white (2 products)
Red (7 products)
Silver (41 products)
White (56 products)

Amber yellow (2 products)
Black (75 products)
Blue (33 products)
Bronze (57 products)
Cool White (1 product)
Gold (6 products)
Green (3 products)
Grey (1 product)
Gunmetal (31 products)
Pure white (2 products)
Red (7 products)
Silver (41 products)
White (56 products)

Price

The highest price is $18,199.99

$

From

To

Availability (0)

Availability

In stock (1027 products)
Out of stock (112 products)

In stock (1027 products)
Out of stock (112 products)

Sort by:

Filter and sort Filter

Filter and sort

Filter

1139 products

Product type

Air Boxes (1 products)
Air Intake + Accessories (13 products)
Alternator Mount Kit (2 products)
Antennas + Accessories (1 products)
Axle Back (2 products)
Battery Tiedowns (5 products)
Belts - Timing, Accessory (1 products)
Big Brake Kits (1 products)
Boost Controllers + Accessories (3 products)
BOV and BPV (16 products)
Brackets (3 products)
Brake Calipers + Rebuild (8 products)
Brake Hardware (3 products)
Brake Line Kits (5 products)
Brake Pads (44 products)
Brake Rotors (57 products)
Bushing Kits (23 products)
Cat Back Exhaust (21 products)
Clutch Discs (4 products)
Clutch Kits - Multi (6 products)
Clutch Kits - Single (14 products)
Coilovers + Accessories (6 products)
Control Arms (4 products)
Cylinder Head + Sets (18 products)
Cylinder Head Gaskets (2 products)
Cylinder Head Studs + Bolts (2 products)
Diff Mounts + Braces + Bushings (4 products)
Dipsticks (5 products)
ECU Tunes (4 products)
Engine Covers (4 products)
Engine Gaskets + Sets (1 products)
Engine Long Block (10 products)
Engine Mounts (26 products)
Engine Oil Change Kit (2 products)
Engine Short Block (7 products)
Exhaust Adapters (5 products)
Exhaust Gaskets (4 products)
Exhaust Hangers (2 products)
Exhaust Manifolds + Accessories (5 products)
Exterior Trim (4 products)
Fans & Shrouds (2 products)
Flanges (2 products)
Flywheels (3 products)
Fog Lights (2 products)
Fuel Injectors + Accessories (5 products)
Fuel Lines (61 products)
Fuel Pressure Regulators + Accessories (1 products)
Fuel Pumps + Hangers (5 products)
Fuel Rails (8 products)
Halos (2 products)
Hardware (5 products)
Hoses (4 products)
Intercoolers + Accessories (11 products)
LED (3 products)
License Plate Relocation (4 products)
Lowering Springs (3 products)
Manual Transmission Mount (6 products)
Manual Transmission Synchro Assembly (2 products)
Mud Flaps (9 products)
Multi-Purpose Light Bulb (2 products)
Oil Caps (5 products)
Oil Coolers (4 products)
Oil Filters (3 products)
Oil Pan + Baffles + Gaskets (6 products)
Oil Separators (5 products)
Oil Strainers + Gaskets (1 products)
Power Packages (10 products)
Pressure Plates (2 products)
Pulleys - Crank, Underdrive (5 products)
Radiator Caps (4 products)
Radiator Hoses (2 products)
Radiator Shrouds (5 products)
Radiator Stays (2 products)
Radiators (3 products)
Seat Brackets & Frames (2 products)
Shifter Bushings (11 products)
Shifters (3 products)
Shock Mounts & Camber Plates (3 products)
Shocks and Struts (6 products)
Spark Plugs (2 products)
Steering Dampers (2 products)
Strut Bars (5 products)
Suspension Arms & Components (5 products)
Suspension Controllers (2 products)
Sway Bar Bushings (2 products)
Sway Bar Endlinks (8 products)
Sway Bars (7 products)
Timing Belts + Components (7 products)
Tow Hooks (4 products)
Transmission Mounts (5 products)
Turbine Housings (4 products)
Turbo Heat Management (1 products)
Turbo Inlets (2 products)
Turbo Kits (2 products)
Turbo Oil Lines + Accessories (1 products)
Turbochargers (8 products)
Wastegate + Accessories (4 products)
Wheel Spacers & Adapters (5 products)
Wheels (289 products)
Wheels - Cast (177 products)

Clear

Brand

Clear

Color

Amber yellow (2 products)
Black (75 products)
Blue (33 products)
Bronze (57 products)
Cool White (1 products)
Gold (6 products)
Green (3 products)
Grey (1 products)
Gunmetal (31 products)
Pure white (2 products)
Red (7 products)
Silver (41 products)
White (56 products)

Clear

Price

The highest price is $18,199.99

$

From

$

To

Clear

Availability

In stock (1027 products)
Out of stock (112 products)

Clear

Sort by:

Remove all

1139 products

PosiQuiet Various Models Front Brake Pads for Brembo Calipers

PosiQuiet Various Models Front Brake Pads for Brembo Calipers

Regular price $71.00 USD

Regular price Sale price $71.00 USD
Unit price per
PosiQuiet 05-06 Mustang GT (Fr and Rear) / 04-09 STi/03-06 Evo Deluxe Plus Front Brake Pads

PosiQuiet 05-06 Mustang GT (Fr and Rear) / 04-09 STi/03-06 Evo Deluxe Plus Front Brake Pads

Regular price $55.89 USD

Regular price Sale price $55.89 USD
Unit price per
PosiQuiet ST22 Semi-Metallic Brake Pads

PosiQuiet ST22 Semi-Metallic Brake Pads

Regular price $43.54 USD

Regular price Sale price $43.54 USD
Unit price per
Sparco Base Subaru WRX/Sti 2015 Rt

Sparco Base Subaru WRX/Sti 2015 Rt

Regular price $199.00 USD

Regular price Sale price $199.00 USD
Unit price per
Sparco Base Subaru WRX/Sti 2015 Lft

Sparco Base Subaru WRX/Sti 2015 Lft

Regular price $199.00 USD

Regular price Sale price $199.00 USD
Unit price per
Radium Engineering Radiator Cap Type-A 1.5 Bar - Black

Sale

Radium Engineering Radiator Cap Type-A 1.5 Bar - Black

Regular price $28.45 USD

Regular price ~~$29.95 USD~~ Sale price $28.45 USD
Unit price per

Sale
Radium Engineering Radiator Cap, Typ-A 1.3Bar - Black

Sale

Radium Engineering Radiator Cap, Typ-A 1.3Bar - Black

Regular price $28.45 USD

Regular price ~~$29.95 USD~~ Sale price $28.45 USD
Unit price per

Sale
Perrin Steering Dampener Lockdown for Subarus

Sale

Perrin Steering Dampener Lockdown for Subarus

Regular price $83.25 USD

Regular price ~~$111.00 USD~~ Sale price $83.25 USD
Unit price per

Sale
Perrin Subaru 05-14 WRX/ 05-15 STI Steering Rack Bushing Kit

Sale

Perrin Subaru 05-14 WRX/ 05-15 STI Steering Rack Bushing Kit

Regular price $55.50 USD

Regular price ~~$74.00 USD~~ Sale price $55.50 USD
Unit price per

Sale
Perrin Control Arm Bushing Kit for Lower Inner Front Bushing 08-15 WRX/STI/BRZ

Sale

Perrin Control Arm Bushing Kit for Lower Inner Front Bushing 08-15 WRX/STI/BRZ

Regular price $52.50 USD

Regular price ~~$70.00 USD~~ Sale price $52.50 USD
Unit price per

Sale
Perrin 08-21 WRX / 08-21 STI 13-20 & 2022 BRZ / 2022 Toyota GR86 Urethane Rear Endlinks

Sale

Perrin 08-21 WRX / 08-21 STI 13-20 & 2022 BRZ / 2022 Toyota GR86 Urethane Rear Endlinks

Regular price $191.25 USD

Regular price ~~$255.00 USD~~ Sale price $191.25 USD
Unit price per

Sale
Perrin 2015+ Subaru WRX / STI Front Endlinks

Sale

Perrin 2015+ Subaru WRX / STI Front Endlinks

Regular price $110.25 USD

Regular price ~~$147.00 USD~~ Sale price $110.25 USD
Unit price per

Sale
Perrin 08-16 WRX/STi Front Red Strut Brace

Sale

Perrin 08-16 WRX/STi Front Red Strut Brace

Regular price $249.75 USD

Regular price ~~$333.00 USD~~ Sale price $249.75 USD
Unit price per

Sale
Perrin 08-16 WRX/STi Front Neon Yellow Strut Brace

Sale

Perrin 08-16 WRX/STi Front Neon Yellow Strut Brace

Regular price $249.75 USD

Regular price ~~$333.00 USD~~ Sale price $249.75 USD
Unit price per

Sale
Perrin 2008+ WRX/STI Front Strut Brace - Hyper Pink

Sale

Perrin 2008+ WRX/STI Front Strut Brace - Hyper Pink

Regular price $249.75 USD

Regular price ~~$333.00 USD~~ Sale price $249.75 USD
Unit price per

Sale
Perrin Performance 2015-2017 Subaru STI FMIC Red Boost Tubes w/ Black Silicone Couplers

Sale

Perrin Performance 2015-2017 Subaru STI FMIC Red Boost Tubes w/ Black Silicone Couplers

Regular price $1,058.25 USD

Regular price ~~$1,411.00 USD~~ Sale price $1,058.25 USD
Unit price per

Sale
Perrin Performance 2015-2017 Subaru STI Front Mount Intercooler (Silver Core and Beam)

Sale

Perrin Performance 2015-2017 Subaru STI Front Mount Intercooler (Silver Core and Beam)

Regular price $1,058.25 USD

Regular price ~~$1,411.00 USD~~ Sale price $1,058.25 USD
Unit price per

Sale
Perrin Performance 2015-2021 Subaru WRX & STI Front Mount Intercooler (Black Core and Beam)

Sale

Perrin Performance 2015-2021 Subaru WRX & STI Front Mount Intercooler (Black Core and Beam)

Regular price $1,058.25 USD

Regular price ~~$1,411.00 USD~~ Sale price $1,058.25 USD
Unit price per

Sale
Perrin 08+ STi FMIC Red Boost Tubes w/ Black Silicone

Sale

Perrin 08+ STi FMIC Red Boost Tubes w/ Black Silicone

Regular price $829.50 USD

Regular price ~~$1,106.00 USD~~ Sale price $829.50 USD
Unit price per

Sale
Perrin 08+ WRX/STi FMIC Silver Core and Beam

Sale

Perrin 08+ WRX/STi FMIC Silver Core and Beam

Regular price $903.75 USD

Regular price ~~$1,205.00 USD~~ Sale price $903.75 USD
Unit price per

Sale
Perrin 08+ WRX/STi FMIC Black Core and Beam

Sale

Perrin 08+ WRX/STi FMIC Black Core and Beam

Regular price $903.75 USD

Regular price ~~$1,205.00 USD~~ Sale price $903.75 USD
Unit price per

Sale
Perrin Subaru 08-15 WRX Top Mount Intercooler Silicone Coupler - Red

Sale

Perrin Subaru 08-15 WRX Top Mount Intercooler Silicone Coupler - Red

Regular price $69.00 USD

Regular price ~~$92.00 USD~~ Sale price $69.00 USD
Unit price per

Sale
Perrin 08-20 Subaru STI Top Mount Intercooler (TMIC) - Silver

Sale

Perrin 08-20 Subaru STI Top Mount Intercooler (TMIC) - Silver

Regular price $667.50 USD

Regular price ~~$890.00 USD~~ Sale price $667.50 USD
Unit price per

Sale
Perrin 02-07 Subaru WRX / 04-11 STi Black Turbo Inlet Hose

Sale

Perrin 02-07 Subaru WRX / 04-11 STi Black Turbo Inlet Hose

Regular price $249.75 USD

Regular price ~~$333.00 USD~~ Sale price $249.75 USD
Unit price per

Sale

1
2
3
4
5
6
…
48

Contact Us

sales@circuitdemon.com

585-420-6920

640 East Main Street

Palmyra, NY 14522

Open Monday through Friday 9am-5pm

Menu

The New Circuit Demon
Shop
Blog
Contact Us
FAQ's

Share your email to be the first to know about exclusive offers, behind the scenes footage, and new product alerts.

Email

Facebook
Instagram
YouTube
TikTok

Country/region

Country/region

© 2025, Circuit Demon Powered by Shopify

Refund policy
Privacy policy
Terms of service
Shipping policy
Contact information

Choosing a selection results in a full page refresh.
Opens in a new window.

Search