Skip to content
CHRISTMAS SAVINGS ARE LIVE!
CHRISTMAS SAVINGS ARE LIVE!

2015-2021 WRX STI Mods

Whiteline Rear Brace - Sway Bar Mount Support 2015-2021 WRX/STI

Original price $106.88
Original price $106.88 - Original price $106.88
Original price $106.88
Current price $80.16
$80.16 - $80.16
Current price $80.16

Whiteline's rear sway bar mount support brace increases the stiffness of the rear sway bar mount and reduce the likelihood of bending or cracking ...

View full details

Whiteline Pitch Stop Mount 2002+ WRX / 2004-2021 STI

Original price $145.88
Original price $145.88 - Original price $145.88
Original price $145.88
Current price $109.41
$109.41 - $109.41
Current price $109.41

Subaru designed the pitch stop mount to assist in controlling the engine and drivetrain forward and aft twisting motion. The pitch stop is inheren...

View full details

Whiteline Front Sway Bar Endlinks 2015-2021 WRX/STI

Original price $181.88
Original price $181.88 - Original price $181.88
Original price $181.88
Current price $136.41
$136.41 - $136.41
Current price $136.41

Not many enthusiasts are aware that OE and more importantly aftermarket sway bar effectiveness can be hindered by worn or inadequate mounts, drop ...

View full details

Whiteline Adjustable Rear Sway Bar Endlinks 2008+ WRX / 2008-2021 STI

Original price $181.88
Original price $181.88 - Original price $181.88
Original price $181.88
Current price $136.41
$136.41 - $136.41
Current price $136.41

Not many enthusiasts are aware that OE and more importantly aftermarket sway bar effectiveness can be hindered by worn or inadequate mounts, drop ...

View full details

Whiteline Front Brace Strut Tower 2015-2021 WRX/STI

Original price $228.88
Original price $228.88 - Original price $228.88
Original price $228.88
Current price $171.66
$171.66 - $171.66
Current price $171.66

You can never have too much chassis stiffness. Weight aside, the more the better. Chassis bracing maintains alignment angles and spring rates by gr...

View full details

WhiteLine Rear Sway Bar - 20mm Heavy Duty 2015-2021 WRX/STI

Original price $298.88
Original price $298.88 - Original price $298.88
Original price $298.88
Current price $224.16
$224.16 - $224.16
Current price $224.16

Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are sprea...

View full details

Whiteline Rear Sway Bar 22mm X Heavy Duty Blade Adjustable 2008-2021 WRX/STI

Original price $350.88
Original price $350.88 - Original price $350.88
Original price $350.88
Current price $263.16
$263.16 - $263.16
Current price $263.16

Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are sprea...

View full details

Whiteline 26mm Adjustable Front Sway Bar 2015-2021 STI

Original price $319.88
Original price $319.88 - Original price $319.88
Original price $319.88
Current price $239.91
$239.91 - $239.91
Current price $239.91

Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are sprea...

View full details

Whiteline Performance Lowering Spring Kit 2015-2021 STI

Original price $339.88
Original price $339.88 - Original price $339.88
Original price $339.88
Current price $254.91
$254.91 - $254.91
Current price $254.91

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 6.1kg/mm (329...

View full details

Whiteline Rear Essential Vehicle Kit 2015-2021 WRX/STI

Original price $372.88
Original price $372.88 - Original price $372.88
Original price $372.88
Current price $279.66
$279.66 - $279.66
Current price $279.66

Whiteline's "Vehicle Essential Kits" contain all the essential components to 'Activate More Grip'.

Whiteline 24mm Adjustable Rear Sway Bar 2008-2021 WRX/STI

Original price $390.88
Original price $390.88 - Original price $390.88
Original price $390.88
Current price $293.16
$293.16 - $293.16
Current price $293.16

Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are spread...

View full details

Whiteline Front and Rear Sway Bar Kit 2015-2021 STI

Original price $905.88
Original price $905.88 - Original price $905.88
Original price $905.88
Current price $679.41
$679.41 - $679.41
Current price $679.41

Engineered to 'Activate More Grip', BSK019 is a packaged solution designed to improve performance and enhance the driving experience of your vehicl...

View full details

Whiteline Grip Series 1 Kit for Subaru 2015-2021 WRX/STI

Original price $1,186.88
Original price $1,186.88 - Original price $1,186.88
Original price $1,186.88
Current price $890.16
$890.16 - $890.16
Current price $890.16

The ultimate entry level suspension upgrade! Performance, handling and comfort make up the Grip Series Stage 1 kit featuring Whiteline signature f...

View full details

Whiteline Rear Adjustable Toe Arms 2015-2021 WRX/STI

Original price $427.88
Original price $427.88 - Original price $427.88
Original price $427.88
Current price $320.91
$320.91 - $320.91
Current price $320.91

Especially on lowered vehicles where rear camber alignment is a must, achieving that desired camber setting is hindered by lack of factory toe adj...

View full details

Whiteline Front Roll Center / Bump Steer Correction Kit 2015-2021 WRX/STI

Original price $308.88
Original price $308.88 - Original price $308.88
Original price $308.88
Current price $231.66
$231.66 - $231.66
Current price $231.66

A must for lowered vehicles, Whiteline roll center and bump steer correction kits are designed to correct roll-centre geometry using specially eng...

View full details

Whiteline Adjustable Rear Lower Control Arms 2008+ WRX / 2008-2021 STI

Original price $357.88
Original price $357.88 - Original price $357.88
Original price $357.88
Current price $268.41
$268.41 - $268.41
Current price $268.41

Adjustable lower control arms feature a light weight (1.72kg/3.8lbs per complete arm) stamped steel design. Adjusts via cam bolt and eccentric bus...

View full details

Whiteline Adjustable Rear Lower Control Arm 2008+ WRX / 2008-2021 STI

Original price $438.88
Original price $438.88 - Original price $438.88
Original price $438.88
Current price $329.16
$329.16 - $329.16
Current price $329.16

Heavy duty control arms provides on car adjustability of camber alignment. This results in improved traction, increased cornering grip and better t...

View full details

Whiteline Anti Lift Race Kit 2015+ WRX/ 2011-2021 STI

Original price $371.88
Original price $371.88 - Original price $371.88
Original price $371.88
Current price $278.91
$278.91 - $278.91
Current price $278.91

Whiteline's 'MOTORSPORT ONLY' Anti Geometry Kit replaces the front control arm rear vertically mounted bushing and features lightweight aluminium h...

View full details

Whiteline Anti Lift Kit 2015+ WRX/ 2011-2021 STI

Original price $171.88
Original price $171.88 - Original price $171.88
Original price $171.88
Current price $128.91
$128.91 - $128.91
Current price $128.91

Whiteline's Anti Geometry Kit replaces the front control arm rear vertically mounted bushing and featuring low compliance synthetic elastomer with ...

View full details

Whiteline Adjustable Rear Sway Bar Endlinks 2008+ WRX / 2008-2021 STI

Original price $181.88
Original price $181.88 - Original price $181.88
Original price $181.88
Current price $136.41
$136.41 - $136.41
Current price $136.41

Not many enthusiasts are aware that OE and more importantly aftermarket sway bar effectiveness can be hindered by worn or inadequate mounts, drop l...

View full details

Whiteline Performance Lowering Spring Kit 2015-2021 WRX

Original price $339.88
Original price $339.88 - Original price $339.88
Original price $339.88
Current price $254.91
$254.91 - $254.91
Current price $254.91

Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 6.1kg/mm (341l...

View full details

Whiteline 26mm Adjustable Front Sway Bar 2015-2021 WRX

Original price $319.88
Original price $319.88 - Original price $319.88
Original price $319.88
Current price $239.91
$239.91 - $239.91
Current price $239.91

Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are spread...

View full details

Whiteline Front and Rear Sway Bar Kit 2015-2021 WRX

Original price $905.88
Original price $905.88 - Original price $905.88
Original price $905.88
Current price $679.41
$679.41 - $679.41
Current price $679.41

Engineered to 'Activate More Grip', BSK017 is a packaged solution designed to improve performance and enhance the driving experience of your vehic...

View full details

If you own a Subaru WRX STI, you know you have the perfect platform to craft a masterpiece on wheels. At WRXDaily, we understand that every enthusiast has a vision, and we’re here to offer the WRX STI mods you need to bring yours to life. With products tailored to elevate performance, enhance style, and perfect handling, our curated selection puts endless possibilities at your fingertips. 

No matter what you need, our Subaru WRX STI modifications deliver quality and reliability you can trust. From high-performance upgrades to must-have Subaru STI accessories, we have everything you need to create a car that’s as bold and unique as your passion for driving. Own a 2018 WRX? We offer a variety of 2018 WRX parts designed to fit your specific model. 

With WRXDaily, your Subaru becomes a true reflection of your style and ambition. Browse our selection of WRX STI mods today and start your next build!