2021 Subaru WRX STI Suspension Parts
Find Your Specific 2021 Subaru WRX STI Suspension Parts
Below you will find various in-demand Subaru Suspension Parts, components and accessories for your 2021 WRX STI. Advance Auto Parts has popular WRX STI parts like Coil and Leaf Springs, Trailing Arms, Air Suspension and Kits and more. You’ll also find aftermarket and OEM Suspension Parts for other WRX STI model years including
2015,
2016,
2017,
2018,
2019,
2020 and more. Select a category of 2021 Subaru WRX STI Suspension Parts below and start saving instantly.
Popular 2021 Subaru WRX STI Suspension Parts Categories
Essential Suspension Parts for 2021 Subaru WRX STIs
Whiteline – Grip Series Kit (Part No.GS1-SUB007)
from
$789.99
The ultimate entry level suspension upgrade! Performance, handling and comfort make up the Grip Series Stage 1 kit featuring Whiteline signature front and rear adjustable (where applicable) sway bars, drop links and performance lowering springs.
Product Features:
See More
Product Features:
- Bracing maintains alignment angles and spring rates by greatly reducing body or chassis flex.
- Whiteline sway bar mounts utilise the latest technology synthetic elastomer combined with effective designs such as the internal bore knurling and grease retention lips for optimum lubrication & performance.
- DIY Lateral locks prevent shifting or sideways movement of the sway bar under lateral (cornering) loads.
MOOG – Suspension Control Arm Bushing (Part No.K201882)
from
$43.49
Backed by superior materials and rigorous testing, MOOG control arm bushings deliver reliable performance you can count on. MOOG problem-solving innovations ensure fast, hassle-free installation.
Product Features:
See More
Product Features:
- HIGHLY PRECISE ENGINEERING — Optimized for quiet operation and resistance to wear, salt, road grime and oils
- PREMIUM MATERIALS — Made from high-quality elastomer compounds for durability and ride performance
- OE-STYLE DESIGN — Engineered to match or exceed OE requirements
- RIGOROUS TESTING — Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
Whiteline – Control Arm Upper Inner Bushing (Part No.W63225)
from
$137.99
Suffering uneven tyre wear, unbalanced braking or a less predictable rear end while cornering. It could be your control arm bushings have failed. Replace these worn parts with Whiteline synthetic elastomer bushings that offer long lasting durability for a safer more predictable vehicle.
Product Features:
See More
Product Features:
- Designed with the installer in mind by reducing the need of specialised skills, tools and equipment.
- Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
- Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
- Internal grease reservoirs provide continual self lubrication for optimum friction management.
Whiteline – Control Arm Upper Outer Bearing (Part No.W63412)
from
$116.99
A common serviceable item, worn joints exhibit excess movement and are commonly diagnosed simply from knocking and rattling noises coming from the upright or hub area. If worn and not replaced, these joints can have significant negative impact on wheel alignment and resulting uneven tyre wear or scrub. Whiteline’s replacement joints boast superior internal joint structure for improved performance and durability. The outer housing also features a chamfered leading edge for ease of installation.
Product Features:
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Product Features:
- Install guide included providing detailed instructions on how to install your new Whiteline purchase.
- Install guide included providing detailed instructions on how to install your new Whiteline purchase.
Dorman – Suspension Control Arm Bushing (Part No.533-844)
from
$14.49
This suspension control arm bushing is precision-engineered and rigorously tested to provide reliable replacement for the original equipment on specific vehicles.
Product Features:
See More
Product Features:
- Direct replacement – fits and performs like the original equipment bushing on specific vehicles
- Reliable fit – precision-engineered to match the design and dimensions of original components
- Durable construction – manufactured to strict standards using sturdy, safe materials
- Rigorously tested – thorough quality control measures ensure longevity
Whiteline – Control Arm Lower Arm Assembly (Camber/Toe Correction) Motorsport (Part No.KTA216A)
from
$242.99
Adjustable lower control arms feature a light weight (1.72kg/3.8lbs per complete arm) stamped steel design. Adjusts via cam bolt for on-car adjustment versatility.
Product Features:
See More
Product Features:
- Engineered to alter/ optimise camber alignment to compensate for body roll, body distortion and tyre roll when cornering.
- Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
- Install guide included providing detailed instructions on how to install your new Whiteline purchase.
MOOG – Suspension Control Arm (Part No.RK100136)
from
$204.99
MOOG premium control arms for foreign and domestic nameplates are engineered for structural strength and corrosion protection.
Product Features:
See More
Product Features:
- EASY TO INSTALL — Precision tolerances for easy installation and steering alignment giving you a perfect fit right out of the box
- HIGHLY PRECISE ENGINEERING — Optimized bushings for quiet operation and resistance to wear, salt, road grime and oils
- COMPREHENSIVE COVERAGE — Available for foreign and domestic nameplates
- Construction and design validated by MOOG engineers
- Broad coverage for foreign and domestic applications
- R-Series (RK) products are the right choice for value-driven repair
Whiteline – Trailing Arm Lower Front Bushing (Part No.W63414)
from
$77.99
Suffering uneven tyre wear, unbalanced braking or a less predictable rear end while cornering. It could be your trailing arm bushings have failed. Replace these worn parts with Whiteline bushings with core characteristics ensuring superior elasticity, memory and outright durability that offer a safer more predictable vehicle.
Product Features:
See More
Product Features:
- Internal grease reservoirs provide continual self lubrication for optimum friction management.
- Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
- Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
- Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
Whiteline – Trailing Arm Lower Rear Bushing (Part No.W63582)
from
$35.99
Suffering uneven tyre wear, unbalanced braking or a less predictable rear end while cornering. It could be your trailing arm bushings have failed. Replace these worn parts with Whiteline bushings with core characteristics ensuring superior elasticity, memory and outright durability that offer a safer more predictable vehicle.
Product Features:
See More
Product Features:
- Designed with the installer in mind by reducing the need of specialised skills, tools and equipment.
- Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
- Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
- Internal grease reservoirs provide continual self-lubrication for optimum friction management.
Whiteline – Essential Vehicle Kit (Part No.WEK090)
from
$261.99
Whiteline’s ‘Vehicle Essential Kits’ contain all the essential components to ‘Activate More Grip’.
Product Features:
See More
Product Features:
- Hand picked Whiteline bushings and/or alignment, geometry products best suiting your vehicle.
- Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
- Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
Royal Purple – Max Performance Synthetic Power Steering Fluid (Part No.01326)
from
$6.99
Max Performance Synthetic Power Steering Fluid
Valvoline – DEX/MERC Automatic Transmission Fluid, 1 Gallon (Part No.773636)
from
$35.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON®, DEXRON®-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Valvoline – ATF for Mercon®V Applications Conventional, 1 Quart (Part No.822345)
from
$12.99
Valvoline ATF for MERCON V Applications is a high-quality transmission fluid meeting and exceeding the requirements of the Ford Mercon V specification which covers most Ford passenger cars and light-duty trucks (except those specifying MERCON SP, MERCON LV, MERCON ULV or Type F fluids), including Lincoln and Mercury, as well as most pre-2006 GM vehicles and many imports. Recommended for use in the following applications: MERCON V, MERCON, DEXRON-III, DEXRON-II, Caterpillar TO-2, Allison C-4. Other applications include Power steering fluid where a DEXRON or MERCON fluid is recommended. Suitable to use in Nissan Matic D, Matic J and Matic K.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Whiteline – Coil Springs Lowered (Part No.WSK-SUB007)
from
$230.99
Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 6.1kg/mm (329lb/in) front rated springs that provide a 15mm drop while the 5.8kg/mm (325lb/in) rears deliver a desirable 15mm to the rear of the vehicle. By lowering the vehicles centre of gravity, the unique and progressive rate coil design not only improve performance but enhance overall appearance. Developed and manufactured in Europe from the highest quality materials, coating and to the finest tolerances guaranteeing exact fitment. Whiteline Springs are engineered for optimal balance with OEM and aftermarket shocks. For total grip activation match with Whiteline Sway Bar and Essentials kit for unrivalled handling and optimal vehicle performance.
Product Features:
See More
Product Features:
- Cold rolled in Europe from the highest quality material.
- Engineered for superior fit/performance with OEM shocks while produced to the finest tolerances ensuring exact fitment.
- Protective powder coating acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
Upgrade your 2021 Subaru WRX STI with Top-Quality Suspension Parts
When it comes to maintaining or upgrading your 2021 Subaru WRX STI, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Subaru or enhancing its overall performance, Suspension Parts are key to keeping your WRX STI functioning at its best. At Advance Auto Parts, we offer a wide selection of 10 Suspension Parts for the 2021 Subaru WRX STI, designed to meet your needs without breaking the bank.
From
Coil and Leaf Spring
replacements to
Trailing Arms
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Suspension Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Suspension Parts for your 2021 Subaru WRX STI at great prices.
Our Suspension Parts inventory for this model
ranges from just $6.99 to $789.99, with
an average price of $158.89.
Our 10 Suspension Parts in stock come from 5 trusted brands, so you’re sure to find the right part for your 2021 Subaru WRX STI without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2021 Subaru WRX STI, we stock popular OEM and aftermarket Suspension Parts from top names
like Valvoline, and more.
Valvoline Suspension Parts
start at just $12.99 and boast an impressive 4.8 stars average rating from customers.
With 274 customer reviews and counting, our 2021 Subaru WRX STI Suspension Parts have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Suspension Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2021 Subaru WRX STI is always ready to roll. We’re committed to providing you with everything you need to keep your WRX STI in top shape, all in one place.
Start shopping confidently below for your 2021 Subaru WRX STI!
Best-Selling Coil and Leaf Springs for 2021 Subaru WRX STIs
Enhance the driving experience in your Subaru with 2 quality Coil and Leaf Spring components, starting at $230.99.
Whiteline – Grip Series Kit (Part No.GS1-SUB007)
from
$789.99
The ultimate entry level suspension upgrade! Performance, handling and comfort make up the Grip Series Stage 1 kit featuring Whiteline signature front and rear adjustable (where applicable) sway bars, drop links and performance lowering springs.
Product Features:
See More
Product Features:
- Bracing maintains alignment angles and spring rates by greatly reducing body or chassis flex.
- Whiteline sway bar mounts utilise the latest technology synthetic elastomer combined with effective designs such as the internal bore knurling and grease retention lips for optimum lubrication & performance.
- DIY Lateral locks prevent shifting or sideways movement of the sway bar under lateral (cornering) loads.
Whiteline – Coil Springs Lowered (Part No.WSK-SUB007)
from
$230.99
Whiteline Springs deliver improved vehicle performance whilst maintaining safety and ride quality characteristics. This kit contains 6.1kg/mm (329lb/in) front rated springs that provide a 15mm drop while the 5.8kg/mm (325lb/in) rears deliver a desirable 15mm to the rear of the vehicle. By lowering the vehicles centre of gravity, the unique and progressive rate coil design not only improve performance but enhance overall appearance. Developed and manufactured in Europe from the highest quality materials, coating and to the finest tolerances guaranteeing exact fitment. Whiteline Springs are engineered for optimal balance with OEM and aftermarket shocks. For total grip activation match with Whiteline Sway Bar and Essentials kit for unrivalled handling and optimal vehicle performance.
Product Features:
See More
Product Features:
- Cold rolled in Europe from the highest quality material.
- Engineered for superior fit/performance with OEM shocks while produced to the finest tolerances ensuring exact fitment.
- Protective powder coating acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
Most Popular 2021 Subaru WRX STI Trailing Arms
Customize your Subaru with 1 Trailing Arms products
like Trailing Arm Bushings, all
priced under $16.99.
MOOG – Suspension Trailing Arm Bushing (Part No.K202173)
from
$16.99
Product Features:
See More
- HIGHLY PRECISE ENGINEERING- Optimized for quiet operation and resistance to wear, salt, road grime and oils
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
- COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
Top Picks for 2021 Subaru WRX STI Air Suspension and Kits
Upgrade Subaru WRX STIs with top-quality Air Suspension and Kits parts, including 4 OEM and aftermarket selections for your 2021 model.
Valvoline – ATF for Mercon®V Applications Conventional, 1 Quart (Part No.822345)
from
$12.99
Valvoline ATF for MERCON V Applications is a high-quality transmission fluid meeting and exceeding the requirements of the Ford Mercon V specification which covers most Ford passenger cars and light-duty trucks (except those specifying MERCON SP, MERCON LV, MERCON ULV or Type F fluids), including Lincoln and Mercury, as well as most pre-2006 GM vehicles and many imports. Recommended for use in the following applications: MERCON V, MERCON, DEXRON-III, DEXRON-II, Caterpillar TO-2, Allison C-4. Other applications include Power steering fluid where a DEXRON or MERCON fluid is recommended. Suitable to use in Nissan Matic D, Matic J and Matic K.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Valvoline – DEX/MERC Automatic Transmission Fluid, 1 Gallon (Part No.773636)
from
$35.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON®, DEXRON®-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Whiteline – Essential Vehicle Kit (Part No.WEK090)
from
$261.99
Whiteline’s ‘Vehicle Essential Kits’ contain all the essential components to ‘Activate More Grip’.
Product Features:
See More
Product Features:
- Hand picked Whiteline bushings and/or alignment, geometry products best suiting your vehicle.
- Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
- Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
Royal Purple – Max Performance Synthetic Power Steering Fluid (Part No.01326)
from
$6.99
Max Performance Synthetic Power Steering Fluid
In-Demand Control Arms for 2021 Subaru WRX STIs
Select from 3 premium Control Arms parts for your 2021 Subaru WRX STI, with prices ranging from $13.49 to $204.99.
MOOG – Suspension Control Arm (Part No.RK100136)
from
$204.99
MOOG premium control arms for foreign and domestic nameplates are engineered for structural strength and corrosion protection.
Product Features:
See More
Product Features:
- EASY TO INSTALL — Precision tolerances for easy installation and steering alignment giving you a perfect fit right out of the box
- HIGHLY PRECISE ENGINEERING — Optimized bushings for quiet operation and resistance to wear, salt, road grime and oils
- COMPREHENSIVE COVERAGE — Available for foreign and domestic nameplates
- Construction and design validated by MOOG engineers
- Broad coverage for foreign and domestic applications
- R-Series (RK) products are the right choice for value-driven repair
Dorman – Suspension Control Arm Bushing (Part No.533-844)
from
$14.49
This suspension control arm bushing is precision-engineered and rigorously tested to provide reliable replacement for the original equipment on specific vehicles.
Product Features:
See More
Product Features:
- Direct replacement – fits and performs like the original equipment bushing on specific vehicles
- Reliable fit – precision-engineered to match the design and dimensions of original components
- Durable construction – manufactured to strict standards using sturdy, safe materials
- Rigorously tested – thorough quality control measures ensure longevity
MOOG – Suspension Control Arm Bushing (Part No.K202060)
from
$13.49
Product Features:
See More
- HIGHLY PRECISE ENGINEERING — Optimized for quiet operation and resistance to wear, salt, road grime and oils
- PREMIUM MATERIALS — Made from high-quality elastomer compounds for durability and ride performance
- OE-STYLE DESIGN — Engineered to match or exceed OE requirements
- RIGOROUS TESTING — Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
Top-Rated Suspension Parts Brands For Your 2021 Subaru WRX STI
Shop for the best-rated brands offering Suspension Parts and other products for your 2021 Subaru WRX STIs. Below you’ll find some of our best rated Suspension Parts from Valvoline, and more. Suspension Parts from these brands that fit a 2021 WRX STI start at just $12.99 and are rated as high as 4.8 stars. OEM and aftermarket Suspension Parts don’t get more top quality, durable, and affordable than from the brands below.
Popular Valvoline 2021 Subaru WRX STI Suspension Parts
When it comes to maintaining or upgrading your 2021 Subaru WRX STI, using quality Suspension Parts is essential to ensure durability and a perfect fit. Valvoline ticks all of those boxes. We offer a wide selection of Valvoline Suspension Parts, specifically designed for the 2021 Subaru WRX STI. With over 2 Valvoline brand Suspension Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $12.99, with an average price of just $24.49. Plus, with over 137 customer reviews and an average rating of 4.8 stars, you can trust that our Valvoline Suspension Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
FAQs for 2021 Subaru WRX STI Suspension Parts
Which Suspension Parts are best-sellers for 2021 Subaru WRX STIs?
Out of 10 Suspension Parts that fit 2021 Subaru WRX STIs, the following parts are the top sellers:
- Suspension Control Arm (11620091) – $204.99
- Suspension Control Arm Bushing (50211982) – $14.49
- Suspension Control Arm Bushing (50037370) – $13.49
What’s the price range for 2021 Subaru WRX STI Suspension Parts?
Suspension Part prices for the 2021 Subaru WRX STI start at $6.99 and go up to $789.99 for the most premium parts.
What’s the average price of a Suspension Part for a 2021 Subaru WRX STI?
The average price for Suspension Parts for the 2021 Subaru WRX STI is $158.89. Keep in mind the variety of part types within our Suspension Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Suspension Parts for other Subaru WRX STI model years?
What are the cheapest Suspension Parts for my 2021 Subaru WRX STI?
The cheapest 2021 Subaru WRX STI Suspension Parts we carry in stock are:
- Max Performance Synthetic Power Steering Fluid (11150908) – $6.99
- ATF for Mercon®V Applications Conventional, 1 Quart (12079140) – $12.99
- Suspension Control Arm Bushing (50037370) – $13.49
- Suspension Control Arm Bushing (50211982) – $14.49
- Suspension Trailing Arm Bushing (50312788) – $16.99
What types of Suspension Parts do you sell for my 2021 Subaru WRX STI?
As of 11/2/25, these are some of the most in-demand types of Suspension Parts for a 2021 Subaru WRX STI:
Can I get help with 2021 Subaru WRX STI Suspension Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Subaru Suspension Parts and more.
What is your return policy for Subaru WRX STI Suspension Parts?
Advance Auto Parts keeps returns simple. For new Subaru WRX STI Suspension Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
