WHITELINE SR49XZ-FFA Rear Sway Bar 22MM

( Brand: Whiteline ), ( Manufacturer Part Number: SR49XZ-FFA ), ( Type: Sway Bar ), ( Placement On Vehicle: Rear ), ( Color: Black )

Review WHITELINE Subaru 22mm Adjustable Rear Sway Bar fits WRX STI 2015–2021

The **Whiteline SR49XZ-FFA 22mm Rear Sway Bar** is a meticulously engineered aftermarket component designed specifically for Subaru WRX STI models built between the 2014 and 2023 generations, covering the FA and FB platform iterations. This high-performance sway bar is crafted from a premium, high-grade billet aluminum alloy, ensuring an optimal balance of stiffness, durability, and weight savings compared to the stock unit. The 22mm diameter bar is engineered to provide enhanced cornering stability, improved suspension geometry, and a more composed handling feel, particularly under aggressive driving conditions or when paired with other performance upgrades like stiffer springs, sway bar links, or lowered suspension systems. The SR49XZ-FFA features Whiteline s signature precision-machined design, with smooth, polished ends and a polished center section to minimize aerodynamic drag and reduce unsightly rust or corrosion over time. Unlike stock sway bars, which are often prone to fatigue or bending under heavy loads, this upgraded unit is built to withstand the demands of track use, drift sessions, or daily driving with confidence. The bar s increased stiffness helps mitigate body roll, allowing the rear tires to maintain better contact with the road during hard cornering, which translates to improved traction, reduced understeer, and a more neutral steering response. Installation is straightforward, requiring only basic tools, and the bar is compatible with stock or upgraded sway bar mounts, though Whiteline recommends using their own high-quality links for optimal performance. Whether you re chasing a sharper, more engaged driving experience or preparing your STI for track days, the SR49XZ-FFA is a reliable and high-value upgrade that delivers measurable improvements in handling dynamics without compromising reliability.

### Pros and Cons of buying a Whiteline SR49XZ-FFA 15-21 Subaru WRX STI 22mm Rear Sway Bar

1. **Improved Handling and Stability** A thicker sway bar reduces body roll, particularly during aggressive cornering, making the car feel more planted and responsive. This is especially noticeable in high-speed or drift-oriented driving.

2. **Better Weight Distribution** The 22mm diameter is thicker than the stock sway bar, which can help balance the car s weight more evenly, improving traction and reducing understeer in some cases.

3. **Durability and Quality** Whiteline is a well-regarded brand in the performance aftermarket, known for high-quality materials and precise machining. This sway bar is designed to handle the stresses of spirited driving without excessive wear.

4. **Compatibility with Other Mods** Since it fits the 2015-2021 WRX STI, it pairs well with other Whiteline or third-party suspension upgrades (e.g., coilovers, bushings, or sway bar links), allowing for a cohesive performance package.

5. **Easier Installation** Whiteline sway bars are designed for straightforward installation, often requiring only basic tools. The kit typically includes necessary hardware (mounts, bolts, and sometimes links), reducing the need for additional purchases.

6. **Positive Community Feedback** Many WRX STI enthusiasts report noticeable improvements in handling after installing this sway bar, particularly in drift and track applications. Online forums and reviews often highlight its effectiveness.

7. **Aesthetic Appeal** While not a primary function, the Whiteline branding and polished finish give the car a more customized, high-performance look.

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1. **Cost** As an aftermarket part, it is more expensive than the stock sway bar. Prices typically range between $200 and $300, depending on where you purchase it. This may be a significant investment if you're on a tight budget.

2. **Potential Overkill for Daily Driving** If you primarily use your WRX STI for daily commuting or light spirited driving, the benefits of a thicker sway bar may not be as noticeable. The stock sway bar is already adequate for most street applications, and a 22mm upgrade might feel too stiff or reduce comfort.

3. **Compatibility with Other Suspension Mods** If you have other suspension components (e.g., lowered springs, stiffer bushings, or coilovers), the 22mm sway bar might make the car feel too stiff or increase stress on other parts. It s important to ensure all mods are balanced for optimal performance.

4. **Installation Challenges** While generally straightforward, installation can be tricky if you're not experienced with suspension work. Misalignment or improper torque can lead to premature wear or handling issues. Some users may need to replace sway bar links or adjust mounting points for a perfect fit.

5. **Potential for Excessive Stiffness** In very aggressive driving scenarios (e.g., heavy drifting or track use), a 22mm sway bar can make the car feel overly stiff, leading to less forgiving feedback or even damage if the car is pushed too hard. Some drivers prefer a slightly softer sway bar (e.g., 19mm) for better control in extreme conditions.

6. **Resale Impact** While not a major concern for most owners, some buyers may prefer stock or aftermarket sway bars that are easier to replace or more common. A customized sway bar might slightly reduce resale value, though this is usually negligible for enthusiasts.

7. **Quality Control Concerns (Rare)** While Whiteline is generally reliable, as with any aftermarket part, there is a small risk of receiving a defective unit. Always purchase from a reputable seller and inspect the part upon arrival.

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The Whiteline SR49XZ-FFA 22mm rear sway bar is an excellent upgrade for the 2015-2021 Subaru WRX STI, particularly for drivers who prioritize handling, stability, and performance. It is well-suited for enthusiasts who enjoy spirited driving, drifting, or track use, as it significantly reduces body roll and improves weight distribution. The quality and durability of the part, along with its compatibility with other Whiteline mods, make it a strong choice for those building a performance-oriented suspension package.

However, it may not be necessary for daily drivers who primarily use their WRX STI for commuting or casual driving. In such cases, the stock sway bar or a slightly softer aftermarket option might be more practical. Additionally, potential buyers should ensure that the upgrade aligns with their overall suspension setup to avoid stiffness or handling inconsistencies.

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- You are actively modifying your WRX STI for improved handling, particularly for drifting, track days, or aggressive street driving.

- You are already running other Whiteline or high-quality suspension components (e.g., coilovers, bushings) and want a cohesive performance package.

- You prioritize durability and brand reputation over cost savings.

- You are comfortable with installation or have access to a trusted mechanic to ensure proper setup.

- You use your WRX STI primarily for daily driving and don t notice significant handling issues with the stock sway bar.

- You are on a tight budget and can achieve similar benefits with a lower-cost alternative (e.g., a 19mm sway bar or a different brand).

- You plan to heavily modify other suspension components without testing the balance of stiffness and comfort.

- You are unsure about installation or lack experience with suspension work.

**Final Verdict:** For most WRX STI enthusiasts who are serious about performance, the Whiteline SR49XZ-FFA 22mm rear sway bar is a worthwhile investment. It delivers measurable improvements in handling and stability while maintaining high quality. Pair it with proper installation and complementary mods for the best results.

Details:

No extended warranty is offered. Please carefully inspect all pictures and in our listings. Installation. Normal wear from being a used item.

Extenuating circumstances, such as unexpected weather conditions and shortages in carrier services, can affect delivery schedules. Up for sale Whiteline 22mm Adjustable Rear Sway Bar in good condition and full working order. Removed from a 2020 Subaru WRX STI.

part #: sr49xz price

• $200.00

specifications swabasus:

• for models: Wrx, Sti
• for makes: Subaru
• for years: 2015-2021
• brand: Whiteline
• mpn: Sr49xz-ffa
• type: Sway Bar
• placement on vehicle: Rear
• color: Black

returns swabasus:

• policy: No Returns

seller swabasus:

• city: Fort Myers, Florida
• # reviews: 3269
• rating: 99.8%

shipping swabasus:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• type: Fixed
• cost: $20.00
• transit: 4-11 Days
• class: Standard

general swabasus:

• Car Truck Parts Accessories > Steering Suspension > Sway Bars, Links Bushings
• condition: Used

offer swabasus:

• started: May 15, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0

payments swabasus:

• credit card: Visa
• wallet: Apple-pay
• other

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