SWIFT SPRINGS ZY-4X909R 14-UP 4X909RS

( Brand: Swift Springs ), ( Manufacturer Part Number: ZY-4X909R ), ( Placement On Vehicle: Front, Left, Rear, Right )

Review SWIFT SPRINGS Bmw 14-up fits M3 F80

The Swift Springs ZY-4X909R is a high-performance aftermarket coil spring set specifically designed for the BMW M3 F80 model vehicles manufactured between 2014 and up. These springs are part number 4X909RS in Swift Springs' product catalog.

These springs are engineered to deliver improved handling and responsiveness without compromising ride comfort. Each spring is constructed from premium SAE 9254 high-tensile chromium-silicon steel, ensuring both strength and durability while offering a significant reduction in unsprung weight compared to OEM springs. This weight reduction directly benefits vehicle dynamics, leading to enhanced control and a more connected driving experience.

The Swift Springs ZY-4X909R set provides a ride height decrease of approximately 0.5 inches to 1 inch (12.5mm to 25mm), depending on the specific vehicle configuration. This adjustment not only results in a sportier appearance but also optimizes weight distribution and lowers the center of gravity for improved agility and stability, contributing to overall performance enhancement.

Additionally, these springs offer a range of fitment flexibility, making them suitable for modified BMW M3 F80s with different suspension setups, including aftermarket adjustable dampers and upgraded anti-roll bars.

Installing the Swift Springs ZY-4X909R instance on your BMW M3 F80 is a straightforward process, and they are compatible with OEM dampers. However, it is essential to follow proper installation guidelines and use appropriate tools to ensure a successful fitting experience. Swift Springs provides a detailed installation manual with each purchase to ensure ease of installation alongside clear guidance throughout the process.

Please note that tires with larger diameters than stock may result in clearance issues, and checking the tire pressure regularly is crucial to maintain the superior performance offered by these springs.

In summary, the Swift Springs ZY-4X909R coil springs are an excellent choice for BMW M3 F80 owners seeking an enhanced driving experience with improved handling and reduced body roll, all while maintaining an acceptable level of ride comfort. These high-quality springs offer the added benefits of a sportier appearance and increased flexibility for various suspension modifications.

Swift Engineering's ZY-4x909R coil springs are a popular aftermarket upgrade option for BMW M3 (F80, 14-up) models. Here are some pros and cons that can help you decide whether or not to purchase these springs:

1. Improved handling: Swift springs offer increased stiffness compared to OEM springs, providing better handling and reduced body roll during cornering.

2. Lower ride height: These springs can help achieve a desired lowering while maintaining proper ride height and suspension geometry for improved performance and aesthetics.

3. Increased responsiveness: Swift springs provide a more direct response to road inputs, resulting in a more engaging and enjoyable driving experience.

4. Durability: Swift springs are heat-treated and made of high-quality materials, ensuring durability and reliability.

5. Customization: Swift offers various spring rates to cater to different driving styles and preferences.

6. Adjustability: Swift offers adjustable spring platform options (pro-coil or adjustable monotube shocks) for fine-tuning ride quality and handling characteristics.

1. Cost: Swift springs are generally more expensive than OEM springs.

2. Installation complexities: Installing aftermarket springs can be more complicated compared to OEM springs, and may require additional components, such as adjustable suspension components or new shock absorbers.

3. Alignment: Since the ride height and spring rates are adjusted, it s crucial to perform a wheel alignment after the installation to ensure proper steering and tire wear.

4. Ride quality: Swift springs can provide a stiffer ride, resulting in increased feedback and a more connected driving experience but may affect daily driving comfort.

5. Safety: A lower ride height could potentially lead to increased risk in certain situations, such as speed bumps, steep driveways or uneven road surfaces.

Swift Engineering's ZY-4x909R coil springs offer numerous advantages for BMW M3 (F80, 14-up) owners seeking improved handling and lower ride height. These benefits come with some downsides, including increased cost, complexities in installation, and potential changes to ride quality or safety. It's crucial to weigh these factors against the desired improvements and consider personal driving preferences. Before making the purchase, consult with a trusted tuning shop or aftermarket specialist with experience installing Swift springs on BMW M3 vehicles to ensure a successful installation.

If you're an enthusiast or racer who prioritizes improved handling and performance over daily driving comfort, purchasing Swift Engineering's ZY-4x909R coil springs would be a smart investment. However, if you prioritize daily driving comfort, you might want to consider alternative suspension upgrades, such as adjustable dampers or sway bars, to better suit your driving style. Ultimately, your personal driving preferences, budget, and vehicle usage will determine whether or not the pros outweigh the cons for these aftermarket suspension upgrades.

Details:

I am guessing on the 4 at beginning of part number based other results because can't read whole tag. Friend gave me these to sell when he got rid of his 2016 M3. No idea why he didn't have the rears as well, maybe they were still on car.

part #: zy4x909r price

• $397.50

specifications coilspringi:

• for models: M3, F80
• for makes: Bmw
• brand: Swift Springs
• mpn: Zy-4x909r
• placement on vehicle: Front, Left, Rear, Right

seller coilspringi:

• # reviews: 539
• city: Forks, Washington
• rating: 95.5%

offer coilspringi:

• options: Ship-to-home
• started: January 28, 2025
• sold: 0
• availability: In Stock
• quantity: 1

payments coilspringi:

• other
• wallet: Paypal
• credit card: Diners-club

general coilspringi:

• Car Truck Parts Accessories > Steering Suspension > Leaf Coil Springs
• condition: Used

returns coilspringi:

• policy: No Returns

shipping coilspringi:

• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS
• transit: 4-10 Days
• cost: $36.50
• class: Standard

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