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SKU: 4N915R
Swift Spec-R Lowering Springs for Nissan Z
Elevate your Nissan Z’s performance to unparalleled heights with Swift Spec-R Lowering Springs, the definitive choice for track enthusiasts and style-driven drivers who demand the absolute best. Engineered with precision in Japan, these springs outperform all competitors, delivering a perfect blend of razor-sharp handling, aggressive aesthetics, and daily-driving comfort. Unlike other lowering springs that sacrifice ride quality for looks, Swift Spec-R springs are track-tested and tuned to maximize your Nissan Z’s suspension geometry, ensuring superior grip, reduced body roll, and a dynamic driving experience that sets the standard for excellence.
Why Swift Spec-R Springs Are the Best Choice:
- Unmatched Performance: Designed to push the limits of OEM shock valving, Swift Spec-R springs feature stiffer spring rates (Front: 11.3 kg/mm or 632 lbs/inch, Rear: 10.0 kg/mm or 560 lbs/inch) for enhanced cornering precision and responsiveness, making them ideal for HPDE events, SCCA competitions, or spirited street driving.
- Proprietary H5S.TW Steel Alloy: Swift’s exclusive material ensures consistent spring rates, maximum stroke, and the lightest weight possible, providing the fastest reaction to road conditions for a smooth yet controlled ride.
- Optimized Ride Height: Lowers your Nissan Z by 1.1 inches (28mm) front and rear, striking the perfect balance between aggressive stance and functional suspension travel, avoiding the harshness or bottoming-out issues common with inferior springs.
- Superior Engineering: Fewer coils reduce unsprung mass and eliminate coil bind, increasing usable stroke for better traction and comfort. Swift’s unique manufacturing process guarantees durability and precision fitment.
- Track-Proven Pedigree: Trusted by world-class race teams in road racing, rally, drift, and more, Swift Spec-R springs deliver championship-level performance you can feel on every corner.
What’s Included in Your Purchase:
- Full Set of 4 Springs: Two front and two rear Swift Spec-R Lowering Springs, designed specifically for your Nissan Z.
- Part Number: 4N915R
- Warranty: Swift Springs’ limited 1-year warranty against defects in materials and workmanship, ensuring peace of mind.
- Installation Compatibility: Engineered to work seamlessly with stock or aftermarket shocks/struts
Note: Not compatible with OEM electronic damping control systems unless explicitly stated.
Vehicle Fitment:
- Year: 2023, 2024, 2025
- Make: Nissan
- Model: Z (RZ34 chassis)
- Note: Fitment confirmation is based on year, make, and model. Always verify fitment by reviewing the full product description and your vehicle’s specifications before installation.
Transform Your Nissan Z Today:
Swift Spec-R Lowering Springs are the ultimate upgrade for drivers who refuse to compromise on performance, style, or quality. Whether you’re dominating the track or turning heads on the street, these springs deliver an unmatched driving experience that outperforms and outlasts the competition. Don’t settle for less—choose Swift Spec-R and unleash your Nissan Z’s full potential.
| SPRING RATE | DROP | ||||||
|---|---|---|---|---|---|---|---|
| Front | Rear | Front | Rear | ||||
| 11.3 kg/mm | 632 lbs/inch | 10 kg/mm | 560 lbs/inch | -28 mm | -1.1 Inch | -28 mm | -1.1 Inch |
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Welcome to the Swift Springs collection, where cutting-edge engineering meets unmatched performance. Founded in 1997 in Tokyo, Japan, as a motorsports division of Tokyo Hatsujo Manufacturing Co, Ltd., Swift Springs has been at the forefront of the spring industry since 1924. Our Legacy in Motorsports With first-hand involvement in the racing industry, Swift Springs has quickly risen through the ranks to become one of the most recognized and respected names in performance coil springs globally. Our commitment to excellence has made us a staple in various genres of motorsports. Why Choose Swift Springs? Superior Engineering: Our springs are designed to outperform competitors, offering the best characteristics in the market. Lightweight & Durable: Swift Springs are engineered to be the lightest and most durable, ensuring your vehicle performs at its best. Linear Performance: Enjoy the most linear characteristics in your suspension system, providing better handling and stability...
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