If you're diving into the world of performance tuning, you’ve probably heard of Swift Springs. They've been around for over 90 years, and let me tell you, they know their stuff when it comes to springs. These guys have put in the hours—like, serious hours—crafting springs that aren’t just about being stiff or soft. They’re all about that sweet spot where traction, ride quality, and predictability meet.
Now, many enthusiasts swap springs around, often feeling like they’re just trading one kind of stiffness for another. But with Swift, it’s different. Imagine springs that actually give you a noticeable boost in traction, a smoother weight transfer, and keep those tire temps down. Sounds great, right? That’s not just talk; it’s what Swift has been working on. They’ve taken the “what if” and made it real.
What sets these springs apart is their material. They use H5S.TW. steel—way better than the usual silicone chrome stuff. This allows them to wind springs with fewer coils, which cuts down on unsprung weight and gives you more stroke. Less weight means better handling, and more stroke means your ride can soak up bumps without feeling like you’re in a bouncy castle.
And if you’re worried about fitment, don’t be. Swift has introduced a metric line of coilover springs that makes it easy to find what you need without the confusion of imperial measurements. They’ve got a range of sizes, with inner diameters from 60mm (2.25") to 70mm (2.75"), spring lengths from 127mm (5") to 280mm (11"), and spring rates that span from 3kg (168lbs) all the way up to 34kg (1900lbs). So whether you’re just looking for a comfy ride for your daily driver or gearing up for a full-on race setup, they’ve got you covered.
Here are the specs for the Z70-203-200 Swift Springs Metric Coilover Spring:
Fitment:
Heads up: You might need more than one for your setup. Just something to keep in mind!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Swift Springs was founded in 1997 in Tokyo, Japan as a motorsports division of Tokyo Hatsujo Manufacturing Co, Ltd., which has been leading the spring industry since 1924. Swift Springs was established to demonstrate their superior engineering by developing the next generation of sport suspension coilover springs. The scope of the project was to surpass the best of any other brand or design in the market by making the springs ultra-durable and lightweight, while still being affordable.
World-Class Racing ExperienceSince its inception, Swift Springs has been led by former racer and suspension expert Kei Yokota and the chief engineer Yasu Saito. Their first-hand experience and involvement within the race industry have propelled Swift Springs through the ranks of the world’s most prestigious races. Swift quickly became the most recognized and respected name in performance coil springs in motorsports all around the globe.
The brand’s impressive motor racing history started in 1998 with a Nissan Skyline GT-R in the Super Taikyu Endurance championship series in Japan. Swift Springs moved on to support championship teams in the 24 Hours Nurburgring, 24 Hours of Le Mans, D-1 World Grand Prix, F3, Formula Toyota, the Super Taikyu series, and many other world-class races. In 2004, Team Goh’s Audi R8 won first place with Swift Springs at the 24 Hours of Le Mans race.
All Springs are not Created EqualAll coilover spring manufacturers claim to have four factors: lightest in weight, largest amount of stroke, most consistent spring rate, and highest durability against loss of spring height. Only the innovative and revolutionary Swift Springs achieve the fifth factor which is having the fastest reaction speed possible to gain compliance on road surface conditions. While diameters and spring rates may be similar across several brands, the spring manufacturing process is what determines exactly how well they will perform. To achieve all five factors, Swift Springs developed a proprietary steel alloy "HS5.TW", as well as a patented winding method that no other coilover manufacturer can duplicate.
Swift Springs provide drivers with a difference that they can feel and several racing benefits. Swift Springs use a very strong alloy, which means they can use a thinner diameter of wire. In turn, the thinner wire is much lighter and extremely vital given it is unsprung weight. Thinner wire also means that there is more gap between the coils with more “stroke” for the spring. This gives the spring more travel and does not “bottom” as early as thicker wire springs. Lastly, Swift Springs prove to be incredibly consistent and reliable. At the end of one year of racing, Swift Springs are typically within .5-1.0 percent of the rate they were when they just came out of the box.
Upgrade to Swift Springs at Vivid RacingThere is no better time than now to upgrade your vehicle’s suspension to improve its overall stance and performance. Not only do Swift Springs change the appearance of your ride and give it a more aggressive look, but they also enhance the ride quality all around. Vivid Racing carries a wide assortment of Swift Springs’ lowering springs and coilover springs for a range of applications. If you cannot find the exact part you’re looking for above or have any questions regarding springs and fitment, call our parts team at (480) 966-3040.