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TEIN FLEX Z Coilover Kit Subaru Forester S-Edition SH9 4WD 2010.10-2012.11 JPN
$1197.00

TEIN Flex Z Suspension Kit - VSSA4-C1SS3

The TEIN Flex Z Suspension Kit, model VSSA4-C1SS3, is designed to offer an exceptional driving experience for your 2010-2012 Subaru Forester S-Edition. This kit combines advanced technology with affordability, providing a remarkable upgrade over factory components. Experience the quality of "Made in Yokohama" craftsmanship while enjoying improved ride comfort and handling.

Key Features

  • Twin-Tube System: This design ensures optimal ride comfort, even on rough streets. The twin-tube system allows for sufficient stroke and low friction, resulting in a smooth ride at both low and high speeds.
  • Full-Length Ride Height Adjustment: The full-length adjustment system allows you to modify ride height with minimal impact on ride quality. This means you can achieve that lowered look without sacrificing comfort.
  • 16-Level Damping Force Adjustment: Tailor your driving experience with ease. The damping force can be adjusted step-by-step to suit your preferences, ensuring a personalized ride.
  • EDFC Compatibility: With the optional EDFC (Electronic Damping Force Controller), you can control damping force from the cockpit, enhancing convenience and performance.
  • Low-Friction Components: The new wrought aluminum spring seats and specially treated shell cases reduce friction during adjustments, making it easier to set your ride height.
  • No-Sag Springs: Crafted from high-tensile steel, these springs resist sagging and maintain their shape, ensuring long-lasting performance.
  • High-Spec Damper Oil: Formulated for stability across temperatures, this oil ensures smooth operation and consistent damping force, even during intense driving conditions.

Specifications

Front Specifications

  • Damping Force Adjustment: Yes
  • Full-Length Ride-Height Adjustable: Yes
  • Upper Mount: R/U
  • Recommended Ride Height: -55 mm (-2.2 inches)
  • Ride Height Adjustable Range: -146 mm to -32 mm (-5.7 to -1.3 inches)
  • Spring Rate: 7 kgf/mm (392 lbs/in)
  • Free Length: 225 mm

Rear Specifications

  • Damping Force Adjustment: Yes
  • Full-Length Ride-Height Adjustable: Yes
  • Upper Mount: R/U
  • Recommended Ride Height: -50 mm (-2 inches)
  • Ride Height Adjustable Range: -140 mm to 4 mm (-5.5 to 0.2 inches)
  • Spring Rate: 5 kgf/mm (280 lbs/in)
  • Free Length: 250 mm

Fitment

  • Year: 2010.10-2012.11
  • Make: Subaru
  • Model: Forester
  • Trim: S-Edition
  • Drivetrain: 4WD
  • Chassis: SH9
  • Motor Size: 2500
  • Vehicle Region: JPN

Customer Reviews

Many users have reported noticeable improvements in both handling and ride quality after installing the Flex Z suspension kit. One customer shared, "I was amazed at how much better my Forester handled after the upgrade. The ride is so much smoother, and I feel more in control during cornering. It's a fantastic investment!" Another customer noted, "The ride height adjustment was easy to make, and I love the look of my car now. Plus, the comfort hasn't been compromised at all!"

Watch It in Action

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Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Why Choose Tein Suspension?

Although there’s a massive amount of suspension companies out there, few of them have the history or reputation of Tein. With a wide range of different products at different price points, Tein offers suspension components for nearly every automotive application out there.

It all started in the early 1980s, when two rally racers couldn’t find shock absorbers which could withstand their aggressive driving techniques. After tossing the idea around, the two racers created their own suspension company, which is how Tein was born.

Tein’s shock absorbers quickly became popular with rally racers from grass roots to high-level WRC cars through the 1980s and 1990s. In 1995, Japan eliminated some of their strict laws which prohibited the use of suspension modifications and the demand for Tein quickly grew to new levels.

Twin Tube vs Mono Tube

Looking at the outside of a damper or coilover might make you think they’re all the same, but what’s inside them varies massively. There are two types of dampers which are used in the automotive industry: twin tube and mono tube. Some aftermarket suspension companies push the idea that mono tube dampers are the absolute best, but that’s really not entirely true.

While mono tube dampers are used in the majority of race cars, they simply don’t provide the same ride quality that a twin tube damper can provide.

A twin-tube design can be found on the majority of OEM shocks, low-end coilovers, and even mid-level coilovers designed for street use. It’s not a bad design by any means. Twin-tube uses an inner and outer tube. The inner tube holds the piston shaft, valve, and oil. The outer tube holds damper oil and nitrogen gas. The design allows for more suspension stroke without increasing the height of the body, providing better ride quality.

Depending on which Tein coilover you pick, it could either use a twin tube or mono tube damper. Tein is one of the few aftermarket suspension manufacturers who offers both twin tube and mono dampers, because twin tube dampers are simply more difficult to manufacture.

Should I Buy Coilovers or Lowering Springs?

While Tein’s coilovers are great and many of them are very affordable, some enthusiasts simply want something cheaper. Not everyone wants all the capabilities and benefits of a full coilover, sometimes you just want the lowered stance without everything else.

Lowering springs are typically physically smaller than OEM springs and utilize higher spring rates. With stiffer rates, total body movement is reduced which eliminates excessive weight transfer and poor handling characteristics. The lower ride height also lowers the center of gravity of the entire vehicle which further reduces body movement, especially while cornering.

Since many lowering springs use higher spring rates than the OEM units, the dampers have to work extra hard to keep the car under control. Although you may not be able to tell on the road, your OEM dampers may not be able to control your car with the higher spring rates. This problem is unique per vehicle, but it can occur with almost any car.

Coilovers theoretically fix the problem listed above by combining a higher rate spring with a damper designed to work with that spring correctly; however, that doesn’t mean all coilovers are better than the OEM suspension.

Tein coilovers are carefully designed to provide the best balance of damping, spring rate, ride quality, suspension stroke, and pricing. Many of their coilovers feature height and damping adjustment, which allows you to dial in your suspension for your exact needs. If you plan on attending any track events or just want the best performance possible, a set of coilovers is a much better purchase than lowering springs.

Spring and Damping Adjustability

The majority of Tein’s coilovers offer a significant amount of adjustability. This adjustment will typically come in the form of an adjustable collar which threads up or down the body and either compresses or decompressed the spring. This adjustment effects spring pre-load which increases the amount of force needed to compress the coilovers, but does not increase spring rate.

Many of their coilovers also offer ride height adjustment. Being able to adjust ride height and spring pre-load independently allows for much greater suspension tuning and ultimately allows for the best handling possible when properly tuned by a qualified professional.

Should You Choose Tein?

With a wide range of products at very affordable prices, Tein offers suspension components for the majority of automotive applications. All their products are very high quality and offer fantastic build quality, plus a limited warranty!

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Sale price $1,197.00
Wholesale price $1,115.10
Shipping Weight: 125.00
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Product Added At Wednesday 26 June, 2019
Product Modified At Monday 23 June, 2025
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