By Tein

Tein Flex Z Coilovers - Subaru WRX/STI VA 15-21

Regular price $1,860.00
Regular price Sale price $1,860.00
Shipping calculated at checkout.
Brand: Tein
Availability: In stock
SKU: VSSB2-C1SA4
Regular price $1,860.00
Regular price Sale price $1,860.00

TEIN FLEX Z Coilovers
Incredible Value. Proven Performance.

TEIN FLEX Z offers the ideal balance between affordability, comfort, and dynamic handling — perfect for spirited street driving and weekend track use. With a sealed twin-tube design and made-in-Japan quality, FLEX Z is one of the most cost-effective coilovers on the market.


Key Features:

  • Incredibly Price-Friendly: A new sealed structure and production process drastically reduce costs — giving you premium coilover performance without the premium price tag.
  • Sealed Structure Design: A crimped, sealed shell with pre-filled oil and gas cuts down on manufacturing time and cost, while maintaining durability and function.
  • Twin-Tube Construction: Allows for longer stroke and smoother operation over uneven surfaces. Enjoy improved ride comfort at low speeds and stability at high speeds.
  • 16-Level Damping Force Adjustment: Fine-tune both compression and rebound with a simple dial. Adapt your ride for daily driving, track use, or anything in between.
  • Vehicle-Specific Mounts Included: Comes with custom mounts for easy installation. Pillowball upper mounts with camber adjustment are included where applicable.
  • Optional EDFC Compatibility: Ready for TEIN's EDFC series, allowing electronic in-cabin damping control (sold separately; vehicle compatibility varies).

Built to Last:

  • Dust Boots: Protect the piston rod from debris and damage with high-durability boots. Some models retain OE boots.
  • No-Sag Springs: Made from high-tensile SAE9254 steel, these powder-coated springs resist sagging and corrosion even under extreme use.
  • High-Performance Damper Oil: Delivers consistent damping across a wide temperature range. Resists foaming, cavitation, and long-term degradation.
  • TEIN-Green Powder Coating: Dual-layer anti-rust coating with patented ZTP treatment for unbeatable corrosion resistance — perfect for harsh climates.

Easy Replacement Service
Instead of overhauling, TEIN offers a cost-effective replacement service. Just swap out the core shock without replacing the full kit — saving time and money.


Why Choose TEIN FLEX Z?

  • ✅ High-performance ride quality
  • ✅ Made in Japan reliability
  • ✅ Incredible value for money
  • ✅ Street & track ready
  • ✅ Backed by TEIN’s industry-leading anti-rust performance

What clients say


  • Really fast and high quality customer support, my order got to me faster than the quoted time too. No complaints

  • The team took a mostly broken car after some work done elsewhere, and have systematically made it reliable and fast for a fair price. The staff are invested in the work they do which also makes a big difference.

  • Jeff was extremely helpful in assisting me with my exhaust. Always kept me updated and answered any queries in a timely manner. Will definitely be coming back for my future mods

  • Justin and his crew is amazing! Always ready to help and service with a smile. Trusty, friendly and reliable! Had my car sent in for repair twice and it’s fixed on time, at a reasonable price and with no issues. Highly recommended!

  • Easy to deal with and part was ordered quickly

Fitment & Compatibility


How do I know if this part fits my car?

We recommend checking your vehicle's make, model, year, and variant carefully. Most product listings include compatibility notes, but if you're unsure, contact us before purchasing.

Can you confirm fitment before I place my order?

Absolutely. Send us your VIN or Rego and we’ll confirm fitment for you.

Do you offer installation at your workshop?

Yes, we offer installations for most parts at our Ringwood workshop. Contact us to book or get a fitting quote.

Shipping & Handling


How long will it take for my order to arrive?

Most in-stock items ship within 1-2 business days. Delivery time depends on your location and shipping option chosen at checkout.

Do you ship internationally?

Currently, we only ship within Australia. For international enquiries, please contact us directly.

Can I pick up my order in person?

Yes, local pickup is available from our Ringwood workshop. Simply select ‘Local Pickup’ at checkout and we’ll notify you when your order is ready.

Please note: Some items are stored offsite and may need to be transferred from our warehouse, which can add a few business days before pickup is available.

Returns & Warranty


Can I return a product if it doesn’t fit?

Returns are accepted within 14 days if the item is unused and in original packaging. Please see our full Returns Policy for details.


What warranty comes with your products?

All products come with the manufacturer’s warranty. If you experience any issues, contact us and we’ll assist with the claim process.