TEIN S.Tech Lowering Springs for Toyota GR Supra A90

Give your Toyota GR Supra a lower, more aggressive stance with the TEIN S.Tech Lowering Spring Kit SKTJ4-S3B00.

The S.Tech range is designed for drivers who want to improve the visual stance and suspension response of their car while retaining the original dampers. TEIN develops the spring rate and ride-height change together rather than simply producing the largest possible drop, helping provide a practical suspension upgrade for performance road cars.

For the A90 3.0-litre Supra application, TEIN lists a ride-height reduction of approximately 30mm at the front and 25mm at the rear. Spring rates are 3.6 kgf/mm at the front and 10.5 kgf/mm at the rear.

Improved Supra Stance

Reducing the standard ride height closes the factory wheel arch gap and gives the GR Supra a more planted appearance. The moderate drop works particularly well with the Supra’s wide body and factory 19-inch wheels, while also complementing aftermarket wheel and tyre combinations where suitable clearance has been checked.

Sharper Road Handling

The lower ride height reduces the vehicle’s centre of gravity, while the revised spring rates can help reduce excessive body movement during cornering, braking and acceleration.

For enthusiastic UK road driving, this can make the Supra feel more settled and responsive without requiring the cost or adjustability of a full coilover conversion.

Designed to Work with OE-Style Dampers

TEIN S.Tech springs are designed as replacement lowering springs rather than complete suspension assemblies. The factory-style shock absorbers, top mounts and associated suspension components are retained unless they require replacement because of age or wear.

When lowering a higher-mileage Supra, it is sensible to inspect the dampers, bump stops, mounts and suspension bushes while the suspension is dismantled.

Important Rear Bump Stop Modification

TEIN specifies a particular rear bump-stop installation procedure for SKTJ4-S3B00.

The manufacturer’s instructions state that the OE rear bump rubber requires modification and that the supplied TEIN bump rubber and dust boot must be installed in the specified sequence. The installation instructions supplied with the kit should therefore be followed exactly.

Professional suspension installation is recommended.

Wheel Alignment Recommended

Any change in vehicle ride height can alter suspension geometry. A full four-wheel alignment should therefore be carried out after installation and after the springs have settled.

Correct alignment helps protect tyre life and ensures the Supra performs as intended.

Suitable Applications

This kit is particularly suited to Supra owners looking for:

• A lower and more aggressive stance
• Reduced wheel arch gap
• Improved body control
• A lower centre of gravity
• A road-focused suspension upgrade
• An alternative to full coilovers
• TEIN suspension components from an established Japanese performance brand

UK Fitment Notice

Toyota confirms that the fifth-generation GR Supra was introduced to the UK in 2019 with its turbocharged 3.0-litre straight-six engine. The 2.0-litre four-cylinder model joined the UK range in January 2021, while a six-speed manual version of the 3.0 was introduced in 2022.

TEIN directly lists SKTJ4-S3B00 for the 3.0-litre A90 application and also lists the same SKU for the Japanese-market DB22 2.0 SZ-R. However, TEIN’s UK catalogue does not currently provide a dedicated GBR-specific Supra entry for this spring kit.

For this reason, UK 2.0-litre fitment should be confirmed using the vehicle chassis/VIN before ordering rather than assumed solely because the Japanese DB22 application uses the same spring part number.

4. Key Features

• Genuine TEIN S.Tech lowering spring kit
• Manufacturer part number SKTJ4-S3B00
• Developed for Toyota GR Supra A90 applications
• Approximate A90 3.0 lowering: 30mm front / 25mm rear
• Front spring rate: 3.6 kgf/mm / 202 lb/in
• Rear spring rate: 10.5 kgf/mm / 588 lb/in
• Front free length: approximately 264mm
• Rear free length: approximately 297mm
• Lower centre of gravity
• Reduced factory wheel arch gap
• More purposeful performance-car stance
• Designed for road/performance use
• Retains OE-style dampers
• Ideal alternative to a complete coilover kit
• Rear bump-stop modification required according to TEIN instructions
• Professional fitting and four-wheel alignment recommended

TEIN’s published spring rates, dimensions and lowering figures are taken directly from its application data.

5. Technical Specifications

Manufacturer note: application-specific ride-height figures can differ depending on vehicle specification. For example, TEIN’s Japanese DB42 reference vehicle is quoted at approximately 25mm front / 20mm rear, whereas its general A90 3.0 application is quoted at approximately 30mm front / 25mm rear.

6. Vehicle Fitment / Compatibility

Verified Application Basis

Toyota GR Supra A90 – 3.0 Turbo

TEIN explicitly publishes SKTJ4-S3B00 for the 3.0-litre A90 Supra.

Toyota’s UK documentation confirms the UK model uses a 2,998cc turbocharged straight-six. Current Toyota technical literature identifies the engine as B58B30M1 with 335bhp / 340PS and 500Nm.

UK-market models relevant to this application

• GR Supra 3.0 Pro
• GR Supra 3.0
• GR Supra 3.0 Pro Special Edition

Toyota introduced the manual 3.0-litre models to the UK range in 2022 alongside the existing automatic versions.

2.0-litre warning

TEIN lists SKTJ4-S3B00 for the Japanese-market DB22 2.0 SZ-R, with approximately 10mm front and 25mm rear lowering.

Toyota introduced the 2.0-litre GR Supra to the UK in January 2021.

However, because TEIN does not publish a dedicated UK/GBR 2.0 Supra listing for this SKU, UK 2.0 compatibility should be checked against the chassis/VIN before purchase.

FAQ

Do TEIN S.Tech springs fit the Toyota GR Supra A90?

Yes. TEIN lists SKTJ4-S3B00 for the 3.0-litre Toyota Supra A90 application. TEIN also lists the same part number for the Japanese DB22 2.0 SZ-R, although UK 2.0 compatibility should be confirmed against the vehicle chassis before ordering.

How much do TEIN SKTJ4-S3B00 springs lower the Supra A90?

TEIN quotes approximately 30mm front and 25mm rear for its general 3.0-litre A90 application. The exact finished ride height can vary depending on model specification, suspension condition and vehicle weight.

What are the spring rates for TEIN SKTJ4-S3B00?

The published spring rates are approximately:

Front: 3.6 kgf/mm / 202 lb/in
Rear: 10.5 kgf/mm / 588 lb/in.

Can I use TEIN S.Tech springs with the standard Supra dampers?

S.Tech is a replacement spring kit rather than a complete coilover system, so it is intended to work with OE-style dampers. Existing dampers should nevertheless be inspected for wear before installation.

Will lowering springs improve my Toyota Supra’s handling?

Lowering the vehicle reduces its centre of gravity and the revised spring rates can reduce body movement during cornering, braking and acceleration. The main purpose of S.Tech is to combine a lower stance with road-orientated suspension performance.

Do I need wheel alignment after fitting lowering springs?

Yes. A four-wheel alignment is strongly recommended after fitting and once the springs have settled because changing ride height can change suspension geometry and tyre contact angles.

Does SKTJ4-S3B00 fit the UK Toyota GR Supra 2.0?

TEIN lists SKTJ4-S3B00 for the Japanese-market 2.0-litre DB22 SZ-R. However, TEIN’s UK catalogue does not specifically publish a GBR 2.0 Supra application. For a UK 2.0 car, confirm fitment using the chassis number or VIN before ordering.

Is any modification required when fitting these springs?

Yes. TEIN’s application data specifies a rear bump-stop modification and installation procedure. The OE and TEIN bump rubbers must be modified and assembled according to the manufacturer’s fitting instructions.