Tein SKTJ4-S3B00 S.Tech Lowering Springs Kit for 20-26 Toyota GR Supra A90/A91

Vehicle Fitment

• 2020-2026 Toyota GR Supra 3.0 (A90, 3.0L B58 Turbo I6, RWD)
• 2021-2026 Toyota GR Supra 2.0 (A91, 2.0L B48 Turbo I4, RWD)

Fitment Notes

• A90/A91 chassis only
• RWD only
• Rear bump rubber modification required during install
• Designed for OEM dampers
• Set of 4 springs (2 front, 2 rear)

Features

• S.Tech progressive spring rate
• 1.0 in front lowering
• 0.8 in rear lowering
• Chrome vanadium SAE9254V steel
• Cold-formed construction
• Individually tested
• Green powder coat finish
• Compatible with OEM dampers
• Rear bump stops included
• Rear dust boots included
• Road-tested by Tein engineers
• Made in Japan
• 1-year limited warranty

Specifications

• Series: S.Tech
• Spring design: progressive
• Front drop: 1.0 in (25mm)
• Rear drop: 0.8 in (20mm)
• Front spring rate: 3.6 kgF/mm (202 lbs/in)
• Rear spring rate: 10.5 kgF/mm (588 lbs/in)
• Material: SAE9254V chrome vanadium steel
• Finish: green powder coat
• Quantity: 4 springs (2 front, 2 rear)
• Damper compatibility: OEM

Included Components

• 2x Tein S.Tech front lowering springs
• 2x Tein S.Tech rear lowering springs
• 2x rear bump stops
• 2x rear dust boots
• 1x installation instructions

Product Description

The Tein SKTJ4-S3B00 S.Tech Lowering Spring Kit is engineered specifically for the 2020-2026 Toyota GR Supra A90/A91, covering both the 2.0L B48 Turbo I4 and 3.0L B58 Turbo I6 variants. Manufactured by Tein in Yokohama, Japan from premium SAE9254V chrome vanadium steel, these progressive-rate springs deliver approximately 1.0 inch of front lowering and 0.8 inch of rear lowering -- a balanced, OEM-quality drop that closes the factory fender gap, lowers the center of gravity, and sharpens handling response without sacrificing daily-driver ride comfort. Front spring rate is 3.6 kgF/mm (202 lbs/in) and rear is 10.5 kgF/mm (588 lbs/in).

S.Tech springs are designed to be used with the factory OEM dampers, making this a true bolt-on suspension upgrade with no shock replacement required. Each application is test-fitted and road-tested by Tein's suspension engineers to ensure the proper balance between performance and comfort. The kit includes Tein's custom rear bump stops and dust boots -- note that installation requires trimming the OEM rear bump rubber (cut at 20mm from top) and the Tein bump rubber (cut at 30mm from top), then reassembling them with the included dust boot. Finished in Tein's signature green powder coat and backed by a 1-year limited warranty against sag exceeding 5mm.