TEIN GSQ30-8UAS2 Street Basis Z Coilovers for 2011-2016 Scion tC AGT20L

Vehicle Fitment

• 2011-2016 Scion tC (AGT20L, FWD, 2.5L I4)

Features

• TEIN Street Basis Z ride-height adjustable coilover suspension
• Twin-tube damper design for enhanced everyday comfort
• ZT-coated threaded spring seats for durable height adjustment
• OEM upper mount reuse for straightforward installation
• Powder-coated damper bodies for corrosion resistance
• Full-length dust boots protect damper pistons
• No-sag springs to maintain ride height over time
• Balanced spring rates tuned for street driving performance

Specifications

• Part Number: GSQ30-8UAS2
• Front Spring Rate: 6 kgf/mm (≈336 lbs/in)
• Rear Spring Rate: 5 kgf/mm (≈280 lbs/in)
• Damping Adjustment: Fixed (non-adjustable)
• Ride Height Adjustable: Yes (front and rear)
• Front Lowering Range: approx. -1.0" to -3.1"
• Rear Lowering Range: approx. -1.5" to -3.0"
• Upper Mounts: Reuse OEM front & rear
• EDFC Compatible: No

Included Components

• 2x Front coilover assemblies
• 2x Rear coilover assemblies
• 4x Adjustable spring seats
• 4x Spring locks
• 4x Dust boots
• 2x Hook spanners
• 4x Rubber bump stops
• 4x Delrin thrust washers
• 1x Instruction manual

Product Description

The TEIN Street Basis Z Coilover Kit (Part No. GSQ30-8UAS2) is a ride-height adjustable suspension upgrade engineered for the Scion tC (2011-2016, AGT20L chassis). Designed as TEIN's entry-level coilover option, this kit delivers a sportier stance, improved handling, and a smoother street ride compared to the stock suspension while maintaining everyday comfort. Its twin-tube damper design and corrosion-resistant ZT-coated adjustment sleeves provide durable performance and dependable ride height tuning.

Ideal for daily drivers looking to lower their tC with confidence, the Street Basis Z coilovers feature fixed damping optimized for comfortable street use. Adjustable spring seats allow for precise ride height setup, and full-length dust boots help protect damper internals from debris. With balanced spring rates and OEM upper mount compatibility, this kit offers a reliable and affordable way to enhance your Scion's handling characteristics and stance.