Tein GSF12-8UAS2 Street Basis Z Coilovers for 2010-2016 Hyundai Genesis Coupe

Vehicle Fitment

• 2010-2016 Hyundai Genesis Coupe (BK14, RWD, 2.0L Turbo I4)
• 2010-2016 Hyundai Genesis Coupe (BK14, RWD, 3.8L V6)

Features

• TEIN Street Basis Z twin-tube coilover suspension system
• Thread-type ride height adjustment for customizable stance
• Designed to reuse OEM upper mounts for simplified installation
• Durable steel construction with corrosion-resistant coating
• Twin-tube damper design provides smooth ride comfort and long stroke
• Sag-resistant springs manufactured from high-strength steel
• Dust boot protection to prevent debris from damaging piston rods
• Balanced performance for daily driving and sporty handling

Specifications

• Part Number: GSF12-8UAS2
• Product Type: Coilover Suspension Kit
• Chassis Code: BK14
• Drivetrain: RWD
• Front Spring Rate: 6 kg/mm (336 lb/in)
• Rear Spring Rate: 6 kg/mm (336 lb/in)
• Front Ride Height Range: -0.4 in to -2.6 in (-10 mm to -67 mm)
• Rear Ride Height Range: -0.6 in to -2.5 in (-15 mm to -68 mm)
• Damping Adjustment: Non-adjustable
• Upper Mounts: OEM mounts reused (not included)
• EDFC Compatible: No

Included Components

• 2x Front TEIN coilover shock assemblies
• 2x Rear TEIN coilover shock assemblies
• 4x Coilover springs
• 4x Rubber bump stops
• 4x Delrin thrust washers
• 1x Installation instruction manual
• 1x TEIN sticker sheet

Product Description

The TEIN Street Basis Z Coilover Kit (GSF12-8UAS2) is engineered to provide an affordable performance suspension upgrade for the 2010-2016 Hyundai Genesis Coupe (BK14 chassis). Designed for both the 2.0L turbocharged I4 and 3.8L V6 rear-wheel-drive models, this system combines improved handling with a comfortable ride for daily-driven sports coupes. The twin-tube damper design offers longer stroke and smoother compression compared to many mono-tube systems, allowing the vehicle to maintain stability on uneven roads while improving cornering performance.

Ride height is adjustable using a threaded spring seat system, allowing drivers to dial in a more aggressive stance while maintaining usable suspension travel. Typical lowering varies by engine configuration: approximately 1.4 in front and 0.8 in rear on 2.0T models, and around 1.0 in front and rear on 3.8 models, with a total adjustable range up to about 2.6 in of drop depending on setup. The kit reuses factory upper mounts for straightforward installation. For 2011-2016 models, the OEM front sway bar link rod from the 2010 Genesis Coupe (or a compatible TEIN link) is required for proper sway bar installation. This coilover system is ideal for drivers seeking improved handling, adjustable ride height, and reliable TEIN suspension quality at an accessible price point.