TEIN GSMA8-91AS3 Street Advance Z Coilovers for 2014-2024 Mazda 3 BMEFS

Vehicle Fitment

• 2014-2024 Mazda 3 (BMEFS chassis, FWD, 2.0L)

Features

• TEIN Street Advance Z adjustable coilover suspension
• Twin-tube damper construction for balanced comfort and control
• 16-stage damping force adjustment for tuning ride feel
• ZT-coated threaded sleeve for corrosion-resistant ride height adjustment
• Powder-coated damper bodies for enhanced durability
• Full-length dust boots to protect pistons from debris
• Compatible with TEIN EDFC electronic damping controllers
• Delrin washer and aluminum spring seats for smooth adjustment

Specifications

• Part Number: GSMA8-91AS3
• Front Spring Rate: 5.0 kgf/mm (≈280 lbs/in)
• Rear Spring Rate: 5.0 kgf/mm (≈280 lbs/in)
• Damping Adjustment: 16-way (front & rear)
• Ride Height Adjustable: via threaded spring seats (ZT coating)
• Upper Mounts: Uses OEM upper mounts
• EDFC Compatibility: Yes (controller sold separately)
• Recommended Ride Height Drop: approx -0.6 to -2.2 in front, -1.6 to -3.0 in rear

Included Components

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

Product Description

The TEIN Street Advance Z Coilover Kit (Part No. GSMA8-91AS3) is a performance suspension upgrade designed specifically for Mazda 3 models with the BMEFS chassis from 2014 through 2024. This complete coilover system provides adjustable ride height and damping force, allowing enthusiasts to dial in a more aggressive stance and refined handling without sacrificing daily drivability. The 16-stage damping adjustment lets you customize firmness for street use, spirited driving, or light track work.

Built with TEIN's advanced twin-tube design, powder-coated dampers, and ZT-coated threaded sleeves, the Street Advance Z kit offers durability against corrosion and long service life. OEM upper mounts are retained, and the kit is compatible with TEIN's optional EDFC electronic damping force controller for in-car adjustment. Whether you're lowering your Mazda 3 for performance or aesthetics, this coilover set delivers improved body control, reduced body roll, and enhanced confidence behind the wheel.