Tein GSB14-9UAS2 Street Advance Z Coilovers 2006-2011 Honda Civic FA/FG 16-Way

Vehicle Fitment

• 2006-2011 Honda Civic Sedan (FA1 - DX, LX, EX, EX-L, GX, Hybrid, Hybrid-L, LX-S; FWD, 1.8L 4-Cylinder; Excludes Si)
• 2006-2011 Honda Civic Sedan Si (FA5 - FWD, 2.0L 4-Cylinder K20Z3)
• 2006-2011 Honda Civic Coupe (FG1 - DX, LX, EX, EX-L; FWD, 1.8L 4-Cylinder; Excludes Si)
• 2006-2011 Honda Civic Coupe Si (FG2 - FWD, 2.0L 4-Cylinder K20Z3)
• 2008 Honda Civic MUGEN Si (FG2-based; FWD, 2.0L 4-Cylinder)

Fitment Notes

• Fits both Coupe (FG1/FG2) and Sedan (FA1/FA5) body styles on the 8th generation Civic platform
• Does NOT fit the Honda Civic Hatchback - this kit is for Coupe and Sedan platforms only
• OEM upper mounts (top hats) must be reused - upper mounts are not included with this kit
• Camber adjustment is not available - OEM geometry is retained at the top mount
• EDFC motor kit compatible - damping force adjustment can be motorized with the optional Tein EDFC system (sold separately)
• Lowering range varies by sub-model - see Specifications section for per-trim drop heights

Features

• 16-way adjustable damping force - allows fine-tuning of ride comfort and handling response across 16 distinct compression/rebound settings
• Thread-type ride height adjustment via lower spring seat - simple, direct height setting without tool complexity
• Twin-tube damper construction delivers longer stroke with lower repulsive force compared to mono-tube designs for superior daily-driver ride comfort even at lowered heights
• Fully sealed crimped damper structure - top of shell pipe is narrowed, oil and gas injected, and unit sealed by metal crimping for a more compact, cost-effective, and durable build
• ZT-coated threaded sleeve resists corrosion and allows smooth, consistent collar adjustment throughout the product life
• SAE9254 cold-formed springs with minimum tensile strength of 200 kgf/mm² - sag-proof, extremely resilient, and suitable for all driving conditions
• Powder-coated spring finish is durable, chip-resistant, and corrosion-resistant
• Higher spring rates than the Street Basis Z - engineered for more spirited driving and light track use alongside daily street use
• EDFC-compatible motor attachment points allow optional motorized damping adjustment without additional modification
• Manufactured in Japan to strict Tein quality control standards

Specifications

• Part Number: GSB14-9UAS2
• UPC: 4582202761768
• Product Line: Street Advance Z (SAZ)
• Part Type: Coilover Damper Kit (Full Set - Front and Rear)
• Vehicle Platforms: Honda Civic FA1, FA5, FG1, FG2 (8th Generation, 2006-2011)
• Damper Type: Twin-Tube
• Damping Adjustment: 16-Way (Adjustable)
• EDFC Compatible: Yes
• Height Adjustment: Thread-Type (Lower Spring Seat)
• Lowering Range - FA1 (Civic Sedan 1.8L, Non-Si): Front 0.1 in.-2.2 in. / Rear 0.2 in.-1.7 in.
• Lowering Range - FA5 (Civic Sedan Si): Front 0.9 in.-3.0 in. / Rear 0.4 in.-1.9 in.
• Lowering Range - FG1 (Civic Coupe 1.8L, Non-Si): Front 0.1 in.-2.2 in. / Rear 0.2 in.-1.7 in.
• Lowering Range - FG2 (Civic Coupe Si): Front 0.9 in.-3.0 in. / Rear 0.4 in.-1.9 in.
• Spring Rate (Front): 6.0 kgf/mm (336 lb/in)
• Spring Rate (Rear): 7.0 kgf/mm (392 lb/in)
• Spring Material: SAE9254 Cold-Formed Steel (Min. 200 kgf/mm² Tensile Strength)
• Spring Finish: Powder Coated
• Sleeve Coating: ZT (Corrosion Resistant)
• Upper Mounts: OEM Reuse Required (Not Included)
• Position: Front and Rear (Full Kit - 4 Dampers)
• Drivetrain: FWD
• Quantity: 4 (Complete Set)
• Country of Manufacture: Japan
• Warranty: 1-Year Limited (through authorized Tein dealers)

Included Components

• 2x Front Coilover Assemblies (Left and Right)
• 2x Rear Coilover Assemblies (Left and Right)
• 1x Set of Adjustment Wrenches
• 1x Installation Hardware

Product Description

The Tein Street Advance Z (Part #GSB14-9UAS2) is a step-up coilover system for the 2006-2011 Honda Civic Coupe and Sedan (platforms FA1, FA5, FG1, FG2), bridging the gap between the entry-level Street Basis Z and Tein's fully adjustable Flex Z lineup. The defining upgrade over the Street Basis Z is the 16-way adjustable damping force - a feature that gives drivers direct control over compression and rebound characteristics across 16 distinct settings. This makes the Street Advance Z equally capable as a comfortable daily driver set soft, or a more aggressive canyon and track-day weapon when stiffened to its upper range. The stiffer spring rates - 6.0 kgf/mm (336 lb/in) front and 7.0 kgf/mm (392 lb/in) rear - reflect its more performance-oriented tuning compared to the Street Basis Z, and are matched to the 16-way damper valving by Tein engineers for a balanced, predictable setup out of the box.

The Street Advance Z uses the same proven fully sealed twin-tube damper construction shared across Tein's Street Z lineup. The crimped, sealed damper structure provides a compact build profile that maintains adequate shock travel even at lowered ride heights, while the twin-tube architecture delivers longer effective stroke and lower initial resistance than a mono-tube design - making the car more compliant over road imperfections at lower settings and more stable and controlled at higher damper settings. Ride height is adjusted via a threaded lower collar and ZT-coated sleeve, and the kit is EDFC-compatible, meaning the optional Tein EDFC motor kit can be added later to enable motorized in-cabin damping adjustment without requiring any additional modification to the coilover body.

This kit fits all non-hybrid and hybrid variants of the 8th generation Civic Coupe and Sedan across both engine sizes - the 1.8L R18A base and the 2.0L K20Z3 Si. Lowering ranges differ between sub-models: Si variants (FA5/FG2) offer a wider drop range of 0.9"-3.0" front and 0.4"-1.9" rear, while non-Si variants (FA1/FG1) range from 0.1"-2.2" front and 0.2"-1.7" rear. OEM upper mounts must be reused as they are not included. Manufactured in Japan to Tein's strict quality standards and backed by a 1-year limited warranty through authorized Tein dealers, the Street Advance Z GSB14-9UAS2 is the ideal coilover choice for 8th gen Civic owners who want real damper adjustability alongside quality height control at an accessible price point.