Bride Japan Zeta IV Gradation Logo - Silver FRP Sparkle Back - Standard Cushion - Low Max
or as low as $116.67/mo with Affirm
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Flagship Full Bucket · Since 1990
ZETA IV — Gradation LogoBRIDE’s flagship full bucket — the standard model since 1990
ZETA IV is the latest iteration of the ZETA series — BRIDE’s standard full bucket seat that has won races since launch in 1990 and kept drivers safe across road, circuit, and competition. The shell is designed to fit the body shape; this is the BRIDE flagship built for everything from street driving to hard sports.
BRIDE’s flagship full bucket — the standard model since 1990
ZETA IV is the latest iteration of the ZETA series — BRIDE’s standard full bucket seat that has won races since launch in 1990 and kept drivers safe across road, circuit, and competition. The shell is designed to fit the body shape; this is the BRIDE flagship built for everything from street driving to hard sports.
Built on BRIDE’s seat manufacturing technology and experience over decades, ZETA IV achieves light weight and high rigidity through high-performance materials in each part. Superior to conventional buckets across holdability, comfort, durability, and safety.
The shell material is selectable from two types — Silver FRP shell and Super Aramid Carbon shell — and the color variation from three: Black, Red, Gradation Logo. Every ZETA IV is a FIA 8855-1999 approved model.
Evolved through BRIDE technology & experience
ZETA IV evolved into a racing-sport seat usable for long sessions across a wider range of vehicle types and categories — installed LOWMAX system (originally only on select seats), large belt holes, durable PVC leather, and shell-shape refinements that wrap the body.
FIA-Approved — Conformity to the safety standard
ZETA IV conforms to the Japanese Road Transport Vehicle Act (automobile inspection) and has acquired FIA 8855-1999 from the International Automobile Federation — allowed for use in international formality races and competitions. Design and quality pass the most severe FIA homologation tests.
Dimensions: Round-shoulder shell · LOWMAX low-position posture · large belt holes · PVC leather side panels
Silver FRP or Super Aramid Carbon Shell
Product Lineup
All six ZETA IV standard configurations from BRIDE’s spec sheet. Each Color × Shell pair is its own SKU. Special editions (Drift King, Reims, Verio, ZetaGhost) have their own product pages. Your current selection: HA1GSF is highlighted below.
| Shell Material | Color | Product No. | Cushion | Weight | Cover | FIA |
|---|---|---|---|---|---|---|
| Silver FRP | Black | HA1ASF | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
| Super Aramid Carbon | Black | HA1ASC | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
| Silver FRP | Red | HA1BSF | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
| Super Aramid Carbon | Red | HA1BSC | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
| Silver FRP | Gradation Logo | HA1GSF | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
| Super Aramid Carbon | Gradation Logo | HA1GSC | Standard | 7.4 kg | Flame-retardant fabric | ✔ |
Specifications
- Type
- Full bucket racing seat (fixed)
- Series
- ZETA IV · BRIDE’s flagship full bucket since 1990
- This SKU
- HA1GSF · Gradation Logo · Silver FRP
- Cushion
- Standard cushion
- Cover
- Flame-retardant fabric (PVC leather sides)
- Weight
- 7.4 kg
- Shell Options
- Silver FRP Shell · Super Aramid Carbon Shell
- Colors
- Black · Red · Gradation Logo
- FIA Approval
- Yes — FIA-compliant (all configurations)
- Head Protection
- Round-shoulder shape · LOWMAX low-position posture
- Seatback
- PVC leather side panels · durable wear surfaces
- Belt Holes
- Large belt holes · FHR (HANS) compatible
- Origin
- Made in Japan · BRIDE Inc.
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