BRIDE ZETA IV REIMS Bucket Seat

The BRIDE ZETA IV REIMS is the premium upholstery variant of the ZETA IV, BRIDE’s top-selling full bucket seat since 1990 and the standard model in the brand’s full bucket lineup. Designed around the human skeletal structure and body shape, the ZETA series has long been recognized within BRIDE as the “racing comfort” model; a seat that prioritizes safety and holding performance across everyday road use, circuit driving, and motorsport applications without sacrificing comfort over extended periods. The REIMS adds full coverage in premium suede-like fabric extending to the back of the seat, accent color lines on the backrest, shoulders, stitching, and back surfaces, and a more aggressive, sporty aesthetic that sits above the standard ZETA IV in finish quality while sharing its core engineering.

The ZETA Series

• Advanced Material & Manufacturing Method: By incorporating high-performance materials into the FRP shells (utilizing glass and aramid fibers), BRIDE has enhanced the shell rigidity by 15%. The seat cushion and thigh cushion, areas in close contact with the body, now feature molded urethane, which improves both comfort and durability, especially for extended driving periods.
• Shell Design & Holding Performance with Safety in Mind: The new shell shape and vertical slits in the back cushion provide improved fit from the headrest down through the back and shoulders, allowing drivers to maintain an optimal driving position comfortably over extended periods. The raised thigh design prevents the “submarine phenomenon,” where the occupant may slide forward during hard braking or collisions.
• LOWMAX System in the ZETA Series: The ZETA series incorporates the LOWMAX system, reducing shoulder width to 560mm and achieving a “seat center = handle center” alignment, which was previously challenging with standard designs. This allows compatibility with a broader range of vehicle types.

The ZETA IV REIMS

• ZETA IV REIMS, a sporty model in BRIDE’s standard full bucket seat lineup, features accent color lines. Based on the ZETA IV, this seat is designed for a wide range of driving scenarios, from everyday road use to intense sports driving, and is covered with a premium suede-like fabric extending to the back of the seat. It offers a sporty, stylish look with accent color lines on areas like the backrest, shoulders, stitching, and back. While maintaining the lightweight, high-rigidity core features of the ZETA IV—such as exceptional hold, comfort, durability, and safety—the design emphasizes a more aggressive and sporty aesthetic.
  • Full-Covered Design with Attention to Detail: The ZETA IV REIMS has a clean and polished look, with full coverage extending down to the metal stay of the seat rail. A Velcro-openable slit allows compatibility with long-stay seat rails (such as LF types).

Features

• Provides a higher-grade texture with full coverage in high-quality suede-like fabric that feels good against the skin
• A confident product that combines comfort and a hugging hold
• Flame-retardant fabric (high-quality suede-like fabric, PVC leather)
• Made in Japan
• Safety standard compliant model

Specifications

• Series: ZETA
• Base Model: ZETA IV
• Colors:
  • Black & black
  • Black & blue
  • Black & red
• Shell: FRP silver shell
• Width: 460mm (560mm at shoulder pads)
• Height: 890mm
• Depth: 710mm
• Weight: Approximately 7.8kg (17.2lbs)

Compatible Seat Rails

• FB
• FG
• FK
• FO
• FT
• FX
• IG
• LF

Notes

• ZETA Ⅳ REIMS is not an FIA certified model
• Vehicle-specific seat rails (sold separately) are required for installation

Frequently Asked Questions

• Is the BRIDE ZETA IV REIMS FIA certified? No. The ZETA IV REIMS is explicitly not an FIA certified model. Buyers who require FIA certification for use in sanctioned competition should consider other seats within the BRIDE lineup, such as the XERO series, which includes FIA-certified options.
• What is the difference between the ZETA IV REIMS and the standard ZETA IV? The ZETA IV REIMS is a premium upholstery variant of the ZETA IV. The core engineering, shell construction, LOWMAX System, molded urethane cushions, and safety geometry are shared with the standard ZETA IV. The REIMS adds full coverage in high-quality suede-like fabric extending to the seat rail stay, accent color lines on the backrest, shoulders, stitching, and back, and a more aggressive and sporty aesthetic. It is the higher-finish version of the same seat rather than a separate engineering platform.
• What is the submarine phenomenon and how does the ZETA IV address it? The submarine phenomenon refers to the occupant sliding forward under the lap belt during hard braking or a frontal collision, which can result in the belt riding up over the abdomen rather than restraining across the pelvis. The ZETA IV addresses this through a raised thigh design that keeps the thighs supported and the pelvis in the correct seated position, reducing the risk of forward submarining under impact or hard deceleration.
• What is the LOWMAX System and how does it affect seat positioning in the ZETA IV REIMS? The LOWMAX System is a BRIDE-patented technology that reduces the shoulder width of the seat to 560mm and achieves alignment between the seat center and the steering wheel center, which standard bucket seat designs often cannot provide due to their wider shoulder dimensions. In the ZETA IV REIMS, this alignment ensures the driver sits correctly in relation to the steering wheel and controls, and the reduced shoulder width extends compatibility to a broader range of vehicle types including those with tighter interior dimensions.
• What seat rails are compatible with the ZETA IV REIMS? The ZETA IV REIMS is compatible with FB, FG, FK, FO, FT, FX, IG, and LF type seat rails. All compatible rails are sold separately and vehicle-specific rails are required for installation. The seat includes a Velcro-openable slit to accommodate long-stay rail types such as the LF type while maintaining the full-cover fabric appearance.
• Why does the ZETA IV REIMS use glass and aramid fiber in its FRP shell? Standard FRP construction uses glass fiber alone. By incorporating aramid fiber alongside glass fiber in the FRP shell, BRIDE achieves a 15% increase in shell rigidity over a glass-only equivalent without a proportional increase in weight. Aramid fiber is the same material used in aerospace and ballistic protection applications, valued for its high strength-to-weight ratio. The result is a lighter, stiffer shell that provides better support and protection than standard FRP construction.
• What color options are available for the ZETA IV REIMS? The ZETA IV REIMS is available in three color combinations; black and black, black and blue, and black and red; all on an FRP silver shell. The accent color lines appear on the backrest, shoulders, stitching, and back of the seat and vary by color combination.

About BRIDE

BRIDE is a Japan-based manufacturer specializing in seats and rail components designed to sit closest to the driver, offering maximum protection in a collision. Their ASEA-accredited products meet full vehicle inspection standards and pass six rigorous safety tests covering seat back impact, head restraint performance, seat and belt mounting, and flame resistance. BRIDE is also the first Japanese company to receive FIA endorsement for its seats, with nine models approved for international competition. Every seat is built by hand in Japan using precision-engineered shells and technical fabrics, with all components sourced domestically to keep quality tightly controlled from start to finish. For BRIDE, “Made in Japan” reflects a long-held standard built on ingenuity, meticulous craftsmanship, and technical knowledge; qualities that make their seats a trusted choice in the demanding environment of motorsport.