BRIDE STRADIA III KING Reclining Bucket Seat

The BRIDE STRADIA III KING is a collaboration model developed with Keiichi Tsuchiya, the former racing driver known worldwide as the Drift King. Built on the same engineering platform as the STRADIA III, it is the new flagship reclining seat from BRIDE, combining the holding performance required for circuit and sports driving with the everyday convenience and comfort the STRADIA series has always been associated with. The KING designation adds a layer of character unique to this model, with gold embroidery accents featuring the Keiichi Tsuchiya logo, his nickname “KING,” and the word “Craftsman” embroidered on the backrest and headrest.

The STRADIA Series

• A New Frame & Shell Designed Using 3D-CAD: The newly developed bone frame and monocoque body shell, inspired by the ZETA IV, are precisely shaped to enhance shoulder support and holding performance. This redesign results in a frame load capacity increase of 200%, a 40% boost in torsional strength, and a 15% improvement in backrest frontal collision strength compared to the STRADIA II.
• A Newly Developed Stepped Reclining Mechanism: The reclining mechanism has been compactly redesigned, enhancing precision and strength. Typical issues like backlash and looseness found in traditional stepped mechanisms are minimized, providing reliable holding and increased comfort.
• A One-Touch Reclining Lever with Excellent Functionality: STRADIA III replaces the backrest angle adjustment dial with a one-touch reclining lever, enhancing user convenience, durability, and space efficiency within the vehicle.
• Utilizing the LOWMAX System Which Enables the Maximum Low Driving Position: BRIDE’s patented LOWMAX System technology in the STRADIA series allows for an exceptionally low seating position, even within tight spaces. This system facilitates perfect alignment between the steering wheel and seat centers, eliminating offset and providing maximum comfort and control.

The STRADIA III KING

• This collaboration model with Drift King Keiichi Tsuchiya is BRIDE’s new flagship reclining seat, combining exceptional hold performance with convenience.
  • Accented with Gold Embroidery: The KING series is a uniquely designed seat, featuring Keiichi Tsuchiya’s logo, along with his nickname “KING” and the word “Craftsman” embroidered on the backrest and headrest, paying homage to this legendary drift expert.
  • Semi-Bucket Seat Suitable for Sports Driving: Equipped with large belt holes compatible with FHR systems like HANS, as well as additional belt holes for 6-point harnesses, the seat also incorporates specially designed high-density mold urethane foam. This semi-bucket seat offers outstanding support, making it ideal for a variety of driving environments, from street use to performance driving.

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)
• Standard cushions
• Made in Japan
• Safety standard compliant model

Specifications

• Series: STRADIA
• Base Model: STRADIA III
• Colors:
  • Black & green / Gradation
  • Red
• Shell:
  • FRP silver shell
  • Carbon shell
• Width: 445mm (555mm at shoulder pads)
• Height: 860mm
• Depth: 710mm
• Weight: Approximately 14kg (30.9lbs)

Compatible Seat Rails

• LR
• RB
• RK
• RO

Notes

• Vehicle-specific seat rails (sold separately) are required for installation

Frequently Asked Questions

• Who is Keiichi Tsuchiya and what is his connection to the STRADIA III KING? Keiichi Tsuchiya is a former professional racing driver widely known as the Drift King, a title that reflects his pioneering role in popularizing drifting as a motorsport discipline. The STRADIA III KING is a collaboration model featuring his personal logo and signature nicknames, “KING” and “Craftsman,” embroidered in gold on the backrest and headrest. It is a limited character edition of the STRADIA III built around his identity and motorsport legacy.
• What is the difference between the STRADIA III KING and the standard STRADIA III? The STRADIA III KING and the standard STRADIA III share the same engineering platform; the 3D-CAD designed monocoque shell, bone frame, one-touch reclining mechanism, high-density urethane foam cushions, and harness compatibility features are all consistent across the STRADIA III range. The KING is a collaboration variant that adds gold embroidery accents with the Keiichi Tsuchiya logo, “KING,” and “Craftsman” on the backrest and headrest, giving the seat a distinct character that sets it apart visually from other STRADIA III variants.
• How much stronger is the STRADIA III frame compared to the STRADIA II? The STRADIA III’s newly designed bone frame and monocoque shell dramatically improve seat rigidity and strength compared to the STRADIA II. The 3D-CAD development process and the design inheritance from the ZETA IV shell allow for greater shoulder support geometry and a stiffer overall structure, contributing to improved hold performance under lateral load.
• Does the STRADIA III KING support FHR systems and 6-point harnesses? Yes. The STRADIA III KING includes large-diameter belt holes compatible with FHR systems such as HANS, as well as a newly added 6-point harness belt hole at the bottom of the seat. These features support drivers competing in circuit racing and other motorsport activities where advanced restraint systems are required alongside or instead of a standard seatbelt.
• How does the one-touch reclining lever work? The one-touch reclining lever allows the seatback angle to be adjusted across multiple stepped positions with a single lever operation, eliminating the previous adjustment dial. The redesigned mechanism minimizes backlash and wobbling throughout the adjustment range, meaning the seat holds its set position firmly once locked. The lever design also improves space efficiency inside the vehicle cabin compared to the previous adjustment system.
• Is the STRADIA III KING suitable for daily driving as well as track use? Yes. The STRADIA III KING is designed as a semi-bucket seat that combines the holding performance needed for sports driving and circuit use with the everyday convenience of a reclining mechanism and easy entry and exit. The high-density mold urethane foam, one-touch lever, and LOWMAX System positioning make it a practical seat for regular road use, while the FHR and 6-point harness compatibility extend its capability for drivers who also use the car on track.

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.