Racetech RT4119 Series Racing Seat

RT4119HR Series

The Racetech RT4119HR is our best-selling fiberglass motorsport seat, combining professional-level ergonomics, advanced driver containment, and lightweight composite construction for an exceptional range of racing disciplines. From drag racing and drifting to endurance racing, rally, and track days, it delivers the comfort, support, and protection trusted by racers worldwide.

Hand-built in New Zealand, the RT4119HR features a lightweight fiberglass composite shell engineered to manage crash energy while maintaining outstanding structural integrity. Its proven 119 Series geometry reduces driver fatigue, improves chassis feedback, and keeps the driver securely positioned throughout every lap or pass.

Key Features

• FIA 8855-1999 homologated
• Lightweight hand-laid fiberglass (GRP) composite shell
• Proven 119 Series ergonomics
• Integrated head restraints
• Integrated structural back mount
• Rear ducted air cooling compatible
• FHR compatible
• Compatible with 4-, 5-, and 6-point harnesses
• Available in Standard, Tall, Wide, and Wide/Tall sizes
• Modular cushions available to further personalise driver fit
• Hand-built in New Zealand

Why Choose the RT4119HR?

Biomechanically Engineered Support

Ergonomic shell design, integrated head restraints, and Racetech's signature square shoulders improve driver stability while maintaining ideal harness and HANS® positioning.

Lightweight Composite Construction

The hand-laid fiberglass shell provides an outstanding balance of strength, durability, and weight while managing crash energy through carefully engineered shell compliance.

Modular Driver Fit

Interchangeable additional cushions allow drivers to fine-tune seating position and harness alignment for improved comfort, steering precision, and restraint performance.

Integrated Back Mount Capable*

With our unique integrated back mounting system, the seat becomes part of the vehicle structure, increasing installation rigidity, improving chassis communication, and satisfying FIA 8855-1999 mounting requirements.

Ducted Air Cooling Capable

Scientifically, the most efficient way to cool the body is through air circulation to the lower back. The integrated rear air duct allows easy connection to our blower motor or another air source, helping reduce heat stress during endurance races and high-temperature competition.

Dimensions and Weights:

[[SEAT-TABLE]]

Brackets and Mounting:

- Side mount to the floor using Racetech RTB1009M 5mm aluminum or RTB2009S 3mm steel brackets (please select from above when ordering).

- Back mount using a RTB3115B or RTB2115B in conjunction with RTB2005C. The RTB2115B is a 5mm aluminum bracket that bolts directly to the shoulder beam of the seat. The RTB2005C clamps bolt to the RTB2115B (once holes have been drilled) and come in 3 variants; either a 1¹/₂ (38mm), 1⁵/₈ (41mm) or 1³/₄ (45mm) ID to suit the rollcage tube diameter in your vehicle. Please select your preferred clamp diameter above when ordering. 

* To comply with FIA 8855-1999, the 119 series seats (except the RT4119HRW) must be back-mounted to the rollcage at shoulder level. Back-mounting can be achieved using parts RTB3115, RTB2115B and RTB2005C, see instructions here. Back-mounting improves seat strength and stability during an impact, increases driver 'feel' and reduces driver fatigue, see the video here.

Product images are provided for illustrative purposes only. Due to the handcrafted nature of our products, embroidery patterns, placement, colors, and other details may vary slightly from the item shown. These variations are a natural part of the manufacturing process and do not constitute a defect. If you have any questions before placing your order, please contact us.