Racetech RT4100 Racing Seat
The Racetech RT4100 Racing Seat is a lightweight FIA-approved fiberglass racing seat engineered for exceptional driver support, comfort, and fitment flexibility. Designed to accommodate a wide range of drivers and vehicle cockpits, the RT4100 strikes the ideal balance between shoulder containment and compact external dimensions, making it an excellent choice for road racing, endurance racing, time attack, autocross, rally, and HPDE applications.
Derived from Racetech's championship-winning seat technology, the RT4100 incorporates the company's patented back-mount compatibility system, originally developed for the acclaimed 119 and 129 Series seats. This innovative design allows the seat to be attached directly to a roll cage at shoulder level for increased support and reduced seat flex under high-load conditions.
Large harness guides, pronounced thigh support, parallel seat sides, and a removable molded base cushion provide outstanding comfort and adaptability for drivers of varying heights and builds. Breathable Spacer mesh fabric through the torso area improves airflow and comfort during long race sessions.
Available RT4100 Variants
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RT4100 – Standard-size fiberglass racing seat.
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RT4100WT – Wide & Tall version featuring an additional 60mm of height and 40mm of width.
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RT4100HR – Standard-width seat with integrated head restraints.
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RT4100WTHR – Wide & Tall seat with integrated head restraints.
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Mounting Note: RT4100 Series seats utilize Racetech RTB1009M alloy side mounting brackets (sold separately).
Racetech RT4100 Features
- Lightweight fiberglass composite shell construction
- FIA 8855-1999 homologated racing seat
- Patented back-mount compatible design
- Gloss black gel-coat shell finish
- Black fire-retardant fabric upholstery
- Breathable Spacer mesh torso panels for improved airflow
- Large harness openings for proper belt positioning
- Removable molded base cushion
- Pronounced thigh bolsters for enhanced support
- Available in Standard and Wide & Tall configurations
Technical Specifications
- Homologation: FIA 8855-1999
- Shell Material: Fiberglass Composite
- Shell Finish: Gloss Black Gel-Coat
- Upholstery: Fire-Retardant Fabric with Spacer Mesh Inserts
- Minimum Shell Weight: 5.7 kg (12.5 lb)
- Mounting Type: Side Mount / Back-Mount Compatible
- Available Sizes: Standard and Wide & Tall (WT)
Why Choose the Racetech RT4100?
The Racetech RT4100 combines lightweight construction, FIA-certified safety, exceptional driver comfort, and advanced back-mount technology in a versatile package that fits a broad range of vehicles. Whether you're building a dedicated race car or upgrading your track-day machine, the RT4100 delivers the support, durability, and performance Racetech seats are known for worldwide.
