Racetech RT4119W Wide Race Seat - FIA 8855-1999 Approved
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Details
Details
The Racetech RT4119W is the "Wide" version of the popular 119 series. It's engineered for drivers needing extra hip / torso width without compromising the performance characteristics of the 119 line.
Note: According to Racetech, the RT4119W (without head restraints) **is not FIA homologated**.
Specifications
| Designation | RT4119W (Wide variant, "chopped" – no head restraint) |
|---|---|
| FIA Homologation | None (not FIA approved) |
| Shell Construction | Fiberglass composite (GRP) shell |
| Shell Weight (typical) | ~ 7.0 kg (≈ 15.4 lb) |
| Seat Cover / Upholstery | Black fire-retardant fabric (wear patches in high-stress zones) |
| Sizes / Variants | W (Wide) and WT (Wide & Tall) |
| Side Mount Hole Centres | 295 mm (standard RT / 119 pattern) |
| Back Mount Hole Centres | 250 mm (shoulder level compatibility) |
| Bolt Torque (recommended) | 30 Nm / 22 ft-lb |
| Harness Compatibility | 4-, 5- or 6-point harness systems |
| Air Ducting / Cooling | No air duct spigot included (unlike some 119 HR models) |
Key Features
- Extra width in the shell to accommodate larger hip / torso dimensions without altering seat length
- Back-mount capable design allows attachment to roll cage shoulder supports for better load distribution
- Large harness slots ensure compatibility with modern wide-belt systems without interference
- Removable base / back cushions allow drivers to fine-tune fit and comfort
- Flush mounting bosses simplify hardware installation and alignment
Mounting & Installation
Mounting & installation recommendations:
- Use certified side-mount brackets matching 295 mm spacing (e.g., Racetech RTB1009M or RTB2009S)
- For back-mount, align to 250 mm shoulder spacing and bolt firmly to roll cage or cross-member
- Torque seat mounting bolts to ~ 30 Nm / 22 ft-lb using zinc or high-strength hardware
- Ensure harness belts route cleanly through slots without contact with shell edges or hardware
- Check for clearance between seat shell and cage tubes, wiring, trim, etc., before final tightening
- After initial use or break-in period, re-check and confirm torque of all mounting bolts
Usage & Certification Notes
While the RT4119W is based on Racetech's 119 series, the "W" variant **without head restraint** is explicitly listed by Racetech as **not FIA homologated**.
Because of this, it is unsuitable for classes or sanctioning bodies that require a valid FIA-approved seat. It is, however, well suited for track-day, autocross, club, or other non-FIA regulated motorsports where you want a wider fit without head wings.
Always verify your series or sanctioning body's rules before installation and use.