* To comply with FIA 8862-2009, the 129 series seats must be back-mounted to the rollcage at shoulder level.
Back-mounting can be achieved in a variety of ways, but for some basic guidelines, see instructions here.
Back-mounting improves seat strength and stability during an impact, increases driver 'feel' and reduces driver fatigue, see the explanatory video here.
| Model | Material | FIA 8862 | A | B | C | D | E | F | G | Mount Width | Shell Weight | Total Weight |
|---|
| RT4129HRW | Fibreglass/
Kevlar/
Carbon | Yes | 62 | 58 | 37 | 46 | 47 | 92 | 62 | 40 | 13.4 | 14.9 |
| RT4129WHR | Fibreglass/
Kevlar/
Carbon | Yes | 67 | 58 | 41 | 50 | 47 | 92 | 62 | 44 | 13.5 | 15.0 |
| RT4129WTHR | Fibreglass/
Kevlar/
Carbon | Yes | 68 | 64 | 41 | 50 | 47 | 98 | 68 | 44 | 15.4 | 17.9 |
| | | | | | dimensions in cm | | weights in kg |
| Application |
| Common Applications | International-level circuit racing where extreme strength and FIA 8862 homologation is important |
| Stock Color / Material |
| Gel-coat | Gloss black |
| Seat Cover | Black fire-retardant fabric |
| Wear Patches | Grey suede leather |
| Technical |
| FIA Homologation | Complies with the latest FIA 8862-2009 regulations |
| Shell Construction | Composite |
| Shell Weight | From 13.4kg |
| Sizes | HRW - Standard
WTHR - Wide & Tall |
| Design |
| Head Restraint | Integrated head restraint |
| HANS Compatible | Yes |
| Harness Compatibility | Up to 6-point harness |
| Large Harness Guides | Yes |
| Air Ducting | Yes - vented to the driver's lower back |
| Back-mount Compatible | Yes - back mounting required for FIA homologation |
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