* 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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