Ready to win
The SIGMA RS3 has been developped especially for medium tyres in Rotax, X30 and OK, where the longer wheelbase and welded column support will ensure more effectiveness.
Equipped with a new frame - tubes Ø30 - and its new aluminium floor tray, the Sigma RS3 2025 is a exceptional and easy chassis for winning under all track conditions.
New evolutions :
- Modification of tubes quality on OK/OKJ frame.
- Hard stub axles are replaced by a softer model
- Steering tie rods change from 266 to 276mm.
- Cetrnal bearing cage (PC0274.054) with its support (PC0275.067) are suppressed.
Karts are now mounted with two bearing cages only. - Ø80mm rear wheel hubs are now mounted as original equipment.
- Front flat stabiliser is modified as original equipment.
Dimensions & Weight
| Wheelbase | 1050 mm |
| Frame | double tube removable - CIK |
| Tube | ø 30mm |
| Rear Axle | Hollow steel ø 50mm - 3 bearings |
| Axle bearing support | Anodized, bearing ø 80mm |
| Stub axles | ø 25mm "Hard" |
| Rear hubs | Anodised, fully machined, L. 90mm |
| Brake | 4-pistons hydraulic brake system - CIK |
| Brake disk | Floating and turbo ventilated disk |
| Front wheels | Magnesium low volume, 130mm |
| Rear wheels | Magnesium low volume, 212mm |
| Tank | Removable 8 Liters |
| Seat | Tekneex Racing Polyester |
| Steering wheel | Aluminium alcantara covering Sodi |
| Safety | Protective base plate for break disk, brake pedal with 2 points attachment, integral chain cover, anti-locking bar |
| Frame colour | Black + varnish |
| Bodywork | KG Sodi CIK approved |
| Rear bumper | KG plastic |