Fly Products Rider Sprint Thor 303
Fly Products Rider Sprint Thor 303
Fly Products Rider Sprint Thor 303
Please note: the price shown is an estimate. Final pricing is confirmed when you place your order, as it can vary with international shipping costs and currency exchange rates at the time of purchase.
The range-topping Polini Thor 303 for pilots chasing serious thrust and rapid climb rates — the most powerful engine in the Sprint Thor family.
| Cycle | 2-stroke, single cylinder |
| Bore / Stroke | 76 x 62 mm |
| Power | 38 hp at 8,000 rpm |
| Cooling | Liquid-cooled, 18-element radiator |
| Starter | Manual Flash starter |
| Transmission | Helical gear reduction (2.8 ratio up to 140 cm prop, 3.2 above), centrifugal clutch |
| Fuel consumption | 3 litres/h at 4,500 rpm |
| Max thrust | 120 kg with 160 cm propeller |
| Engine weight | ~32 kg |
Includes 2-blade Helix propeller (130 cm or 140 cm, your choice), propeller cover and cage bag.
All our products are Made in Italy — designed, built and assembled by us. Attention to detail is our strength.
Built on the Fly Products Rider platform, mounting to the Foxy mini trike, the tandem-capable Flash Trike and the single-seat Vertigo Trike. Aluminium frame with self-tempering welds, ASC distance bars tested to 1,800 kg each, our lightweight PVC harness (Narrow or Wide), and the “React” throttle with fuel-range mirror. The cage fits single- and double-hoop configurations for 125, 130 and 140 cm propellers.