Polini racing kit with 47 mm diameter and approx. 75 cc displacement for your Piaggio Ciao, Si, Bravo and Grillo moped / moped with corresponding Polini EVO REED engine housing.
The generously dimensioned, symmetrical overflow ducts and the open boost ports ensure maximum power delivery. The exhaust is attached via a 4-fold bolted exhaust flange plate. Two different sleeves are included in the scope of delivery, which are suitable for exhaust pipes with connection diameters of 22 mm or 27 mm.
The cast iron tuning cylinder is equipped with four stud bolts and an exhaust with two secondary exhaust ports. In combination with the newly developed cylinder head and a piston with two piston rings, impressive compression and power are generated.
| Nominal diameter | 47 mm |
| Manufacturer | Polini |
| Material | Gray cast iron |
| Camouflaged | No |
| Displacement | 75 ccm |
| Crankshaft stroke | 43 mm |
| Ø cylinder neck | 49.8 mm |
| Ø Outlet outside | 22 mm, 27 mm |
| Number of fixing points | 4 pcs |
| Ø piston pin (B) | 12 mm |
| Decompressor | Yes |
| Hole pattern [mm] | 43 x 52 |
| Hole spacing outlet | 23 mm, 38 mm |
| Thread outlet | M5x0.8 (standard thread) |
| Area of application | Tuning, High End |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Grillo |
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