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, it generates impressive compression and power.
The scope of delivery includes all necessary parts such as gaskets, piston pins and exhaust ports. The decompressor is not included in the scope of delivery.
Note: Long-threaded spark plugs are required.
You can find other parts from the Polini EVOLUTION series in the accessories section.
Quality product from the Italian manufacturer Polini.
| Material | Gray cast iron |
| Nominal diameter | 47 mm |
| Manufacturer | Polini |
| Number of fixing points | 4 pcs |
| Camouflaged | No |
| Displacement | 75 ccm |
| Crankshaft stroke | 43 mm |
| Ø cylinder neck | 49.8 mm |
| Ø Outlet outside | 22 mm, 27 mm |
| Area of application | Tuning, High End |
| Ø piston pin (B) | 12 mm |
| Hole spacing outlet | 23 mm, 38 mm |
| Thread outlet | M5x0.8 (standard thread) |
| Hole pattern [mm] | 43 x 52 |
| Decompressor | Yes |
| Piaggio | Ciao - P, SC, PX, C24 Si Bravo / Super Bravo Grillo |
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Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
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Polini CP 21 mm carburetor & air filter (hand choke) | Piaggio Ciao, SI, Bravo, Boxer
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Polini piston 47 mm EVO cylinder (12 mm KoBo) | Piaggio Ciao, SI, Bravo, Boxer, Grillo
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Material: Steel · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · Manufacturer: Polini · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Ø coupling pin / vario pin: 12 mm · Connecting rod length center-center: 87 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · Total length crankpin ignition side: 91.5 mm · Total length crankpin ignition side: 105 mm · Ø crank webs: 70 mm · Ø piston pin (B): 12 mm · Thread type: MF10x1.25 (fine pitch thread) · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø Bearing seat (ignition side): 15 mm · Thread length: 14 mm · Wide crank webs: 32.6 mm · Length 1st paragraph: 21 mm · Length 2nd paragraph: 44.7 mm · Length 3rd paragraph: 64 mm · Ø 1st step (on the coupling side): 15 mm · Ø 2nd shoulder (on the clutch side): 14.4 mm · Ø 3rd step (on the clutch side): 12 mm · Weight: 784 g · Number of gears: 1 pcs
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Collection only possible with online purchase and appointment.
