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.
| Manufacturer | Polini |
| Camouflaged | No |
| Area of application | Tuning, High End |
| Material | Gray cast iron |
| Displacement | 75 ccm |
| Nominal diameter | 47 mm |
| Crankshaft stroke | 43 mm |
| Ø piston pin (B) | 12 mm |
| Ø cylinder neck | 49.8 mm |
| Ø Outlet outside | 22 mm, 27 mm |
| Number of fixing points | 4 pcs |
| 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 |
Ratings
Accessories & related products
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Light coil voltage: 12 V · Performance: 90 W · Direction of rotation: right · Ø Internal flywheel: 80.5 mm · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Number of fixing points: 2 pcs · Weight: 554 g · Area of application: High End · Area of application: Racing · Area of application: Tuning
CHF 499.90
Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
Manufacturer: Polini · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Ø coupling pin / vario pin: 12 mm · Connecting rod length center-center: 87 mm · 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 · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø Bearing seat (ignition side): 15 mm · Thread type: MF10x1.25 (fine pitch thread) · Thread length: 14 mm · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · 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 · Area of application: High End · Area of application: Racing · Area of application: Tuning
CHF 289.90
Polini CP 21 mm carburetor & air filter (hand choke) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Camouflaged: No · Component group Carburetor: Carburetor complete · Material: Aluminum · Carburetor type: CP · Nominal diameter: 21 mm · Ø Inside entrance: 42 mm · Ø Output inside: 22.5 mm · Ø Air filter connection: 47 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Nozzle size: 82 · Nozzle size: 84 · Nozzle size: 86 · Size of secondary nozzle: 40 · Mounting type: Rubber sleeve · Total length: 71 mm · Width: 66 mm · Height: 122 mm · Area of application: Racing · Area of application: Tuning
CHF 169.90
Hot 
Polini EVO exhaust (27 mm connection) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Material: Aluminum · Material: Steel · Surface: blank · Surface: varnished · Ø outside: 83 mm · Total length: 750 mm · Color: black-matt · Color: graphite colors · Ø Silencer: 60 mm · Ø Internal connection: 27 mm · Ø Flame tube outside: 27 mm · Exhaust type: Cone / double cone · Mounting type: Tab for screwing · Number of fixing points: 2 pcs · Flame tube attachment: Plug connection
CHF 249.90
Polini piston 47 mm EVO cylinder (12 mm KoBo) | Piaggio Ciao, SI, Bravo, Boxer, Grillo
Manufacturer: Polini · Nominal diameter: 47 mm · Ø outside piston (A): 46.92 mm · Ø piston pin (B): 12 mm · Compression height (C): 31.6 mm · Curvature (D): 2 mm · Total piston height (E): 55.5 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.2 mm · Weight piston kit: 101 g
CHF 87.90
Polini exhaust flange EVO cylinder kit | Piaggio Ciao, Si, Bravo, Boxer
Manufacturer: Polini · Material: Steel · Surface: burnished · Ø inside: 18 mm · Ø inside: 24 mm · Ø outside: 22.4 mm · Ø outside: 27 mm · Total length: 13.2 mm · Total length: 17.2 mm · Thread type: M6x1 (standard thread) · Thread length: 13 mm · Hole spacing: 23 - 38 mm · Ø mounting hole: 6.5 mm
CHF 29.90
Explore categories from Cylinder
Moped fans also bought
Dell'Orto 16/16 SHA carburetor hand choke
Color: black · Manufacturer: Dell'Orto · Component group Carburetor: Carburetor complete · Material: Aluminum · Area of application: Tuning · Nominal diameter: 16 mm · Carburetor type: SHA · Nozzle thread: M5x0.8 (standard thread) · Camouflaged: No · Ø without reducing sleeve: 21 mm · Width: 72 mm · Nozzle size: 82 · Ø Inside entrance: 16 mm · Ø Internal connection: 19 mm · Total length: 82 mm · Ø Output inside: 16 mm · Height: 111 mm · Ø Air filter connection: 56 mm · Ø Air filter connection: 58.5 mm · Ø fuel hose connection: 5.1 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Choke control: Hand choke
CHF 69.90
Mazzucchelli crankshaft "Racing" 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Mazzucchelli · Material: Steel · Cheek type: standard · Crankshaft stroke: 43 mm · Ø coupling pin / vario pin: 12 mm · Connecting rod length center-center: 87 mm · Total length crankpin ignition side: 90 mm · Total length crankpin ignition side: 106 mm · Ø crank webs: 69.7 mm · Ø piston pin (B): 12 mm · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø Bearing seat (ignition side): 15 mm · Thread type: M8x1.25 (standard thread) · Thread length: 16 mm · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · Wide crank webs: 33 mm · Length 1st paragraph: 21 mm · Length 2nd paragraph: 44 mm · Length 3rd paragraph: 63.5 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 · Inlet control time: 139 ° · Control time before O.T: 81 ° · Control time according to O.T: 58 ° · Weight: 705 g · Number of gears: 1 pcs · Area of application: Racing
CHF 149.90
Not in stock
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Light coil voltage: 12 V · Performance: 90 W · Direction of rotation: right · Ø Internal flywheel: 80.5 mm · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Number of fixing points: 2 pcs · Weight: 554 g · Area of application: High End · Area of application: Racing · Area of application: Tuning
CHF 499.90
Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
Manufacturer: Polini · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Ø coupling pin / vario pin: 12 mm · Connecting rod length center-center: 87 mm · 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 · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø Bearing seat (ignition side): 15 mm · Thread type: MF10x1.25 (fine pitch thread) · Thread length: 14 mm · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · 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 · Area of application: High End · Area of application: Racing · Area of application: Tuning
CHF 289.90
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
