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 |
| Material | Gray cast iron |
| Displacement | 75 ccm |
| Crankshaft stroke | 43 mm |
| Nominal diameter | 47 mm |
| Area of application | Tuning, High End |
| 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 pattern [mm] | 43 x 52 |
| Hole spacing outlet | 23 mm, 38 mm |
| Thread outlet | M5x0.8 (standard thread) |
| Decompressor | Yes |
| Camouflaged | No |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Grillo |
Accessories & related products
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Light coil voltage: 12 V · Direction of rotation: right · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Ø Internal flywheel: 80.5 mm · Performance: 90 W · Number of fixing points: 2 pcs · Area of application: High End · Area of application: Racing · Area of application: Tuning · Weight: 554 g
EUR 593.10
Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
Manufacturer: Polini · Material: Steel · Cheek type: Full cheeks · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 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 · Thread type: MF10x1.25 (fine pitch thread) · Thread length: 14 mm · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · 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
EUR 344.00
Polini CP 21 mm carburetor & air filter (hand choke) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Carburetor type: CP · Total length: 71 mm · Nominal diameter: 21 mm · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 82 · Nozzle size: 84 · Nozzle size: 86 · Ø Inside entrance: 42 mm · Width: 66 mm · Ø Output inside: 22.5 mm · Height: 122 mm · Ø Air filter connection: 47 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mounting type: Rubber sleeve · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Area of application: Racing · Area of application: Tuning · Nozzle block: 35-12 · Size of secondary nozzle: 40
EUR 201.60
Hot 
Polini exhaust "EVO" (27 mm connection) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Material: Aluminum · Material: Steel · Color: black-matt · Surface: blank · Color: graphite colors · Surface: varnished · Ø outside: 83 mm · Total length: 750 mm · 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
EUR 296.50
Polini piston 47 mm EVO cylinder (12 mm KoBo) | Piaggio Ciao, SI, Bravo, Boxer, Grillo
Manufacturer: Polini · Ø outside piston (A): 46.92 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 · Nominal diameter: 47 mm · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.2 mm · Ø piston pin (B): 12 mm · Weight piston kit: 101 g
EUR 104.30
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 · Thread type: M6x1 (standard thread) · Ø outside: 22.4 mm · Ø outside: 27 mm · Total length: 13.2 mm · Total length: 17.2 mm · Thread length: 13 mm · Ø mounting hole: 6.5 mm · Hole spacing: 23 - 38 mm
EUR 35.50
Explore categories from Cylinder
Moped fans also bought
Dell'Orto 16/16 SHA carburetor hand choke
Manufacturer: Dell'Orto · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Carburetor type: SHA · Total length: 82 mm · Color: black · Nominal diameter: 16 mm · Width: 72 mm · Nozzle thread: M5x0.8 (standard thread) · Height: 111 mm · Ø without reducing sleeve: 21 mm · Nozzle size: 82 · Ø Inside entrance: 16 mm · Ø Internal connection: 19 mm · Ø Output inside: 16 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 · Area of application: Tuning
EUR 82.90
Mazzucchelli crankshaft "original" 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Mazzucchelli · Material: Steel · Cheek type: standard · Area of application: Original · Area of application: Standard · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 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 · Thread type: M8x1.25 (standard thread) · Ø Connecting rod eye: 15 mm · Thread length: 16 mm · Bearing seat right: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 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: 130 ° · Control time before O.T: 77 ° · Control time according to O.T: 53 ° · Weight: 698 g · Number of gears: 1 pcs
EUR 171.90
Malossi crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Malossi · Cheek type: Full cheeks · Material: Steel · Area of application: Racing · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 mm · Connecting rod length center-center: 87 mm · Total length crankpin ignition side: 91 mm · Total length crankpin ignition side: 106 mm · Ø crank webs: 69.95 mm · Thread type: M10x1.5 (standard thread) · Ø Connecting rod eye: 15 mm · Thread length: 15 mm · Bearing seat right: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 mm · Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · Wide crank webs: 32.4 mm · Length 1st paragraph: 21.3 mm · Length 2nd paragraph: 43.7 mm · Length 3rd paragraph: 63 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: 813 g · Number of gears: 1 pcs
EUR 308.40
SKF 6202 C3 ball bearing 15/35/11
Stock number: 6202 · Inner ring width: 11 mm · Manufacturer: SKF · Bearing clearance: C3 · Bearing cage: Sheet steel cage ball-guided · Bearing type: Deep groove ball bearing · Ø inside: 15 mm · Ø outside: 35 mm · Width: 11 mm · Puch OEM number: 900.4.6202
EUR 11.80
Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
Manufacturer: Polini · Material: Steel · Cheek type: Full cheeks · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 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 · Thread type: MF10x1.25 (fine pitch thread) · Thread length: 14 mm · Ø Connecting rod eye: 15 mm · Bearing seat right: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · 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
EUR 344.00
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
