Additional weight or balancing weight that is used in conjunction with the EVO Zündung from Polini on engine cases with rotary valve crankshaft on your Piaggio Ciao, Si, Bravo and Boxer moped / moped to compensate for the resulting imbalance.
The balancing mass gives your engine a smooth, even running when stationary and in operation and improves the «starting behavior». Depending on the setting, even more torque can be achieved with the additional weight.
The flywheel is suitable for all gearbox types that are operated with a rotary valve. In addition to the Polini Speed Engine, this also includes the original engine gearbox.
| Manufacturer | Polini |
| Material | Steel |
| Surface | galvanized (blue) |
| Thickness | 4 mm |
| Number of fixing points | 5 pcs |
| Ø inside | 90 mm |
| Ø outside | 120 mm |
| Weight | 110 g |
| Area of application | Tuning |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
Ratings
Accessories & related products
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Ø Internal flywheel: 80.5 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · Light coil voltage: 12 V · Performance: 90 W · Direction of rotation: right · Number of fixing points: 2 pcs · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Weight: 554 g
EUR 598.00
Polini EVO REED crankshaft 12 mm KoBo | Piaggio Ciao, SI, Bravo, Grillo
Dimension needle bearing: 12 / 15 x 14.7 mm (axe 12) · Manufacturer: Polini · Material: Steel · Cheek type: Full cheeks · Area of application: High End · Area of application: Racing · Area of application: Tuning · Ø coupling pin / vario pin: 12 mm · Crankshaft stroke: 43 mm · Connecting rod length center-center: 87 mm · Thread length: 14 mm · Total length crankpin ignition side: 91.5 mm · Total length crankpin ignition side: 105 mm · Ø crank webs: 70 mm · Ø Connecting rod eye: 15 mm · Weight: 784 g · Bearing seat right: 15 mm · Thread type: MF10x1.25 (fine pitch thread) · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 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 · Number of gears: 1 pcs
EUR 346.80
Polini 47 mm cylinder kit EVO 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Material: Gray cast iron · Area of application: High End · Area of application: Tuning · Displacement: 75 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 47 mm · Ø cylinder neck: 49.8 mm · Ø Outlet outside: 22 mm · Ø Outlet outside: 27 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 43 x 52 · Ø piston pin (B): 12 mm · Hole spacing outlet: 23 mm · Hole spacing outlet: 38 mm · Thread outlet: M5x0.8 (standard thread) · Decompressor: Yes · Camouflaged: No
EUR 334.90
Polini CP 21 mm carburetor & air filter (hand choke) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Material: Aluminum · Component group Carburetor: Carburetor complete · Area of application: Racing · Area of application: Tuning · Carburetor type: CP · Nominal diameter: 21 mm · Width: 66 mm · Total length: 71 mm · Height: 122 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Ø Inside entrance: 42 mm · Ø Output inside: 22.5 mm · Mounting type: Rubber sleeve · Ø Air filter connection: 47 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Camouflaged: No · Nozzle size: 82 · Nozzle size: 84 · Nozzle size: 86 · Size of secondary nozzle: 40
EUR 203.30
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 105.20
Moped fans also bought
Polini air filter | Piaggio Ciao, SI, Bravo, Boxer
Material: Plastic · Manufacturer: Polini · Camouflaged: No · Total length: 29 mm · Filter type: Foam · Width: 98 mm · Height: 94.7 mm · Color: black · Mounting type: Plug connection clamped · Ø Internal connection: 50.6 mm · Ø outside: 53 mm · Area of application: Tuning
EUR 17.80
Polini Speed Engine engine housing electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Stock number: 6202 · Manufacturer: Polini · Material: Aluminum · Surface: sandblasted · Color: silver · Crankshaft stroke: 43 mm · Height: 104 mm · Width: 175 mm · Total length: 215 mm · Ignition type: Electronic
EUR 251.10
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Ø Internal flywheel: 80.5 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · Light coil voltage: 12 V · Performance: 90 W · Direction of rotation: right · Number of fixing points: 2 pcs · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Weight: 554 g
EUR 598.00
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
