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.
| Thickness | 4 mm |
| Manufacturer | Polini |
| Material | Steel |
| Surface | galvanized (blue) |
| Weight | 110 g |
| Ø inside | 90 mm |
| Ø outside | 120 mm |
| Number of fixing points | 5 pcs |
| Area of application | Tuning |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
Accessories & related products
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · 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 · Weight: 554 g · Ø Internal flywheel: 80.5 mm · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Number of fixing points: 2 pcs
EUR 612.70
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 · Thread type: MF10x1.25 (fine pitch thread) · Connecting rod length center-center: 87 mm · Weight: 784 g · 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 · Bearing seat right: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (ignition side): 15 mm · 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 · Area of application: High End · Area of application: Racing · Area of application: Tuning · 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 355.30
Polini 47 mm cylinder kit EVO 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
Nominal diameter: 47 mm · Manufacturer: Polini · Area of application: High End · Camouflaged: No · Area of application: Tuning · Material: Gray cast iron · Displacement: 75 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 49.8 mm · Ø Outlet outside: 22 mm · Ø Outlet outside: 27 mm · Hole pattern [mm]: 43 x 52 · Ø piston pin (B): 12 mm · Number of fixing points: 4 pcs · Hole spacing outlet: 23 mm · Hole spacing outlet: 38 mm · Thread outlet: M5x0.8 (standard thread) · Decompressor: Yes
EUR 343.10
Polini CP 21 mm carburetor & air filter (hand choke) | Piaggio Ciao, SI, Bravo, Boxer
Nominal diameter: 21 mm · Manufacturer: Polini · Camouflaged: No · Area of application: Racing · Area of application: Tuning · Component group Carburetor: Carburetor complete · Material: Aluminum · Width: 66 mm · Height: 122 mm · Carburetor type: CP · Total length: 71 mm · Ø Inside entrance: 42 mm · Ø Output inside: 22.5 mm · Ø Air filter connection: 47 mm · Mounting type: Rubber sleeve · 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
EUR 208.30
Polini piston 47 mm EVO cylinder (12 mm KoBo) | Piaggio Ciao, SI, Bravo, Boxer, Grillo
Nominal diameter: 47 mm · 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 · 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 107.70
Moped fans also bought
GPO 15 mm carburetor tuning | Puch
Manufacturer: GPO · Material: Aluminum · Component group Carburetor: Carburetor complete · Width: 50 mm · Carburetor type: SRE · Height: 95 mm · Nominal diameter: 15 mm · Nozzle size: 62 · Total length: 66 mm · Nozzle thread: M3.5x0.6 (standard thread) · Ø fuel hose connection: 6 mm · Ø Inside entrance: 15 mm · Ø Internal connection: 20 mm · Ø Output inside: 15 mm · Ø Air filter connection: 20 mm · Mixed oil connection: No · Mounting type: Plug connection clamped · Vacuum connection: No · Choke control: Hand choke · Nozzle block: 2.17 · Camouflaged: No · Area of application: Tuning · Clamping screw torque (max.): 4 N/m
EUR 79.60
Not so nice 
Chrome luggage rack | Puch Maxi S
Total length: 425 mm · Material: Steel · Surface: chrome-plated · Color: Chrome · Wheel size: 17 " · Width: 168 mm · Mounting type: Nuts & bolts · Hole spacing: 29 mm · Number of fixing points: 4 pcs · Height: 32.5 mm · Ø mounting hole: 8.3 mm · Ø mounting hole: 9 mm
EUR 24.40
Airsal 44 mm cylinder kit 65 ccm camouflaged | Puch
Nominal diameter: 44 mm · Manufacturer: Airsal · Area of application: Tuning · Camouflaged: Yes · Material: Aluminum · Surface: sandblasted · Displacement: 65 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 25 mm · Inlet window: 24 / 20 x 15 mm · Thread inlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Ø piston pin (B): 12 mm · Number of fixing points: 4 pcs · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Decompressor: Yes · Hole spacing inlet: 38 mm
EUR 122.40
Hot 
GPO mushroom air filter grille, Bing SRE (Ø=20 mm)
Ø outside: 61 mm · Total length: 113 mm · Manufacturer: GPO · Material: Metal · Camouflaged: No · Material: Rubber · Color: Chrome · Color: black · Filter type: Grille · Ø Internal connection: 20 mm · Length rubber part: 63.5 mm · Length of filter section: 49 mm · Mounting type: Bride · Mounting type: Plug connection clamped · Area of application: Tuning
EUR 15.80
Hot
Tank sticker "PUCH maxi S" 204 x 29 | Puch Maxi S
Material: Polyvinyl chloride (PVC) · Color: Chrome · Color: black · Color: green · Color: white · Width: 204 mm · Rear side texture: Adhesive · Consistency: UV-resistant · Consistency: petrol resistant · Place of use: Tank (+ frame) · Border: Chrome surround · Height: 29 mm · Transferfolie: No · Puch OEM number: 349.2.20.537.0
EUR 10.40
Plastic license plate holder (CH version)
Total length: 175 mm · Manufacturer: Made in Switzerland · Material: Brass · Material: Plastic · Color: black · Width: 108 mm · Mounting type: Nuts & bolts · Hole spacing: 50 mm · Number of fixing points: 9 pcs · Height: 11 mm · Thread type: M5x0.8 (standard thread) · Thread length: 6 mm · Ø mounting hole: 6 mm
EUR 9.70
Polini EVO Electronic ignition | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · 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 · Weight: 554 g · Ø Internal flywheel: 80.5 mm · Ø Flywheel outside: 105 mm · Ø Flywheel outside: 138.5 mm · Number of fixing points: 2 pcs
EUR 612.70
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
