This cast cylinder, which is supplied with the matching cylinder head, fits Piaggio Si, Bravo 2 and 3 as well as Grillo mopeds / mopeds.
Racing version from Polini. This cylinder is the revised version of the older 43mm cylinder kit from Polini.
Better timing and larger overflow channels make this racing cylinder even more powerful.
Excellent workmanship and durability, combined with an exceptional price-performance ratio make this cylinder one of the most popular on the market.
The piston pin has a diameter of 10 mm.
We can also offer you this cylinder kit without cylinder head, or with 12 mm piston pin diameter.
Quality product from the Italian manufacturer Polini.
Manufacturer: Polini · Ø cylinder: 41 - 43 mm · Area of application: Racing
Hole pattern [mm]: 55 x 34 · Manufacturer: Polini · Material: Gray cast iron · Surface: sandblasted · Displacement: 63 ccm · Crankshaft stroke: 43 mm · Nominal diameter: 43 mm · Ø cylinder neck: 45.7 mm · Ø Outlet outside: 22.4 mm · Ø outlet inside: 18.1 mm · Ø piston pin (B): 10 mm · Outlet type: clamped · Number of fixing points: 3 pcs · Decompressor: Yes · Camouflaged: No · Area of application: Tuning
| Nominal diameter | 43 mm |
| Manufacturer | Polini |
| Area of application | Tuning |
| Material | Gray cast iron |
| Surface | sandblasted |
| Displacement | 63 ccm |
| Crankshaft stroke | 43 mm |
| Ø cylinder neck | 45.7 mm |
| Ø Outlet outside | 22.4 mm |
| Ø outlet inside | 18.1 mm |
| Ø piston pin (B) | 10 mm |
| Outlet type | clamped |
| Number of fixing points | 3 pcs |
| Hole pattern [mm] | 55 x 34 |
| Decompressor | Yes |
| Camouflaged | No |
| Piaggio | Si Bravo / Super Bravo Grillo |
Ratings
Accessories & related products
Polini piston 43 mm (10 mm KoBo) | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Polini · Nominal diameter: 43 mm · Ø outside piston (A): 42.94 mm · Ø piston pin (B): 10 mm · Compression height (C): 26.4 mm · Curvature (D): 2.55 mm · Total piston height (E): 50.5 mm · Number of piston rings (F): 2 pcs · Piston ring impact: Flank safety device (FS) · Piston ring mold: Rectangular ring · Piston ring height: 1.5 mm · Weight piston kit: 83 g
EUR 97.80
swiing® ingenious stud bolt M7x120 / Ø 7.3 shank - 10.9 strength
Manufacturer: swiing® ingenious parts · Material: Steel · Surface: galvanized (blue) · Diameter: 7.3 mm · Thread type: M7x1 (standard thread) · Total length: 120 mm · Thread length: 20 mm · Thread length: 30 mm · Strength class: 10.9
EUR 6.00
Moped fans also bought
Hot 
Brake cable Ø 1.8 mm x 220 cm (pear-shaped nipple)
Ø nipple: 3.5 mm · Ø nipple: 6 mm · Nipple length: 10 mm · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Number of components: 1 pcs · Ø Stranded wire: 1.8 mm · Nipple shape: Pears · Cable length: 2200 mm · Area of application: Standard
EUR 2.95
Magura gas cable clamp / deco cable clamp Ø 5 x 6 mm
Manufacturer: Magura · Material: Brass · Material: Steel · Surface: nickel-plated · Thread type: M4x0.7 (standard thread) · Ø Cable bushing: 1.6 mm · Drive: Slot · Screw head: Lens head · Ø outside: 5 mm · Thread length: 4 mm · Total length: 6 mm · Number of components: 2 pcs
EUR 2.45
Hot
Leonelli 12V voltage regulator (1A quality)
Manufacturer: Leonelli · Material: Aluminum · Material: Plastic · Tension: 12 V · Performance: 100 W · Type of current: Alternating current (AC) · Mounting type: Screws · Total length: 50 mm · Ø mounting hole: 6 mm · Width: 27 mm · Height: 15 mm
EUR 42.70
Hot
Leonelli 6V voltage regulator (1A quality)
Manufacturer: Leonelli · Material: Aluminum · Material: Plastic · Width: 27 mm · Type of current: Alternating current (AC) · Tension: 6 V · Height: 15 mm · Performance: 50 W · Total length: 50 mm · Mounting type: Screws · Ø mounting hole: 6 mm
EUR 36.60
CIF Clamping screw front brake | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: CIF · Material: Steel · Surface: galvanized (blue) · Thread type: M7x1 (standard thread) · Number of components: 6 pcs · Ø outside: 11 mm · Width across flats: 11 mm · Total length: 25 mm · Drive: External hexagon · Screw head: Hexagon · Area of application: Standard · Thread length: 19.5 mm
EUR 4.80
Dell'Orto 13/13 SHA carburetor | Piaggio SI, Boss, Grillo
Nominal diameter: 13 mm · Manufacturer: Dell'Orto · Material: Aluminum · Component group Carburetor: Carburetor complete · Color: black · Mounting type: Plug connection clamped · Carburetor type: SHA (Piaggio) · Total length: 55 mm · Ø Internal connection: 16 mm · Ø without reducing sleeve: 18 mm · Ø Inside entrance: 13 mm · Ø Output inside: 13 mm · Ø Air filter connection: 50.8 mm · Width: 60 mm · Height: 118 mm · Area of application: Tuning · Ø fuel hose connection: 5.2 mm · Ø fuel hose connection: 6 mm · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Camouflaged: No · Nozzle size: 66
EUR 85.60
Collection only possible with online purchase and appointment.
