Polini CP 21 carburetor for your racing moped, moped and small motorcycle. The racing carburetor developed by Polini has a compact design and is around 40 % lighter than comparable carburetors. The air flow is optimized thanks to the short intake path and the circular passage. The larger needle and an adapted mixing tube support the atomization of the gas mixture. This makes it very easy to tune the carburetor. In addition, consumption is reduced even at high power levels.
Fastening to the intake manifold is by means of a rubber sleeve.
Installed main throttle body: 100
Installed secondary throttle body: 40
Ø Nominal: 21 mm
Ø Air filter connection: 46 mm
Ø Intake manifold connection: 25 mm
Alternative racing carburetors, the sleeve for installation and the matching nozzles can be found in the accessories section.
Quality product from the Italian manufacturer Polini.
| Nominal diameter | 21 mm |
| Manufacturer | Polini |
| Component group Carburetor | Carburetor complete |
| Material | Aluminum |
| Width | 66 mm |
| Nozzle block | 35-12 |
| Carburetor type | CP |
| Choke control | Hand choke |
| Nozzle size | 100 |
| Ø fuel hose connection | 6 mm, 7 mm |
| Total length | 71 mm |
| Ø Inside entrance | 42 mm |
| Ø Output inside | 22.5 mm |
| Height | 132 mm |
| Ø Air filter connection | 47 mm |
| Nozzle thread | M5x0.8 (standard thread) |
| Area of application | Tuning, Racing, Performance |
| Mixed oil connection | Yes |
| Mounting type | Rubber sleeve |
| Vacuum connection | Yes |
| Camouflaged | No |
| Size of secondary nozzle | 40 |
Accessories & related products
Polini jet set (100 - 118) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Component group Carburetor: Spraying · Quantity: 10 pcs · Carburetor type: CP · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 100 · Nozzle size: 102 · Nozzle size: 104 · Nozzle size: 106 · Nozzle size: 108 · Nozzle size: 110 · Nozzle size: 112 · Nozzle size: 114 · Nozzle size: 116 · Nozzle size: 118
EUR 48.90
Polini CP 17.5 mm carburetor (hand choke)
Manufacturer: Polini · Component group Carburetor: Carburetor complete · Area of application: Tuning · Carburetor type: CP · Nozzle thread: M5x0.8 (standard thread) · Mounting type: Plug connection clamped · Nominal diameter: 17.5 mm · Ø without reducing sleeve: 26 mm · Ø Internal connection: 24 mm · Ø Air filter connection: 46 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle size: 62 · Size of secondary nozzle: 40
EUR 171.50
Polini jet set (81 - 99) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Component group Carburetor: Spraying · Quantity: 10 pcs · Carburetor type: CP · Carburetor type: Coso · Carburetor type: Keihin · Carburetor type: PWK · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 83 · Nozzle size: 85 · Nozzle size: 87 · Nozzle size: 89 · Nozzle size: 91 · Nozzle size: 93 · Nozzle size: 95 · Nozzle size: 97 · Nozzle size: 99
EUR 48.90
Polini 26 mm carburetor (hand choke)
Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Carburetor type: Flat slide valve · Total length: 83 mm · Nominal diameter: 26 mm · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 105 · Ø Inside entrance: 26 mm · Width: 65 mm · Ø Output inside: 26 mm · Height: 155 mm · Ø Air filter connection: 49 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Size of secondary nozzle: 45
EUR 177.60
Polini CP 19 mm carburetor (hand choke) rubber flange
Nominal diameter: 19 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: CP · Camouflaged: No · Ø Inside entrance: 42 mm · Ø Output inside: 21.8 mm · Total length: 71 mm · Ø Air filter connection: 47 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Width: 66 mm · Mounting type: Rubber sleeve · Mixed oil connection: Yes · Height: 132 mm · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Nozzle size: 90 · Size of secondary nozzle: 40
EUR 183.70
Not in stock
Polini CP 23 mm carburetor (cable choke) rubber flange
Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Carburetor type: CP · Total length: 71 mm · Nominal diameter: 23 mm · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 110 · Ø Inside entrance: 42 mm · Width: 66 mm · Ø Output inside: 25 mm · Height: 132 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: Cable choke · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Nozzle block: 35-12 · Size of secondary nozzle: 40
EUR 171.50
Moped fans also bought
swiing® ingenious clutch springs reinforced (+20%) | Puch E50
Spring design: Pressure spring · Ø wire: 1.7 mm · Manufacturer: swiing® ingenious parts · Material: Spring steel · Surface: coated · Color: blue · Ø inside: 4.8 mm · Number of components: 3 pcs · Ø outside: 8.3 mm · Total length: 28 mm · Area of application: Tuning
EUR 21.90
Hot 
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Ø nipple: 3 mm · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Number of components: 1 pcs · Ø Stranded wire: 1.25 mm · Cable length: 2200 mm · Nipple shape: Cylinder · Nipple length: 5 mm · Area of application: Standard
EUR 2.95
NGK CR6 Racing ignition cable & plug High End red / 5 kΩ interference suppressed
Ø cable: 7 mm · Manufacturer: NGK · Material: Rubber · Color: red · Cable available: Yes · Cable length: 1000 mm · Suppressed: Yes · Resistance: 5000 Ω · Subcategory: Ignition cable · Subcategory: Spark plug connector
EUR 48.90
Inox
Hot
Bumm mirror round Inox
Manufacturer: Bumm · Material: Chrome steel (colloquially known as stainless steel) · Material: Steel · Test mark: none · Surface: chrome-plated · Color: Chrome · Clamping diameter: 22 mm · Ø mirror surface: 107 mm · Ø mirror rod: 8 mm · Mirror rod length: 300 mm · Total length: 360 mm · Thread size: M8 · Thread type: M8x1.25 (standard thread)
EUR 34.20
swiing® ingenious intake manifold Gilardoni italkit Inox
Manufacturer: swiing® ingenious parts · Material: Aluminum · Camouflaged: No · Area of application: Tuning · Ø inside: 21 mm · Ø External connection: 24 mm · Mounting type: Screws · Hole pattern [mm]: 60 x 35 · Number of fixing points: 4 pcs · Total height: 55 mm · Height flange center hole: 42.5 mm · Total length: 80 mm
EUR 83.20
Polini jet set (100 - 118) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Component group Carburetor: Spraying · Quantity: 10 pcs · Carburetor type: CP · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 100 · Nozzle size: 102 · Nozzle size: 104 · Nozzle size: 106 · Nozzle size: 108 · Nozzle size: 110 · Nozzle size: 112 · Nozzle size: 114 · Nozzle size: 116 · Nozzle size: 118
EUR 48.90
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
