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Polini Item number: P2012100
Polini

Carburetor -POLINI- CP 21mm - AW=Ø24mm - plug-in connection - direct choke

product Carburetor -POLINI- CP 21mm - plug-in connection, direct choke
Polini no. 201.2100
Nominal dimension 21 mm
AW (connection width) Ø24 mm (plug connection)
Choke Direct choke (choke knob on carburetor)
material Aluminum (compact and lightweight)
119,00 €*
available immediately
Shipping weight 0,44 kg
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POLINI CP 21 - compact, lightweight and calibrated for performance

100% Made in Italy Aluminum housing Compact design approx. 40% lighter Flow-optimized intake path Ø24 mm plug-in connection Direct choke

Highlights

The POLINI CP 21 is Polini's first completely in-house carburetor generation: every component has been developed, manufactured and tuned to achieve constant fuel supply, clean throttle response and good performance with efficient consumption characteristics. The aluminum housing makes the CP very light and compact - ideal when there is little space in the frame or under the side cover.

Technology: Flow, supply, setup-friendliness

Short intake manifold with concentric geometry: optimizes the air flow during gas throughput and supports even mixture formation.
Stable fuel supply: larger needle and optimized fuel supply help to prevent fuel stall even under high load.
Overflow / return design in the atomizer area: supports clean flow dynamics in different slide positions.
Plastic float and controlled sealing needle: designed for consistent function over longer running times - facilitates tuning.

Tarature / Calibrations (factory calibration)

Note: The following values are the Polini factory calibration. Depending on the setup (cylinder, exhaust, filter, altitude, temperature), fine tuning may be necessary.

Main jet (Getto Massimo)100
Secondary jet (Getto Minimo)40
Needle (Spillo)14/22
Valve (Valvola)24x30
Atomizer bushing (Bussola Polverizzatore)d. 2,7

Polini recommends the use of a non-original open air filter. In addition, the Polini 316.0010 starter kit is recommended as a useful supplement.

Fit and connection

This version of the CP has a plug-in connection with Ø24 mm connection width (AW). The choke is designed as a direct choke, the choke knob sits directly on the carburettor. This is practical if you do not want to lay a choke cable or if you want to keep the handlebars original.

Technical data

Carburetor typePOLINI CP
Passage21 mm
Connection width (AW)Ø24 mm
ConnectionPlug connection
ChokeDirect choke (choke knob on carburetor)
Choke materialaluminum
Weight infoaccording to Polini approx. 40% lighter than classic carburetor designs
Made inItaly

Scope of delivery

1x POLINI CP 21 carburetor (Polini 201.2100, direct choke)
Factory fitting according to table (HD 100 / ND 40 / Needle 14/22 / Valve 24x30 / Atomizer Bush d.2,7)

The Polini factory calibration is a starting point. In practice, the final tuning depends on cylinder, exhaust, air filter, temperature and altitude. For clean performance, we recommend fine tuning (spark plug pattern, AFR/dyno).
Polini recommends a non-original, open air filter, as this better supports the flow potential of the CP.
Polini recommends the starter kit 316.0010 as a supplement. Depending on the vehicle and setup, this can be a useful addition to the starter function or choke setup.
With the direct ch oke, the choke knob is located directly on the carburetor - no cable needs to be laid. With a cable choke, the choke is operated via a cable from the handlebars or an external position.

Note: Carburetor tuning is always setup-dependent. For tuned engines, we recommend checking the jetting and ignition under load.

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