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For: Piaggio

21204

Mazzucchelli crankshaft "Racing" 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer

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EUR 184.50

Incl. 25.5% VAT.

Description

Racing crankshaft suitable for all Piaggio moped models (Ciao, Si, Bravo, Boxer, Grillo).

This finely balanced tuning crankshaft with polished connecting rod and cheeks fits all cylinders with 12 mm piston pins and impresses with its high-quality workmanship.

Due to the longer intake timing, this tuning shaft is ideal for racing mopeds.

Connecting rod eye (A): 15.0 mm
Ø bearing seat right (B): 15.0 mm
Ø bearing seat rear (C): 15.0 mm
Stroke (2xD): 43.0 mm
Sleeve length (E): 87.0 mm
Width of crank webs (F): 33.0 mm
1st shoulder (G): 21.0 mm
2nd shoulder (H): 44.0 mm
3rd shoulder (I): 63.5 mm
Total length crankpin end (J): 90.0 mm
Ø Vario / clutch pin (H): 12.0 mm
Dimension needle bearing: Ø 12 / 15 x 14.7 mm (axe 12)
Thread: M8 x 1.25 mm

Note: For assembly, a 16 x 0.5 mm shim must be inserted between the standard crankshaft and its main bearings.
When assembling, check that the pole wheel sits properly on the cone. Depending on the batch of crankshaft or pole wheel used, the key may need to be adjusted slightly.

ManufacturerMazzucchelli
MaterialSteel
Cheek typestandard
Crankshaft stroke43 mm
Ø coupling pin / vario pin12 mm
Connecting rod length center-center87 mm
Total length crankpin ignition side90 mm, 106 mm
Ø crank webs69.7 mm
Ø piston pin (B)12 mm
Thread length16 mm
Ø Connecting rod eye15 mm
Bearing seat right15 mm
Ø Bearing seat (ignition side)15 mm
Thread typeM8x1.25 (standard thread)
Dimension needle bearing12 / 15 x 14.7 mm (axe 12)
Wide crank webs33 mm
Length 1st paragraph21 mm
Length 2nd paragraph44 mm
Length 3rd paragraph63.5 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
Inlet control time139 °
Control time before O.T81 °
Control time according to O.T58 °
Weight705 g
Number of gears1 pcs
Area of applicationRacing
Piaggio

Ciao - P , SC , PX , C24

Si

Bravo / Super Bravo

Boxer

Grillo

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