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.
| Dimension needle bearing | 12 / 15 x 14.7 mm (axe 12) |
| Manufacturer | Mazzucchelli |
| Material | Steel |
| Cheek type | standard |
| Thread type | M8x1.25 (standard thread) |
| Crankshaft stroke | 43 mm |
| Ø coupling pin / vario pin | 12 mm |
| Connecting rod length center-center | 87 mm |
| Total length crankpin ignition side | 90 mm, 106 mm |
| Ø crank webs | 69.7 mm |
| Thread length | 16 mm |
| Area of application | Racing |
| Ø Connecting rod eye | 15 mm |
| Bearing seat right | 15 mm |
| Ø piston pin (B) | 12 mm |
| Ø Bearing seat (ignition side) | 15 mm |
| Wide crank webs | 33 mm |
| Length 1st paragraph | 21 mm |
| Length 2nd paragraph | 44 mm |
| Length 3rd paragraph | 63.5 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 time | 139 ° |
| Control time before O.T | 81 ° |
| Control time according to O.T | 58 ° |
| Weight | 705 g |
| Number of gears | 1 pcs |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
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