Racing crankshaft with a 46 mm stroke, compatible with your Piaggio Ciao, Si, Bravo, and Boxer moped equipped with a Simonini Racing engine case.
The high-quality workmanship and use of robust materials ensure reliable operation at speeds up to 16,000 rpm. The solid connecting rod is designed for the highest loads, making this racing crankshaft the ideal choice for high-performance racing engines.
Connecting rod eye (A): 16.0 mm
Ø Right-side bearing seat (B): 15.0 mm
Ø Ignition-side bearing seat (C): 15.0 mm
Stroke (2xD): 46.0 mm
Connecting rod length (E): 90.0 mm
Crankpin width (F): 34.0 mm
Outer diameter of crankpin: 74.0 mm
- Shoulder (G): 21.0 mm
- Step (H): 44.0 mm
- Step (I): 63.5 mm
Total length of crankshaft journal, ignition side, without thread (J): 90.0 mm
Ø Vario / clutch journal (H): 12.0 mm
Needle bearing dimensions: Ø 12 / 16 x 12.7 mm (axe 12)
Thread: M8 x 1.25 mm
Notes:
This tuning crankshaft can only be used in conjunction with the Simonini Racing engine case.
No shim is required between the racing crankshaft and its main bearings during installation.
A 6302 bearing (15x42x13 mm) is required in the left bearing seat on the ignition side, and a 6202 ball bearing (15x35x11 mm) is required in the right bearing seat.
You can find the matching ball bearings, the cylinder kit, and the compatible engine case in the accessories section.
A quality product from the Italian manufacturer Simonini.
| Manufacturer | Simonini |
| Cheek type | Full cheeks |
| Crankshaft stroke | 46 mm |
| Ø coupling pin / vario pin | 12 mm |
| Thread type | M8x1.25 (standard thread) |
| Connecting rod length center-center | 90 mm |
| Total length crankpin ignition side | 90 mm |
| Ø crank webs | 74 mm |
| Ø Connecting rod eye | 16 mm |
| Bearing seat right | 15 mm |
| Ø piston pin (B) | 12 mm |
| Ø Bearing seat (ignition side) | 15 mm |
| Dimension needle bearing | 12 / 16 x 12.7 mm (axe 12) |
| Wide crank webs | 33 mm |
| Length 1st paragraph | 21 mm |
| Length 2nd paragraph | 44 mm |
| Length 3rd paragraph | 63.5 mm |
| Area of application | High End |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
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Simonini 47.6 mm cylinder | Piaggio Ciao, SI, Bravo, Boxer
Manufacturer: Simonini · Material: Aluminum · Surface: sandblasted · Displacement: 100 ccm · Crankshaft stroke: 46 mm · Number of fixing points: 4 pcs · Nominal diameter: 47.6 mm · Ø piston pin (B): 12 mm · Outlet type: slanted · Hole pattern [mm]: 50 x 50 · Camouflaged: No · Area of application: Tuning
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Simonini 47.6 mm cylinder kit 12 mm KoBo | Piaggio Ciao, SI, Bravo, Boxer
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SKF 6302 C3 ball bearing 15/42/13 auxiliary shaft | Vespa P200, PX200, Cosa 200, Rally, T5
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