Racing crankshaft compatible with all Piaggio Ciao, Si, Bravo, and Boxer mopeds.
This precision-balanced tuning crankshaft with polished flanks fits all cylinders with 12 mm piston pins. Due to the longer intake timing, this tuning crankshaft is ideal for racing mopeds.
During installation, a 16 x 0.5 mm shim must be inserted between the racing crankshaft and each of its main bearings.
Note: The crankpin is 1 mm shorter than on the original crankshaft; therefore, the ignition cam must be shortened by 1 mm to ensure the flywheel seats properly on the cone. Alternatively, you can use the pre-machined cam included in the accessories.
A brand-name product from the Portuguese manufacturer Jasil under the Top Racing brand.
| Manufacturer | Jasil |
| Cheek type | standard |
| Crankshaft stroke | 43 mm |
| Ø coupling pin / vario pin | 12 mm |
| Connecting rod length center-center | 87 mm |
| Total length crankpin ignition side | 91.5 mm |
| Ø piston pin (B) | 12 mm |
| Ø Connecting rod eye | 15 mm |
| Ø Bearing seat (clutch side) | 15 mm |
| Ø Bearing seat (ignition side) | 15 mm |
| Thread type | M8x1.25 (standard thread) |
| Dimension needle bearing | 12 / 15 x 14.7 mm (axe 12) |
| Wide crank webs | 32.9 mm |
| Length 1st paragraph | 21.5 mm |
| Length 2nd paragraph | 44 mm |
| Length 3rd paragraph | 64.9 mm |
| Number of gears | 1 pcs |
| Area of application | Racing |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
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