Racing crankshaft compatible with all Piaggio Ciao, Si, Bravo, and Boxer mopeds.
This precision-balanced tuning crankshaft with polished connecting rods and crankshaft journals is compatible with all cylinders featuring 10 mm piston pins. Due to the longer intake valve timing, this tuning crankshaft is ideal for racing mopeds.
For installation, a 16 x 0.5 mm shim must be inserted between the racing crankshaft and each of its main bearings.
Caution: The crankshaft journal is 1 mm shorter than on the original crankshaft; therefore, the ignition cam must be shortened by 1 mm to ensure that the flywheel seats properly on the taper. Alternatively, you can use the pre-machined cam from the accessories.
A brand-name product from the Portuguese manufacturer Jasil under the Top Racing brand.
| Manufacturer | Jasil |
| Material | Steel |
| Area of application | Racing |
| Cheek type | standard |
| Crankshaft stroke | 43 mm |
| Ø coupling pin / vario pin | 12 mm |
| Thread type | M8x1.25 (standard thread) |
| Ø piston pin (B) | 10 mm |
| Connecting rod length center-center | 87 mm |
| Total length crankpin ignition side | 91.5 mm, 105 mm |
| Ø crank webs | 69.8 mm |
| Ø Connecting rod eye | 13 mm |
| Thread length | 13.5 mm |
| Bearing seat right | 15 mm |
| Weight | 716 g |
| Ø Bearing seat (ignition side) | 15 mm |
| Dimension needle bearing | 10 / 13 x 14.2 mm (axe 10) |
| Wide crank webs | 32.9 mm |
| Length 1st paragraph | 21.5 mm |
| Length 2nd paragraph | 44 mm |
| Length 3rd paragraph | 64.9 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 |
| Number of gears | 1 pcs |
| Piaggio | Ciao - P , SC , PX , C24 Si Bravo / Super Bravo Boxer Grillo |
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