Clutch Baseplate BFA inner basket for BFA clutch

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Product description
The perfect connection between the crankshaft and the clutch, for all Vespa largeframe models.
PIAGGIO designed these engines with a cylindrical flange, a spring washer and a M12 nut holding the crankshaft and clutch together. Generally speaking, this arrangement works quite well in a standard engine. Nowadays though, this tested set up is not quite capable of reliable transmission of the power outputs that have become achievable. To solve this we can now present a solution with the following advantages:
Interlocking cog-teeth connection.
Simple de/mounting.
Solid and enduring connection, for all mileages and power outputs.
We now have a range of crankshafts and complementary clutches available equipped with interlocking connections that are extremely solid and stable in operation. This technology has already been established in our BFA 306 engine design. These performance engines are easily capable of power outputs of up to 72PS! When stripping such an engine following operation, the clutch could be removed by hand once the holding nut had been undone, with absolutely no wear discovered! These achievements led us to transfer this advanced idea to more conventional engine casings, set ups and clutch concepts.
Without a woodruff key but with a M14 holding nut thread. All crankshafts and clutches equipped with this interlocking connection are compatible with each other. With this system the components are locked together and held in position by the M14 holding nut, eliminating the need for a woodruff key. On original engine casings, a 3.5mm thick spacer disc must be positioned between the clutch and bearing, with our BFA engine casings a thinner 2.5mm spacer disc is used.
Conclusion
: A complete solution, eliminating once and for all one of the weakest links in the Vespa largeframe engines drive-train.