MALOSSI Gear Box for Piaggio moped rear hub Ciao, Sì, Bravo, Boxer, Grillo, Superbravo, Boss

Description

This is the challenge: is it possible to improve the gearbox in which to turn the Malossi gears, super performing and above all more beautiful?

Die-cast aluminum, machined and finished in our lines. It looks like a carter but it's not: it's a work of art. The art of ennobling every single part of one of our favorite vehicles, the Ciao (this gearbox is suitable for Piaggio mopeds such as the Ciao, Si and cousins of the range). The art of increasing performance, shaping the material within the limits imposed by physics and factory dimensions.


What's new.

We added ribs to strategic sections to increase stiffness. We increased the diameter of the wheel shaft bearing housing and all others, and added ribs to compensate for the increased performance.
All within the original space: the gearbox uses pressed needle bearings for all gearbox shafts, NBR oil seals with spring sealing lip and auxiliary lip and a labyrinth to trap the oil and at the same time allow the gearbox to " breathe".

What we have optimized.

The gearbox simplifies gear housing, improves brake shoe operation with dedicated machined surfaces to guide it more accurately. Two concentric positioning bushings closed by five screws (one more than the original), with hexagonal cylindrical head. The gearbox uses high quality steel pins, pressed into the crankcase, for the lever and brake shoe pins. To improve rigidity we have eliminated the gasket: everything is sealed with silicone paste as in the most modern means (the LOCTITE® SI 5926 art. 4319441B that you find in our catalog is perfect).
The swingarm fixing screws are now pass-through and doubled in length, with a special sealant applied to the thread, so as to guarantee top-level fixing. The gearbox is supplied complete with bearings, oil seals, screws and shims: everything needed for perfect assembly with Malossi gears (but if you want you can also assemble it with the original gears).


ATTENTION: the gearbox does not allow the vehicle to operate in "bicycle" mode.


Technical features

Carter pair, die-cast aluminum silicon alloy material with high mechanical resistance.
Surface treatment of high resistance textured black paint.
Carter complete with closing and fixing screws, shims, roller cases and pins for lever and brake block.
Completely redesigned with reinforced structure with added ribs to withstand greater stresses.
Oil breather with internal labyrinth and external connection.
Casing coupling guaranteed by 5 fixing screws and 2 bushings.
M10 x 18 vehicle hub fixing screws.
Inner wheel axle bearing 15 x 21 x 12.
Wheel axle output bearing 20 x 26 x 12.
Clutch shaft internal bearing 9 x 13 x 12.
Clutch shaft output bearing 13 x 19 x 12.
4 gear return bearings 9 x 13 x 12.
FKM oil seals.
Button head screw with bronze sealing washer for oil level/fill.