Originally Posted by Chickentrader

The CO1 magnesium bulkheads use 10 x 6 x 3 bearings for the layshaft; but the red CO2 bulkheads use 12 x 6 x 4 bearings, and no plastic inserts. It is possible that the plastic inserts will fit the red bulkheads however, and maybe the 12 x 6 x 4 bearings will fit the magnesium bulkheads if you don't use the inserts. Perhaps Patrizio will offer magnesium bulkheads for the CO2 with the plastic inserts sometimes in the future; we used the magnesium bulkheads in our CO1, and we never experienced any cracks in them.

The CO2 use plastic eccentrics for the rear diff though, and they are meant to dampen vibrations.

Kindest regards,
Lars.