25 mm bore hub with 6 mm key way and key way grub screw, heat treated cast aluminium 60 mm depth New type
30 mm bore hub with 6 mm key way heat treated cast aluminium. 50 mm depth ( Main image)
2 1/4″ PCD
1 1/2″ central spigot
3 x M 8 studs
Both can be used with the Cycle kart adapter plate.
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