the original ZX5 comes with all the one-way options for the front drivetrain, which i don't think the SP does (at least the early SP kits didn't).
you can get standard steel hex driver screws for the ZX5 for about £10 for a full replacement set.
The one-way options far outway the cost of the screws as a centre one way is essential.
Darren can probably confirm the one-way options in the current SP kit.
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