When you remove the counterbalance gear from a ZX crankshaft there's no point in keeping the heavy counterbalancer mechanisms in the crankcase.
You can replace both balancer assemblies with these lightweight billet aluminum "dummy" shafts.
Remove the stock assemblies and insert these shaft in their place.
The precision-machined shaft blocks all oil passages

**Quantities are not guaranteed. Products may be on backorder from manufacturer. Special order and custom items are subject to wait times for production.**