If the crankshaft needs to be renewed, then do so along with the other components that make up the assembly including all new bearings, connecting rods, pistons, piston rings, piston pin and the piston pin retention circlips - all pretty much essential when rebuilding the engine. Attempting to save money by reusing old parts is a false economy and may lead to premature wear or even failure of some of those new parts, particularly bearings.
Other crankshaft related parts you may wish to consider:
Where possible always try and renew the complete assembly - interfacing old parts with new is never ideal.
Add as many parts to the same shopping cart as you wish, piston circlips 0938122002 and springs 0944007001 for example and still only pay the same single fixed price shipping cost.
This component may have other applications in the Suzuki model lineup.