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:
Add as many components as you wish to the same shopping cart, new bearings 1222938B00 thrust washer 1265238B00 piston-pins 1215114A01 & piston-pin circlips 0938123003 for example, and still only pay the same single fixed price shipping cost. Try this recommended pro-workshop gasket sealant 08C70K0234M. This component may have other, sometimes unrelated, applications within the Suzuki model range. So, please always check by the part-number rather than the description.