Overhauling the selector drum assembly? Renewing as many of the wear-prone components at the same time will attain the best results.
Interfacing worn parts with new may lead to premature wear of the new parts and compromise the smooth, quiet interface of gears and the long-term durability of the assembly. The same criteria applies to the gearbox which will require checking over at the same time.
Other related parts you may wish to consider adding to your shopping cart:
Pro-workshop gasket sealant: 08C70K0234M. Add as many items as you wish to the same shopping cart and still only pay the same single fixed price shipping cost. This component may have other applications in the Suzuki model range.