The camshafts and their interfacing parts like valves, valve springs and rockers are the key to good performance - when they wear or become damaged performance will drop off alarmingly.
New replacement parts is the best policy - this perfectly engineered component is produced to exacting Japanese quality control standards.
Other related parts you may wish to consider
Add as many items as you wish to the same shopping cart new bolts 0910307001, tappet adjustment screw and nut 1284249201 1284327A00 and rocker-arm shaft 1286127A00 for example, and still only pay the same single fixed price shipping cost. This component may have other applications in the Suzuki model range so please ensure the part-numbers you order are correct for your particular model.