Hey I've done 3000kms on my 02 kwaka zzr250 since I bought it (puts it up to about 21000kms) and it wont be long before I'll be looking for a service. Is every 5000 good, or 6000 fine? Also, what is typically done in a service?. Close motorcycles lists 4 stroke faired twin cylinder as $220. Does that sound reasonable? Thanks.