I havent configured RIP on a Cisco router in years. Is it still the same paradigm, in which routers running RIP advertise their entire routing tables to their peers?
I was pretty impressed by Juniper's feature for RIP in which they allow you to create route filters, just as we do in BGP, so that you can control the routes you advertise ("export", using Juniper parlance) to a peer RIP router.
If you use an offset-list as suggested by Lucien you are not actually stopping the route being advertised hence your'e not actually saving any bandwidth. The route is still advertised to a neighbor it's just that neighbor doesn't use it because it is has a metric of 16.
A more direct approach is to simply use a distribute list which will actually control which routes are advertised out.
"Show me the configuration on R1 to have R1 advertise only subnets 18.104.22.168/24 and 22.214.171.124/24 to R2."
access-list 1 permit 126.96.36.199
access-list 1 permit 188.8.131.52
distribute-list 1 out fa0/1 <-- where fa0/1 connects to R2