There are a few choices of buses to make if you wanted to take a bus ride from Kuala Lumpur to the airport (KLIA / LCCT ). The centre of this buses is at KL Central.
On the bus to and from Singapore you will stop by some roadside restplaces, where you can stock up on just about everything. Including helmets...
You can find coach services running from KL to the various different cities within Malaysia, and also to Singapore and Hatyai (Thailand) in Pudu Raya Bus Station.
Kuala Lumpur bus stop.
This is where u catch a bus to Singapore....real fun and really cheap 25-28 ringetts one way !
I strongly recomend U to use VIP bus wherever U go in Maley Peninsura. All seats are so comfortable and cheap.I've never seen like that!!