Weights anybody?

[missliz]

Pilates is awesome for cycling, it's all bout core strength and once you have solid gut muscles you'll sit the bike like a Tour rider. Abs are just the top layer- there are all sorts of weird little muscles inside the torso. Theres a big one on the pelvic floor that stabilizes every thing, too, and if you're too lazy to go to Pilates you can bust it hard by doing big dumbell presses on a flat bench with your knees bent and feet on the bench. This will goose the abs, too. All those muscles kick in to hold the torso stable as you press.
The best part about this little extra- the pelvic floor muscles stabilize the SI joints, very vulnerable in cyclists.

missliz

Forgot- make sure your back is flat, and pull the abs down towards the floor. After a few weeks, you'll quit feeling these muscles you never knew were in there, then it's time to shift to tougher more exotic ab work- you'll be able to do it, too.