Alternative sprockets?

Hi Everyone,
I’m wondering if there is an alternative sprocket for the tracks. I’m building something that has a bit more torque than I think the supplied 1/8" thick sprockets can reliably handle, and I’d really like to replace them with something thicker and made of delrin.

What I’d like to find is a sprocket with the appropriate number of teeth, the right pitch, and a diameter of approximately 3".

Has anyone else been down this path before?

Thanks!

Finding usable tracks and sprockets at a reasonable price is not an easy job. The below link has an interesting DIY track/sprocket setup.

forums.trossenrobotics.com/showthread.php?t=4027