One of the top designers in the custom motorcycle industry is headed to Grand Rapids, for a good cause. 

Lamar construction has commissioned Paul Jr. Designs to build a custom theme-bike for March of Dimes.  They started building the bike this week, to feature on the Discovery Channel's hit show American Chopper: Senior vs. Junior.

Part of the episodes will be shot here in Grand Rapids. The segment should be on the show next spring.

Viewers will have an opportunity to win the march of dimes bike through an online raffle, with the proceeds going back to help save babies.

The custom chopper will be at next year's Bikers for Babies event, which FOX 17 sponsors.