your in the right place for a 121x12 but a 1" lug! your gonna have to trim the center lugs down from a hawk track. they are 2 1/2 at the center!! i have a track that is missing a few lugs that i would sell.....200+ shipping
they round over at the edges so we can lean like a bike. its sweet! they would probly make a great track for watercrossrs' as they lean around the turns on the pond
