Smart trike tricycle Trike seat Replacement Part. This Auction is for the seat only as seen in the first 4 pics only, the complete tricycle is not included, it's just shown for reference only to show what it fits and is not included. #012323, this is not the model number, it's just for my inventory. Please see all pics as they are part of the description. This may not fit all smart trike bikes, please look at pics for compatibility. #012323 inventory number