This is a paid asset, but now you can download Low Poly Motorcycle Pack 01 for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Low Poly Motorcycle Pack 01 v1.0
Low Poly Motorcycle Pack:
● consists of these models:
– Low Poly Motorcycle 01
– Low Poly Motorcycle 02
– Low Poly Motorcycle 03
– Low Poly Motorcycle 04
● with separate (grouped) parts so you can animate whatever you need
● using only unity standard shaders: super easy to change colors & great performance!
● clean meshes
● for use as scene props or vehicles in your game
● no plugins or third party software needed
Have fun with it and let me know if you need to have anything customized!