Legacy united updated RiD 2001 Side Burn, though with quite the stylized car mode based on the odd Shadow Striker mold. That said, I do find the tolerances better on Side Burn, but the question remains about whether this dude is a true update and whether or not he is worth the get!
https://youtu.be/x7BL3DQMSKM
https://youtu.be/x7BL3DQMSKM
Source: Cybertron