Complex sentence: The Triumph Speed Four is a standard or streetfighter motorcycle made by Triumph from 2002 to 2006 as the naked, or non-faired brother of the TT600 sport bike introduced in 1999.
Split into simpler sentences: The Triumph Speed Four is a standard or streetfighter motorcycle made by Triumph from 2002 through 2006. It is the naked, or non-faired brother of the TT600 sport bike introduced in 1999.