The best replacement for sportbike is harley.

The best alternatives to sportbike are rated as following:
★★★★★  harley
★★★★  cruiser
★★★  supermoto
★★  chopper
★★  street bike
★  dual sport
★  cruiser bike
★  superbike
★  sportster
★  sportbike
  adventure bike
  bobber
  motard
  supersport
  cruiser insurance
  sport bike

Your alternative for sportbike is not listed? Suggest!
Speaking about sportbike, one probably shouldn't forget about high miles.

Other search terms related to sportbike and their ratings are:
★★★★★ high miles
You have in mind a companion for sportbike and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sportbike in all years. Click on graph for more.
sportbike
harley
cruiser