The best replacement for vulcan is shadow.

The best alternatives to vulcan are rated as following:
★★★★★  shadow
★★★★  klingon
★★★  duratec
★★★  romulan
★★★  stampede
★★★  v star
★★  vtx
★  honda shadow
★  boulevard
★  black bolt
★  vstar
  virago
  road star
  klingon strength
  hephaestus
  roadstar
  krypton
  garland
  sportster
  wolf range
  yamaha roadliner

Your alternative for vulcan is not listed? Suggest!
Speaking about vulcan, one probably shouldn't forget about red arrows.

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



Google Trends

Scale is based on the average worldwide traffic of vulcan in all years. Click on graph for more.
vulcan
shadow
klingon