The best replacement for m109r is raider.

The best alternatives to m109r are rated as following:
★★★★★  raider
★★★  vmax
★★★  vtx 1800
★★★  v rod
★★★  hayabusa
★★  m109r2
★★  v-rod
★★  yamaha raider
★★  m90
★  rocket 3
★  honda vtx 1800
★  vtx
★  c109r
★  vrod
★  yamaha warrior
★  night rod
★  vtx1800
  triumph rocket
  harley v-rod
  rocket iii
  victory hammer

Your alternative for m109r is not listed? Suggest!
Speaking about m109r, one probably shouldn't forget about fat tire kit.

Other search terms related to m109r and their ratings are:
★★★★★ fat tire kit
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raider
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