Here's a review/overview of the Rayne Baby Killswitch
The specs below are all from the Rayne website...
Top Mount Specs:
Length - 35.5"
Width - 9.5"
Wheelbase - 29"
Drop Thru Mount Specs:
Length - 35.25"
Width - 9.5"
Wheelbase - 29"
My setup:
Rayne Baby Killer (Topmount)
Caliber 44s
Abec 11 Freerides
Biltins