Standard or Tourer Tip info

[Warlock]

Could someone give me the actually i.d. of the tips. I know the call them 4 inch, but need the i.d. Looking at maybe buying some truck stack tips for my new goldwing and wondering if it is the same size as the Valkyrie tips. Would measure mine, but sold it.
thanks, Warlock

[Bone]

Not the ID it's cold here in Mich. Slid a caliper over the OD and it's a 1/16 ish over 4 inch. subtract the thickness of chrome pipe x 2.

[da prez]

I used 4"  OD truck stacks with turnouts. I then transfered the screw hole for the tip to the stack.

                                     da prez