Exhaust modification on CB 1100 RS

[apex1_imp]

I did the hammering through and I honestly can’t hear a difference. What if I just made one large hole 25 or 30 mm?

I hammered through the hole, you should work little by little. Increase the size gradually and test it till you feel happy with the sound

If you look through the tail pipe with a flash light, you will see there are 3 holes with dia approx 6mm each. What you should do is to use a long rod of steel with larger dia, say 8mm, to enlarge those 3 holes, sound will be improved. That what i did.

how did you manage that? drill? hammer it through?

how did you manage that? drill? hammer it through?

how did you manage that? drill? hammer it through?

This is what the 2017 tip looks like in a cross section.


Looking at how it's baffled, I think one large hole that you suggested should do the trick.

This is what the 2017 tip looks like in a cross section.


Looking at how it's baffled, I think one large hole that you suggested should do the trick.
I don't know how you found that picture, but it is cool that you did.