Is there any way to look at the cylinders and determine if a 95" big bore kit has been installed?

 

If they are installed stock cylinders there are no external clues.
If they used Screaming Eagle cylinders they will have that lettering.
Obviously, if they are off the bike you can measure the bore.
Chuck Palmer

 

There's another 'easy way'. Throw the bike on a dyno!

 

There is NO way to tell from looking at the outside of the cylinder. The SE 95" cylinders are the same exact casting as the 88" just bored out to 95". You could remove a spark plug and see if you can read anything on the top of the piston. If it is a flat top pistons it will say 1550 on it along with screamin eagle. If it is a domed piston, then it is likely to be a 95" as well.

 

If you go to a 95" bore kit does that stop your warrany? I see most are talking about 203 cams.....Are they better then the S&S 511 cams?