What Speaker Upgrade have you done on your ST?

I know some people have done a speaker upgrade on their ST's. My question is what did you all use? Does anybody know if Kicker PS5250 5-1/4" 2-way motorcycle speakers (2-ohm) will fit under the grill?

I think that what I put in ours and if I remember correctly ( it’s been a couple of years) there a SNUG fit. So yeah they work.
Oh and sound way better.

Thanks for the info James199.