These are awesome! I want some
Let us know if you find 'em…please.
Or you could race in this speedo replacement 
http://www.allaboardtoys.com/transformers-clothing-animated-series-boys-briefs-3pk.aspx
.
He should get the team to wear these instead of what they have now:
http://i43.tinypic.com/2n8ugsm.jpg
When he gets off the bike he slips into these too.
Press conferences & interviews would be more fun with this:
http://www.amazon.com/Hasbro-Transformers-Optimus-Changer-Helmet/dp/B000LDSIRI
.
I spent a considerable amount of time one day looking online for adult under-roos.
Turns out they were going to make them, but it never hit the street.
Why can’t I have my spidey undies? 
-Jot
I can help.
Step 1. Win road race world championships.
Step 2. Ask for any damn socks you want.
sadly…your not alone i must confess!
They were going to make them, but it never happened.
Source.
-Jot