Not in the RCR version... for a good reason.....
Ever heard an R26B up close and personal at full song. I.E. turn 9 at Road Atlanta? It will rattle your the fillings in your teeth out! Very annoying pitch, too.......I saw them run at Sears at let me tell you the Prototype BMW 12 cylinder was the loudest road race car I have ever heard in person. I could not hold my ears closed with my hands sufficiently to void the piercing sounds it made.
Any colour you want buddy.....
Damned metric units...
JR