Quote Originally Posted by phillysrt4 View Post
or we can just keep R6 and R3 because of displacement in CCs and R1 because its #1 and teh bestest evar!
I'm still calling

R6 is 599cc and R3 is 312cc... so now you're rounding for marketing's sake. R5.99 and R3.12 would sound really stupid.

Either way my 74ci Sportster makes more torque at ~4,000rpms than my 61ci R1 did at it's torque peak ~ 8,300rpms.