I was told 23 mm is really hard on pedal pressure. I have big Wilwoods and didnt feel 19 was adequate. You may be right. Figured if it would be available someone would know on this forum.
QUOTE(Chris H. @ Feb 25 2013, 07:11 PM)
Not sure I've heard of anyone using a 21mm MC. 17, 19, and 23 are the common ones...