Originally Posted by
wingracer
What are the ulti J compounds? I remember one of Josh's smowbirds set-ups he listed the x med or soft rears but J hard fronts.
This is a close comparison chart for Ulti compounds and shore ratings.
J Hard - Lilac - 37
J Med - Dbl Pink - 34
J Soft - Pink - 30
X Hard - Dbl Blue - 40
X Med - Blue - 35
X Soft - Green - 30
Y Hard - Black - 40
Y Med - Grey - 35
Y Soft - Yellow - 30