The Tour Block resembles the Hy-Road in that it is a core-less design, but with the internal ball removed from the Inverted Fe2 Technology found in every Hy-Road.
Core Type
Symmetric
16 pounds
RG
2.580
Diff
0.029
15 pounds
RG
2.610
Diff
0.030
14 pounds
RG
2.650
Diff
0.027
13 pounds
RG
2.630
Diff
0.009
12 pounds
RG
2.650
Diff
0.011