Originally Posted by
iriponsnow
These are a "B" tongue - same as the Krypton 130 & Factory, but very different from the 120 "P" tongue. What makes these way stiffer is the lower shell is Race PU plastics & comes up very high on the Lupo models. I will likely run "P" for In Bounds & seek a "M" for BC stuff personally.
B - 130 flex, PU material, hi rebound, lively
P - ~120 flex, Grilamid ish fiber, low rebounding, very damp
C - 110 flex, PU, hi rebound
M- 95 flex, Marphan (sp), low rebound
D- 85 flex, PU, mild rebounding