This material stays flexible until impacted when it 'hardens' to offer better impact protection and force distribution

On a running belt

while being really stiff for great control

it is undeniable that the material has to last

low-profile collar

DT Swiss EXP 54T Star Ratchet-Springs-Grease Upgrade Kit Ignore Wholesale Tier 1 Brand Rule This material stays flexible untilReplace a worn out EXP ratchet or upgrade from the 36T to the 54T with these Star Ratchet upgrade kits from DT Swiss. The 54T kits provide a nice and crispy 6. 7 degrees of engagement for super responsive pedalling action. Note that DT Swiss have done a tonne of testing and detected that a faster engagement isn't always better and can actually create pedal kickback on some rear suspension designs. They recommend the 36T for most people. Kits include 2