I shot my Tundra without them for a few shots. My impression is that they didn't do all that much to absorb vibration, but maybe helped a little. Limb Savers are still the #1 accessory as far as cutting vibration and noise, IMHO. Get a decent pair of catwhiskers on the string, and a string leech or small ball of catwhiskers (cut in half and tied on) on the power cable above the serving. That last trick made a difference in noise, not only with my Dartons, but also with the Bowtech Duallys I had. I have a short Enhancer 2000 and a 6" Stealth stabilizer, which cut the vibes down to nothing.