Sims riser dampener. Shock Stop™ technology virtually eliminates vibration and noise experienced following arrow release, acts as a string cushion, quickly and quietly brings oscillating bowstrings to dead stop. Molded CarbonAir quad limbs. Machined aluminum limb cups with limb isolator and limb wedge lock. Urethane limb isolator reduces vibration before it is transferred to the riser. Limb wedge lock provides precision alignment of limbs in relation to the centerline of the riser. Axle-to-Axle: 35". ECCENTRICS: Perimeter weight OneCam-75%.