The VYBE Stem comes with five performance elastomers that can be adjusted to fine tune the feel and feedback to the rider. Two elastomers, upper and lower, are positioned in the stem at all times. The upper rebound,bump stopelastomer is a constant, the lower compression elastomer is interchangeable, dependent on rider weight or simple rider feel preference. Both rebound and compression elastomers can be, using the top rebound and lower compression bolts, totally personalised to give the perfect response back to the rider.