Finally a system for split limb crossbows that really does make a drastic difference in sound and vibration for the new high powered crossbows on the market today. This system has been tested to reduce noise levels by as much as 38 decibels, and up to 30% reduction in vibration on today's leading split limb crossbows. The new Split Limb crossbow system is simply amazing with the same quality and effect you have come to expect from X-Factor products. Give one a try on your crossbow today and be dead silent! Black.