Found commonly on motocross/offroad motorcycles, barkbusters are hand and lever protectors attached to the handlebars.
Barkbusters are great protection for your hands from hitting trees in an accident.
by Scottds80 August 08, 2006
1 more definition
Plastic or metal hand guards on dirt bikes that protect your hands from hitting objects such as trees, bushes, cactus, rocks flying at you from your buddy's rear tire.
If not for my bark busters I would have broke all my fingers from the rocks chuck sent flying at me when he twisted the throttle.
by David J. L. March 07, 2007