Many modern motorcycles have rubber cushions built into the rear wheel to reduce stress of engine torque from damaging other components during gear or throttle changes. Over time, the rubber cushions will begin to wear and will loosen up. This will allow the sprocket to move independently from the wheel. When this occurs you may notice clunky shifting, excessive and abnormal noise, a surging feeling when holding a steady speed, or abrupt power transmission. The rubber cushions typically cost between $9-$15 each, and most bikes have between 4-6 cushions. This video shows how I fixed the loose cush drive on a Suzuki DL1000 V-Strom without replacing the cushions.
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