Vibrocore‚Ñ¢ is a proprietary, biodegradeable, complex foam core of precisely controlled density. Injected into Spank Industries handlebars, it reduces the harmful vibrations which can lead to hand-arm numbness and fatigue, as well as arm pump, while also increasing overall bar stiffness and fatigue life. Dual XGT CNC Bending Zirconium Doped 7-Series Alloy Shotpeen anodized MGR 
