Manitou mastodon pro forks 15mmthe manitou mastodon pro forks provide all terrain trail suspension for your fat bike it has been specifically designed to handle the situational extremes that a fat bike must endure all temperature performancethe damper provides all temperature performance soaking up rough terrain rocks roots and big hits when riding across freezing cold snow as well as when riding on shimmering hot sand and everything in between features material 7050 aluminium leg spr