Kona 6061 aluminium butted framekona 7005 and 6061 aluminum alloys are used extensively throughout our fleet of mountain and asphalt bicycles a tough durable affordable light alloy both kona 7005 and 6061 deliver fantastic reliable performance that lasts for thousands of rides much of our 70056061 tubing is butted andor formed meaning the tubings wall thickness can be increased or decreased as well as shaped allowing us to fine tune a particular frames strength and ride characteris