6061 aluminum is double-butted – meaning it’s thin-walled where saving weight is critical and thick-walled where strength is key. Size-specific backsweeps keep comfort and security constant over different widths. 20mm rise is perfect for regaining height lost when switching to a short, zero-rise stem. 5º rise combines with those tailored backsweeps to create a secure, comfortable and stable hand position whether you’re riding standing or seated.