16° backsweep for a straight arm-to-hand transition, reducing strain on elbows and shoulders
10 mm forward flex to counteract stem shortening and improve comfort on rough terrain
5° upsweep for optimal elbow position during dynamic riding
Precision-molded aluminum construction for durability and lightweight performance
Adjustable clamp width (31.8 mm) and riser (15, 25, 50 mm) for personalized fit
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Ergo
Yep, they do look strange - but I bet your elbows are not laughing writhing in pain with golfers & tennis elbow. Bars that are too wide and straight will put extra torque on your elbows and shoulders.
The 311 series is a little bit more of a lighter weight version of the 3Ox but in 16º sweep only. It's recommended for XC, Trail