elgingoeswild Added a comment about bike check Specialized S-works Demo 8 Carbon Wheels. 4/16/2013 1:56am My body weight is 66kgs including gears and my bike is demo 8 carbon, is it ok to use ENVE 26 AM rims in downhill? What Hubs, spokes, spoke length did you use? This bike check has 7 comments.