Ritchey WCS Carbon Matrix C220 Stem - 130mm 31.8 Clamp -6 1 1/8" Carbon Black. With the Ritchey WCS Carbon Matrix C220 Stem you really can have it all. Easy to install and remove thanks to a press-fit handlebar clamp interface and forward-facing hardware. The C220 handlebar clamp design creates a more secure interface by wrapping a full 220 degrees over the handlebar. Bolt forces are aligned with the clamp so that the stem body embraces the handlebar which is less prone to damaging lightweight bars. This clamp design allows for a lighter faceplate and stem body with no sacrifice in strength or stiffness.

Carbon Matrix stem body is forged 2014 aluminum with a stiffness-enhancing carbon exoskeleton which makes this 12% stiffer than the WCS alloy C220 stem