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WCS Carbon Streem Handlebar



Informed by a history of countless race wins and built from a lifetime of experiences, the Carbon Streem is a lightweight and aerodynamic handlebar that combines unmatched performance with an incredible ride experience. The Carbon Streem II features an extremely aggressive wing-shaped top section that saves watts while offering an incredibly comfortable hand position for cruising uphill. A partially covered internal groove on the underside of the tops allows for cleaner cable routing, and the compact drops feature a traditional bend - the choice of many Ritchey-sponsored pro riders from the pro peloton to elite cyclocross racers. 

  • UCI compliant 43.5x16mm wing-shaped top section cuts through the wind 
  • Gentle sweep to tops and broad platform – great for seated climbing 
  • Internal cable groove-no need to tape all the way to the stem 
  • No-slip grit at stem and brake lever clamp areas 
  • Drilled at bar end for Shimano Di2 EW-RS910 junction box routing 

Tech Specs

Materialcarbon fiber
Bend shapetraditional
Top sectionaero
Width40, 42, 44cm

40cm = 124/70mm
42cm = 126/70mm
44cm = 128/70mm
Flare out
Clamp diameter31.8mm
Accessory mount diameter31.8mm
Clip-on compatibilityno
Lever/shifter torque5Nm (recommended)
Stem clamp torque5Nm (max)
Weight235g (42cm)
Colormatte UD carbon finish
Compatible with Shimano EW-RS910 junction box

Logic Features

aero top

Aero Top

Wide, thin, and flat top shape for pure aerodynamics and the highest level of performance.

internal cable groove

Internal Cable Groove

A partially covered internal groove on underside of tops allows for cleaner cable routing.

Tech Drawing

  • Design

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