Ritchey Comp Streem Drop Handlebar - Aluminum 40cm 31.8mm BlackRitchey Comp Streem Drop Handlebar 40cm 31. 8 clamp Black. The Ritchey Comp Streem bar is as effective in the lead out train as it is in the final turns of bell lap. With a comfortable and generous top section for long rugged miles and an anatomical shallow drop Streem is a great choice for any drop bar build. Now with ports for Di2 cable routing. Drilled at bar end for Shimano Di2 EW RS910 junction box routing C260 compatible Double butted 6061 alloy