Coefficient Cycling reveals aerodynamic analysis of RR handlebar

Coefficient Cycling visited the San Diego Wind Tunnel on 26th February to gather scientific evidence that its handlebar designs improve rider and bike aerodynamics.

Cycling aerodynamicist Aaron Ross developed the protocols, managed wind tunnel testing, tabulated the results and wrote the conclusion. This analysis looks closely at how the Coefficient RR handlebar improves a cyclist’s aerodynamic position. Two handlebars were evaluated: the Zipp SL70 Aero and Coefficient RR. Professional cyclists Chloe Woodruff and Evan Pardi participated as test riders. Component-only test results are shared as well.

The complete aerodynamic analysis, including how the Coefficient RR compares to the Zipp SL70 Aero, can be viewed as a PDF here.

Coefficient Cycling handlebars optimise real-world performance by blending rider comfort, metabolic efficiency and aerodynamics. A subsequent paper, scheduled for release later this year, will focus on metabolic efficiency to complete the RR handlebar ergo-aero benefits analysis.

Dealer enquiries are welcome. RR is in stock now in the UK. For more information, visit

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