Coefficient RR - Road Race Carbon Handlebar - Top Down View
Coefficient RR - Road Race Carbon Handlebar - Frontal View
Coefficient RR - Road Race Carbon Handlebar - Frontal Side View
Coefficient RR (Road Race) Carbon Handlebar
Evan Pardi testing the Coefficient RR bars

Coefficient RR (Road Race) Carbon Handlebar

Bikerumor Editors Choice

The Coefficient RR handlebar is purpose-built for riders that race frequently on pavement and/or gravel.​

Free computer mount included with every RR. Please select below.

Please also add accessories as desired.

4 of this size left in stock


Note: Stock is held in the UK. European orders can be fulfilled but will incur additional fees for duty and shipping - please contact us on for a quote.

Ideally Suited For: 

The RR's patent pending integrated computer bridge is not just a perch for your favourite data capturing gizmo, it offers hand placement options to powerfully and comfortably lift you over a steep climb AND/OR stretch-out and narrow-up to bridge a gap or breakaway from the pack. Designed within UCI and ITU rules, the RR will change your cycling experience for the better.

Both the AR and RR feature Coefficient aero-ergonomics that make it easier to ride faster on the noon ride or an all-day ride. With a deeper drop and increased rigidity, the RR promotes a more aggressive, aerodynamic riding position. Our patented Coefficient SWOPE (sloping, sweeping bar tops) carries over from the AR to relax your upper body and improve respiratory and neuromuscular function.

The RR Bar is Shimano Di2 compatible. It not only accepts the bar end junction, it includes exit holes for remote shifter buttons in four locations (2 each side) on the underside of the tops.

Computer Compatibility

In partnership with Bar Fly Bike, the Coefficient RR includes your choice of the following cycling computer mounts: Garmin, Wahoo, Lezyne, Polar, Cateye, Bryton, Joule, Hammerhead, Magellan and Mio. We also offer a GoPro camera mount that attaches to the underside of the computer bridge. Replacement mounts can be ordered as well.

Lightweight Materials & Dependability

When comparing handlebar weights keep in mind that the average off-the-front computer mount weighs in at 30 to 40 grams. The Coefficient RR is moulded using Toray unidirectional carbon fibre and tested to the highest ISO international standards for professional road and mountain bike racing.

Ride Media's Impressions

Proportional Sizing & Specifications

Available Sizes (C to C)38cm40cm42cm44cm
Clamp Diameter31.8mm
SWOPE (sweep + slope)Sweep: 12 degrees  /  Slope 15 degrees
Flare7 degrees
Drop Width (C to C)40cm42cm44cm46cm
Stem to Computer (C to C)87mm
Clamp Area Width56mm
Aero Top Width43mm45mm47mm49mm
Weight (grams)310315320325

Installation Instructions


* Please Note: GPS Unit shown in photography is not included with the Coefficient RR.