The Shimano Ultegra ST-6700-R right shifter marked a significant evolution in 10-speed road shifting, introducing internal cable routing for a cleaner cockpit and improved aerodynamics. Its carbon fiber-reinforced lever blade and graphite composite bracket body reduce weight while enhancing durability. The ergonomic design, featuring a slightly outward-canted lever, offers a more natural hand position and quicker shifting action. This shifter is optimized for use with Shimano 10-speed rear derailleurs, particularly the 6700 series, but also maintains compatibility with the 6600 series.

Functionally, the ST-6700-R allows for downshifting one, two, or three cogs at a time, while upshifting is limited to one cog per lever sweep. The lever’s pivot point has been adjusted to pull more cable at the beginning of the brake lever stroke, a feature reminiscent of Shimano’s Servo-Wave technology, enhancing braking power when paired with compatible calipers . However, some riders have noted that the hidden shift cables can introduce additional friction, potentially affecting the smoothness of rear shifting. The shifter balances lightweight construction with robust performance. Its reach can be adjusted using shims, accommodating a range of hand sizes.

Looking to enhance your 10-speed drivetrain with a blend of modern design and reliable performance? The Shimano Ultegra ST-6700-R shifter offers a compelling option for riders seeking to upgrade or replace their current setup.