SRAM's Apex DoubleTap Control Lever allows you to shift from the hoods, drops, and even when sprinting, so you can always select the perfect gear with ease. The single-lever-shifting design allows for fast, smooth shifts and is completely independent of the brake levers, eliminating the possibility of engaging the brakes when you shift. Plus, the ergonomic levers are incredibly light, aero, and hide all the cables for an ultra-clean look.

Shimano ST-EF500 shift/brake lever provide an ergonomic, integrated solution for both brake and shifting controls. - Optical gear display - Adjustable reach - 4-Finger lever, compatible with cantilever, roller, linear-pull, and mechanical disc brakes

Shimano Ultegra ST-R8020 mechanical shift and hydraulic brake dual control lever and BR-R8070 flat-mount brake caliper. This dual control lever features Servowave brake lever technology, making initial pad travel very fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control. - The double hydraulic brake/mechanical shift lever is equipped with a reach adjust mechanism, meaning the distance from the handlebar grip to the lever can be adjusted to suit any hand size - Servowave brake technology means instant response and maximum modulation. - The Ultegra BR-R8070 flat-mount caliper is designed with one way bleeding technology which prevents air from entering the system and is easy and clean to maintain - Caliper also features Shimano's Ice Technology to reduce heat buildup for constant, stable braking

The Shimano Tiagra ST-4725 Dual Control Levers bring the all-conditions confidence of hydraulic disc brakes and refined ergonomics to the quick and intuitive shifting cyclists expect from Shimano Tiagra. - Dedicated lever for riders with smaller hands with smaller lever size and new positioning for improved ergonomics - Smooth and effortless operation - Redesigned internal shifting unit - Greater confidence and control for riders with smaller hands in all conditions - Quick and intuitive rear shifting operation - Same level of shifting operation as high-end road groupsets