Fashionable highway bike shifters are integrated with the brake levers. The entire three major element producers (Shimano, sram guide and Campagnolo) have comparable types of shift/brake levers, although every one has a special really feel and inside mechanisms.
The latest development is toward single-lever, where the braking and shifting is achieved with one lever. The rider pulls on the lever to brake, and clicks the lever to the side once or twice depending on whether he wants to shift up or down. With traditional brake/shift levers, the rider pulls on the larger of the 2 levers to brake, and pushes either the massive or small lever toward the bike to shift.
Mountain bike shifters also are available in several varieties:
push-push,
push-pull, and
grip shift.
A push-push system uses shift levers on each handlebar, one for shifting up, the other for down – they are each thumb-activated, leaving the remainder of the fingers to grip the handlebar and brake lever.
A push-pull seems to be the same, but one of the levers may be operated as a push (thumb) or pull (forefinger). That is no more or less efficient, just personal preference.
Grip shifters (or twist shifters) use a twisting movement to shift, like motorcycle levers. Grip shifters are usually not very common among performance bikes because of how simple it’s to inadvertently shift while gripping the handlebars hard in a technical section.
Hybrid bikes typically come with mountain bike shifters, both in the lever types or twist-shift styles. Youngsters’ bikes usually have grip shifters because they require less manual dexterity to operate.
There are additionally tiny shifters that can be mounted on the ends of aerobars on time-trial bikes. These are shifters solely; the rider must move his hands to the outer bar to achieve the brake levers.
