These stunning shifters are packed with some of the finest Shimano technologies around such as Rapidfire Plus and 2-Way Release to give you excellent shifting performance at an affordable price. Engineered for rowdy off-road trail riding, they provide you with quicker lever access and light operation, so you can get the best out of every ride. Their instant push and pull movements make shifting smooth and precise, meaning you can spend less time thinking about shifting and more time enjoying the ride. Please Note: Each lever is sold separately in left or right I-Spec EV/Band On mounting options. Technologies: SIS: Shimano Indexed Shifting. It's the technology behind that "click" you hear and feel every time you shift through your gears. That "click" captures the light, precise, and consistent shifting bikes equipped with Shimano deliver. It's the sound of perfect gear changes, of levers directing derailleurs in harmony, and the feeling that resonates into your hand, letting you know that your commands are being answered. Whether you ride for fun, fitness, commuting, or competing - and on pavement or trail - Shimano S.I.S is a foundation of your cycling experience. 2-Way Release: The Rapidfire Plus shifter release lever is commonly called a trigger because it is operated like a pistol, by pulling toward the grip. The release lever of Rapidfire Plus shifters from Shimano Alivio to XTR can be operated in this same manner but adds the ability to activate a release shift by pushing with the thumb. Instant Release: Instant Release shifting replaces the two-stage click and release shifting you are familiar with. Instant Release shifting releases cable as soon the lever is activated, resulting in the quickest possible gear changes. Whether it is an upshift with a top normal rear derailleur or a downshift with low normal rear derailleur a quicker shift is always a better shift. Rapidfire Plus Mono: The Rapidfire Plus Mono lever provides intuitive and simple front control that empowers riders to shift both up and down with a single lightweight and compact lever. Simple and intuitive single lever operation, quicker access and lighter front shifting enhances concentration. Front double shifting with natural finger positioning supports intuitive shifting operation. Easy front shifting helps riders quickly and accurately respond to rapidly changing conditions. A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).