The new Shimano Deore XT Rapidfire Plus levers for the new Dyna-Sys 10-speed drivetrain technology.2-Way Release for different riding styles or shifting (indexfinger or thumb) from various riding positions. The upper lever still performs the same function, but now it swings both ways. Pull it with your finger or push it with your thumb - you choose. Two position bracket with the choice of inboard and outboard position. The Optical Gear Display floats above the handlebar, allowing you to set the suspension control lever clamp easily. The Optical Gear Display is removable, a lid cover comes together with this shifter. Instant Release allows for quicker shifts, as it instantly releases the cable when the trigger is activated. Note: Only compatible with 10-speed Dyna-Sys shifting components.