Shimano recently updated its least-expensive mountain bike components, the M610 group-better known as Deore. The new parts boast many of the same features and ride-improving technologies as the company's premium XTR, XT, and SLX parts.
Dyna-Sys specific cable-pull for (HG-X) 10-speed mountain drivetrain compatibility
Front shifter convertible between double-(2x) or triple-(3x) front 10sp drivetrains
2-way release trigger for thumb or finger actuation
Buy Shimano Deore M610 10 Speed Trigger Shifter from Chain Reaction Cycles, the world's largest online bicycle store.
Pair - Front & Rear - I-Spec, Pair - Front & Rear - Bar Mount