Revolutionary and exclusive hydraulic shifter/derailleur system for flat-bar (mtb) applications designed to provide lighter, faster, and longer-lasting performance compared to cable-actuated systems Maintenance free mineral oil system is capsulated for full protection from the elements and provides a linear shifting experience that balances up/downshifts CNC-machined aluminum and polymer construction with 29 independent thrust ball bearings and low-volume, small diameter tubing that uses similar space/routing to cable+housing Shifters use a single, thumb actuation paddle to provide lightning quick shifts (up to 3 gears in either direction) with a simple high/low push circuit and uses a removable, MatchMaker compatible back-clamp mount for easy handlebar positioning: 65g Rear derailleur comes in a medium cage length for up to 11-36t cassettes (43T capacity): 159g Front derailleur is 2x or 3x compatible via limit screws in a mid-clamp design that fits 34.9mm and 31.8/28.6mm seattubes with included shims (future models to accept conversion to E2/S3 or HO direct-mount with separate brackets). 79g