2012 Shimano XT *CLUTCH 1X10 Extended range!

This is the ultimate 10 speed drivetrain! -Super light cassette with extender cog gives 11-42T range! 423G only for cassette! -Upgraded Dyna SYS dual direciton direct mount shifter. Will attach to any shimano brakes with the 1 finger lever (mounts to the square hole on brake lever) You can double upshift and triple downshift with this derailleur! -XT rear derailleur with extended range and clutch! Clutch works great, stops chain slap, keeps your chain tight and engagement fast, and prevents chain from bouncing off gears during impact -Chain in great shape, no stretch