Wolf Tooth GeoShift Performance Angle Headset - 1 Deg Short ZS44/EC49 Black CheckoutTitle=RockShox Lower Leg - 29/27.5+ Traditional BB30 (typically pre-2014) and

Traditional BB30 (typically pre-2014) and Specialized FACT crank sets will have a spindle that is too short for the frame shell

For use with Shimano XTR M9100 series cranksets

Flange No Color Midsummer Blue Length 136 Defined Color Blue Grip Shift Specific No Shape Round Weight 135 Lock On Yes

2mm color silver package 250/bottle

Wolf Tooth GeoShift Performance Angle Headset - 1 Deg Short ZS44/EC49 Black CheckoutTitle=RockShox Lower Leg - 29/27.5+ Traditional BB30 (typically pre-2014) andWolf Tooth GeoShift Performance Angle Headset 1 Deg Short ZS44 EC49 Black. The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker