Includes shim for 28.6mm steerer tube. Shimano PRO CNC ATHERTONS DH MTB Bike Stem,0 Degree, 31.8 Threadless 50/65mm. Shimano PRO ATHERTONS Star Series DH Bike Stem,0 Degree, 31.8 x 50mm Threadless. Shimano PRO Thomas VANDERHAM Downhill DH MTB Bike Stem,0Deg,31.8x50mm Threadless.
