This Blocklock Crown Race enables the secure mounting of forks with a 1.8“ steerer tube diameter on frames with a ZS66 Blocklock headset. Particularly practical: this headset bottom allows you to easily switch between different steerer tube standards – for example, from an original 1.5” fork to a fork with a 1.8" steerer tube. The steering angle possible with this fork cone is 150°. 

⦁ Crown race (SD): 45,8mm / 1.8"

⦁ Rotation Stop: 150°

⦁ Weight: 19g