ACROS Bearingset for IS42 / IS52 Headsets

Two replacement heatset bearings for fully integrated headsets (IS). The IS42/IS52 bearing set consists of two stainless steel angular contact ball bearings for frames with 42mm bearing seat at the top and 52mm at the bottom of the head tube. A compatible compression ring with an integrated sealing for optimal protection of the headset bearing against moisture and dirt is also included. 

Technical data upper IS42 bearing

• Press-in diameter upper bearing: 41,8mm
• Height: 8mm
• 20g

Technical data lower IS52 bearing

• Press-in diameter lower bearing: 52mm
• Height: 7mm
• 30g