Park Tool CRC-1 Crown Race Cutting Tool carted The Shimano 105 Di2 ST-R7170

The Shimano 105 Di2 ST-R7170 Disc Brake 12 Speed Shifter brings Di2 electronic shifting to 105 for the first time

Built for the long haul

PostmountMax

Light and durable WTB ST i30 Tough rims

Park Tool CRC-1 Crown Race Cutting Tool carted The Shimano 105 Di2 ST-R7170To ensure proper headset performance and longevity, special attention must be given to accurately machine the forks crown race seat. The CRC 1 is a professional quality tool for machining both the outer edge and lower surfaces of the crown race seat. Its unique adjusting system allows a tight fit of the tool onto any threaded or unthreaded fork even forks with externally butted steerer tubes ensuring a smooth, accurate cut and proper alignment of the