BK-5063 - 5/32 (0.15625) Grade 5 Steel Balls - 50 pieces TH-873 The eleven-tooth upper and thirteen-tooth

The eleven-tooth upper and thirteen-tooth lower size and profile with 5mm bolt-holes are designed as an upgrade for most 11 and 12 speed Shimano GRX 2X rear derailleurs

specifically for older WTB 20mm hubs

This bearing has been used as a suspension pivot bearing almost exclusively by BMC Bikes

BK-5964 - 6

BK-5063 - 5/32 (0.15625) Grade 5 Steel Balls - 50 pieces TH-873 The eleven-tooth upper and thirteen-toothBK 5063 5 32 (0. 15625) Grade 5 Steel Balls 50 pieces Loose ball bike parts are still out there, so Enduro carries the loose balls you need to complete the job. Grade 5 balls meet or exceed 5 1,000,000 tolerance of sphericity and is considered extremely round, to the point that races can't be ground to match that level of precision. This is the same level of ball that is found in Enduro ABEC 5 bearings. Only a few years ago, Grade 25 would be