The ultimate bottom bracket bearing. XD-15 uses an angular contact design to provide the perfet preload. Combined with the advanced lightweight nitrogen steel races and oversied grade 3 Cerbec ceramic balls, XD-15 is smoother and has a greater load capacity than any other bearing on the market.

• Bearing Code: MR1728
• Dimensions: 17 x 28 x 7mm
• ABEC: 5
• Grade: 3
• Seals: LLB
• Grease: Kyodo Yushi PS-2
• Application: Hubs, Bottom Brackets
• Weight: 10.76g