MR006 Bicycle Headset Bearing 40 x 51 x 6.5 mm 36° x 36° Compatible with Trek Madone Series 6 2010+ Series 5 2011+

Dimensions: 40 mm internal diameter, 51 mm external diameter, and 6.5 mm wide with a 36° x 36° chamfer. Compatibility: Fits Trek Madone 6-Series 2010+; 5-Series 2011+; 4 and 3-Series 2012+; and 7-Series 2013+. Smooth Steering: Ensures stable, low-friction performance for responsive bike control. Sealed Design: Protects against dirt, moisture, and debris for extended life. Application: Fits road bikes, mountain bikes, and balance bikes requiring MR006 specifications.