Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") protecting paint and carbon frames)

protecting paint and carbon frames)

The skinny: Mason is a traditionally masculine name and its origin as ‘one who works with stone’

easy-wearing

Nylon composite Bronze Series sole

Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") protecting paint and carbon frames)Trek Knock Block Headset Lockring Spacer Genuine replacement parts Service and replacement parts specifically for Trek Knock Block Technology. Product details For locking steer tube to the headset bearing cover and frame chip Only for use with Trek Knock Block systems Specifications Model Trek Knock Block Lockring Spacer Steerer outer diameter 28. 6mm (1 1 8") Thickness 10mm