Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") Nylon composite Bronze Series sole

Nylon composite Bronze Series sole

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

34mm outer diameter with plush cushioning throughout

but chafes under the restrictions of all the fingers bound together

Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") Nylon composite Bronze Series soleTrek 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