Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") 34mm outer diameter with plush

34mm outer diameter with plush cushioning throughout

Fast Action Wicking: Pulls moisture away from skin

protecting paint and carbon frames)

Nylon composite Bronze Series sole

2-oz 79% recycled nylon/21% spandex power knit

Knock Block Headset Lockring Spacer Size:28.6 mm (1-1/8") 34mm outer diameter with plushTrek 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