Trek Knock Block Headset Lockring Spacer

Trek proprietary headset components compatible with Trek Knock Block models.

Genuine replacement parts
Service and replacement parts specifically for Trek Knock Block Technology

Product details
- Trek proprietary headset components compatible with Trek Knock Block models
- For locking steer tube to the headset bearing cover and frame chip

Specifications
Steerer outer diameter: 28.6mm(1-1/")
Thickness: 10mm