Zero Stack Headsets - Upgrade Bikes

Zero Stack Headsets

Zero Stack Headsets from Upgrade Bike Upgrade - Headset - Zero Stack

• Ø56mm OD aluminium lower cup with Ø51.9mm ACB sealed cartridge bearing
• Ø44mm OD aluminium upper cup with Ø41mm ACB sealed cartridge bearing
• Low profile 5mm top cap to reduce stem height
• Includes 1 1/8” star nut with stem cap and bolt

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