FSA
Hammer 1.1/8" Headset

• 1-1/8,For BMX / Freeride
• 12mm Deep Cup design
• Nylon top cover & plastic seal
• Forged and CNC machined steel cups
• Upper : Ø5/32x20 caged ball bearings
• Lower : Oversized Ø3/16x20B caged ball bearings
• Stack Height 12.3+11.9=24.2mm

Spares:

Top Bearing: MR013
Bottom Bearing: MR002
Crown Race: H6010