BBB – SEMI-INTEGRATED / BHP-51 

The Integrated headset keeps your handlebar turning nice and smooth to make sure you can take every corner as tight as you want, and the durable sealed bearings makes sure you can keep doing that for a long time!

BHP-51:

• Zero Stack (ZS) / Semi-Integrated
• SHIS Lower - ZS44/30
• SHIS Upper - ZS44/28.6
• Sealed CrMO Bearings - 1 1/8" (41.0mm)
• Cone Spacer Diameter - 50mm
• Cone Spacer height - 8mm
• Crown race included
• Fork Size: 1 1/8"

BHP-53

• Zero Stack (ZS) / Semi-Integrated
• SHIS Lower - EC44/40
• SHIS Upper - ZS44/28.6
• Sealed CrMO Bearings - 1 1/8" - 1.5" (41.0mm - 51.8mm)
• Cone Spacer Diameter - 50mm
• Cone Spacer height - 15mm
• Crown race included
• Fork Size: 1 1/8" - 1 1/2"

BHP-54

• Zero Stack (ZS) / Semi-Integrated
• SHIS Lower - ZS56/40
• SHIS Upper - ZS44/28.6
• Sealed CrMO Bearings - 1 1/8" - 1.5" (41.0mm - 51.8mm)
• Cone Spacer Diameter - 50mm
• Cone Spacer height - 15mm
• Crown race included
• Fork Size: 1 1/8" - 1 1/2"

For more information on headsets please read this handy article: Buyer's Guide | Headsets - BBB Cycling