Full Speed Ahead NO.55R/57-A Headset - For 62mm OD Head tube, 1.5" w/TH-874-1, Anodized Black

The Full Speed Ahead NO.55R/57-A is designed for use with 62mm outside diameter head tubes and features high performance 1.5" Angular Contact Bearings (ACB) with black seals.

• For use with 62mm outside diameter head tubes
• Designed for 1-1/8" to 1-1/2" tapered forks
• Aluminum top cover
• 1.5" angular contact bearings provide smooth movement while the black seals offer protection from the elements
• Compatible with Intense M1 frames

• S.H.I.S Upper: ZS56
• S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
• S.H.I.S Lower: ZS56
• Color: Black
• Crown Race: 40
• Bearing Type: ACB
• Defined Color: Black
• keyword search: Intense M1