Full Speed Ahead TH-857 Threadless Headset 7.6/25.9 Black Weight-212g The Tannus Armour sidewall helps

The Tannus Armour sidewall helps stabilize your tires on corners and cushion the ride for more comfort

Hood shape and texture optimize grip and brake power transmission Brake Lever Actuation Short Pull Super SLR Color Black Drivetrain Speeds 12 Includes Brake No Rear Der/Shifter Compatibility Shimano Road Di2

Direct Mount Type Direct Mount SRAM Tooth Count 32 Drivetrain Speeds 12 Drivetrain Speeds 11 Drivetrain Speeds 10 Defined Color Black Material Aluminum Offset 6 Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 150/157 DH Hubs Chainline/Hub Compatibility 170/177 Hubs

The Hayes Dominion T4 is optimized for Enduro and DH riding with a USA-made carbon lever blade titanium fasteners throughout and a strong-clamping 4-piston caliper

5mmBB Height 331

Full Speed Ahead TH-857 Threadless Headset 7.6/25.9 Black Weight-212g The Tannus Armour sidewall helpsTH 857 headset features and alloy top cover and forged steel cups. Alloy top cover Color Black Lower Stack Height 12. 6 Bearing Type Cup and Cone Crown Race 30 Defined Color Black Upper Stack Height 12. 9 S. H. I. S Upper EC34 S. H. I. S. Stem Clamp Diameter 28. 6 Threadless S. H. I. S Lower EC34