ProTaper ATAC Stem - 70mm 31.8mm clamp Black/White Model=Two-Bolt Seatpost Versatility durability and performance designed

Versatility durability and performance designed for the gravel adventurer

200 pound rider weight limit

Load your tube like filling a taco and strap it to your frame anywhere using the included strap

Shimanos XTR M9120 Enduro-style hydraulic disc brake system increases brake rigidity for greater bike control and optimizes braking performance

ProTaper ATAC Stem - 70mm 31.8mm clamp Black/White Model=Two-Bolt Seatpost Versatility durability and performance designedProTaper ATAC Stem 70mm 31. 8mm clamp Black White. The ATAC is back. One of the oldest names in the high end stem game has returned. And this time its all blinged out with titanium hardware and a fresh laser etched finish. Aluminum construction with Titanium Hardware Rise: + 5 degrees Clamp Diameter: 31. 8mm TECH SPECS Bar Clamp Diameter (mm) 31. 8 Color Black White Defined Color Black Length 70 Material Aluminum S. H. I. S. Stem Clamp Diameter 28. 6