ProTaper ATAC Stem - 70mm 31.8mm Clamp +/-5 1 1/8" Aluminum Black/White MFPN=4558300 Wider and thicker nose for

Wider and thicker nose for better handling characteristics

Clean off any excess from painted surfaces immediately

Race proven

Two mounting arms are included for dialing in fit for various frame sizes (54-61cm size frames)

ProTaper ATAC Stem - 70mm 31.8mm Clamp +/-5 1 1/8" Aluminum Black/White MFPN=4558300 Wider and thicker nose forThe 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 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 Stem Angle (deg) 5 Edition Standard