PRO Tharsis XC Stem 90mm -17° - 31.8mm - Black Car Racks Its CSI (Structural Carbon Integration)

Its CSI (Structural Carbon Integration) construction brings together the best of both worlds in carbon and aluminium construction

Exceeds ECE and DOT standards

Wireless connection enables adjustment of the multi-shift speed and synchro shift operation via computer

X-GlideR Chainrings

Max output: 6 bar / 87psi

PRO Tharsis XC Stem 90mm -17° - 31.8mm - Black Car Racks Its CSI (Structural Carbon Integration)PRO Tharsis XC Stem 90mm 17 31. 8mm Black The new Tharsis XC stem is the next evolution of headset design. Unique pinch bolt design with headset preload ring enable the headset to be adjusted without the need for a top cap or star nut leaving the fork steerer tube free to take an internal Di2 battery or simply as a method to save weight over a traditional system. The stem has been designed to take an SM JC41 Di2 junction box internally and is machined