Zipp SL Sprint Carbon Stem – 12 Deg
From the outset Zipp wanted to design the stiffest yet lightest stem they possibly could, and the result is the SL Sprint.
The stem weighs in at just 1.8g per newton meter of stiffness. How did they achieve that you ask? It was designed using SRAM’s Exogram technology, the same used in the ultra light and strong SRAM® RED cranks.
Whilst being extremely stiff, as proved on the pro circuit, the stem weighs in at just 165g (100mm length).