absoluteBLACK Direct Mount Narrow Wide Chainring - SRAM Direct Mount - 3mm Boost - Round - Black - 9-12 Speed - 34T YGroup_7033828343853 11 speed - 11-48T:

11 speed - 11-48T:

7075 T6 Aluminium

Pros: Keeps your helmet fitting correctly

​Please note:  The easiest way to determine whether you have an A1 or A2 is to check the adjuster knob

absoluteBLACK Direct Mount Narrow Wide Chainring - SRAM Direct Mount - 3mm Boost - Round - Black - 9-12 Speed - 34T YGroup_7033828343853 11 speed - 11-48T:absoluteBLACK is dedicated to producing the world's finest oval chainrings and were the first to crack the code to discover the correct shape and 'clocking' to make an oval chainring work. They learned how to maximize the part of the stroke where power is produced and minimize resistance where it isn't. The oval shape smooths the delivery of power throughout the pedal stroke and improves efficiency and energy conservation. Many other brands have