TK14-OS 

．Length - 165mm, 167.5mm, 170mm, 172.5mm, 175mm
．BCD - 144mm
．Chainring - C1: 7075 CNC 42T, 43T, 44T, 45T, 46T, 47T, 48T, 49T, 50T, 51T, 52T, 53T, 54T, 55T 
                        P1: 6061 Press 42T, 43T, 44T, 45T, 46T, 47T, 48T, 49T, 50T, 51T, 52T, 53T
．Chainring Finish - Black, Ti, Silver Anodized 
．Chainline - 43mm
．Compatibility - 1/2"x1/8" & 1/2"x3/32" chain
．Crank Finish - Forged Alloy 6061/T6, High-polish Ti, Silver, Black Anodized
．BB Cups - BC-1.37x24/68-73mm
．BB Axle - Cromoly SCM435