SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel ModelNumber=E4577 supportive fit that won’t restrict

supportive fit that won’t restrict movement

model cagemount 2 description 22-38mm OD handlebar cage mount material composite/nylon color black weight -

These rings are for use with 110 BCD 5 arm cranksets

Incorporates Evo-Carcass U-Blocks and PaceStar Triple Compound

921g (with 30t and BB)

SRAM X-Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel ModelNumber=E4577 supportive fit that won’t restrictSRAM X Sync EX1 Sprocket Chainring for Bosch Motors 16T Straight Steel. The EX1 drive train was designed specifically for the demands of electric assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads. Liberal use of features found on SRAMs high end MTB parts provide high value quiet operation and ease of service. X Sync (wide narrow) tooth profiles for great chain management