.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}SRAM Eagle 90 Ebike Crankarm - 160mm ISIS Brose Cap Black. The Eagle 90 Transmission E-MTB crank is a sleek sturdy answer to a growing demand for robust and aesthetically pleasing components. This unique design is forged from aluminum for robustness and dependability without compromising weight. Select E-MTB motors pair with our GapCap for an aesthetically pleasing integrated look. Crank arm GapGap removeable for compatibility with other ISIS spindle-based motor systems.