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 SRAM's GapCap for an aesthetically pleasing integrated look. The crank arm GapCap is removable for compatibility with other ISIS spindle-based motor systems. Specs: Crank Arm Length: 150mm, 155mm, 160mm, 165mm, 170mm BB Spindle Interface: ISIS Weight: 490 grams (160mm) Model ID: FC-90-PA-A1