FSA
CK-758 ISIS 30.5mm E-Bike Crankarms

• Forged AL6061/T6 crank arms.
• Length: 155, 165mm.
• ISIS Drive.
• Anodized black, laser graphics.
• Weight: 477g (pair).

QFactor is the distance between the outsides of the crank arms. Clearance is the distance between the insides of the crank arms. Please make sure the clearance is wider than the width of your bike's chainstays.

Motor:QFactor - Clearance
Bosch G4 (ISIS): 130mm - 102mm
Brose MAG (ISIS): 144mm - 116mm
Yamaha PW-X2 (ISIS): 121mm - 93mm
Fazua (ISIS): 129mm - 101mm
Nidec (ISIS): 138mm - 110mm
Polini 137 (ISIS): 131mm - 103mm
Polini 144 (ISIS): 138mm - 110mm
SACHS (ISIS): 129mm - 101mm