FSA CK-320 Crank Arms for Bosch Gen3 Mini-ISIS

The FSA CK-320 crank arms are designed for e-bikes with a Bosch BNI Generation 3 motor and Mini-ISIS spindle. Made from die-cast aluminium, they come in three lengths.

• Fit only Bosch BNI Generation 3 with a Mini-ISIS spindle, not standard ISIS
• Die-cast aluminium with a black bead-blasted finish
• Weigh 505 g per pair
• Pedal fitting with 9/16" thread
• Choose the length: 160, 165 or 175 mm. Bolts are not included

Technical specifications

• Model: CK-320
• Compatibility: Only Bosch BNI Generation 3 / Mini-ISIS (requires a Mini-ISIS spindle, not standard ISIS; spline diameter approximately 18.3 mm)
• Material: Die-cast aluminium, black bead-blasted finish
• Weight: 505 g (pair)
• Crank arm length: 160 mm, 165 mm, 175 mm
• Pedal thread: 9/16"
• Package contents: 1 pair of FSA CK-320 crank arms (left and right), without crank arm bolts