The Fatfish Biggie Bottom Bracket is the genuine replacement part that keeps your Biggie fat tyre e-bike running smoothly. It sits at the core of the frame and houses the spindle and bearings that allow the cranks and pedals to rotate freely.

On an electric bike like the Biggie, the bottom bracket has an important job. It carries the extra torque from the motor and ensures each pedal stroke feels smooth and efficient. A fresh replacement brings back the solid and responsive pedalling feel you expect from your Biggie.

• Smooth pedal rotation with reduced friction
• Designed to handle the additional torque of the Biggie motor
• Helps maintain efficient power transfer from rider to drivetrain
• Protects other drivetrain parts from unnecessary wear

• Pedals feel rough or stiff when turning
• Clicking or creaking sounds from the crank area
• Looseness or play in the crankset while pedalling

This is the official bottom bracket replacement for the Fatfish Biggie. Strong, durable, and made to last, it keeps your fat-tyre e-bike performing at its best on the road and off it.