Electric-Assist¶

• Mid-Drive Kits:
• Bafang BBSHD/BBS02: Requires dropouts to be heat-treated; chainstay will need clearance.

• TQ HPR50: High-torque, long battery life, but expensive.

• Hub-Drive Kits:

• Front Hub Motor (100 mm spacing): easiest, keeps rear end stock.
• Rear Hub Motor (135 mm spacing): easy, but adds unsprung weight; use a 26″ fat-bike rim.
• Battery Placement: Use a frame-bag or rear rack mount to keep the center of gravity low.

Battery Options¶

• 48 V 14 Ah (long range, heavy)
• 36 V 10 Ah (lighter, shorter range)

Tip: Many people run mid-drive with a 1×11 or 1×12 to balance motor torque and gear range.