42T Lightweight Chainring 18.5mm Offset

A dedicated 42-tooth chainring crafted from high-grade aluminium alloy, weighing only 209g and featuring a consistent 18.5mm offset. Designed exclusively for seamless integration with BAFANG BBS01, BBS01B, BBS02 and BBS02B mid-drive e-bike motor systems. Its precise offset ensures proper chain alignment, minimising noise and wear. The chainring mounts directly to the motor’s crank spider using standard hardware. Minor visual variations may occur between manufacturing runs, but mechanical specifications and fitment remain unchanged across all units.