This is a BSR 3 speed hub converted to 6 speed with a Sturmey Archer ZHSA800 BWR driver. The BSR has tighter ratios and is more durable than the BWR ideal if you don't need a huge range and dislike the BWR's weird ratios. What you see in pictures is what will be sent All Brompton genuine parts used 3speed cable Hub gear anchorage Rear hub gear pulley assembly 3speed hub gear trigger Indicator (toggle)chain
