Reach and Tallboy solve different fit questions
Reach seats use a tapered nose and forward seating position to help shorter-inseam riders reach the ground and controls. Tallboy is intended to make more room: 52000640 is described as raising the rider one inch, while the earlier 52000252 moves the rider back 1.5 inches relative to its stated original seat. These measurements belong to those exact references. On the modern pair, Reach 52000638 lists a 13-inch rider area and 9-inch pillion; Tallboy 52000640 lists 16.5 and 15 inches. Models originally sold with a solo seat require hardware kit 52100065 for these two modern seats. Tallboy excludes adjustable-style rider backrests.