Yup it's huge . I remember ordering the Bob Jackson they recommended I get a22inch as I rode a 23.5 Road bike. It was great climbing , but murder descending had to stop and lower the seat with a spanner
Unvega's from around 92-98 particularly the Univega CB 6.3 and the Alpina 5.7 i aint seen either of them in yonks i would imagine the 6-3 was is the rarer of the 2