top tank rack. prior to fitting i locked all 4 bolts that are attached to the suction caps with blue tread locker and allowed several hours to dry.
next day followed by a generous amount of spit on all four caps i place the rack in position and pressed it down firmly.
following yesterday's hagon shock test run - today i checked it out. it's still on very firm.actually very very firm - no movement at all. if you grab the rack in the centre and pull sideways you can see the tank move but the rack stay rock solid.
in other words held on extremely tight. as for the life Span of the suction caps that's a different story but for $70 and i paid $50 postage it's a good nostalgic look for a period style bike.
plus you can throw away your gps and buy a map