Naturally there's a full complement of mounting points, with
bosses fitted to the top tube and under the down tube as well as
multi-position bottle mounts. Like the alu model there is also a
clever removeable mudguard bridge, keeping things clean and tidy
when not required.
Cables are internally routed, and run in integrated channels
which keeps buzz and slap to a minimum as well as making
replacement a doddle. Dropper posts are really starting to make an
impact on the drop-bar gravel/adventure scene now, and we're
pleased to see that there's provision for an internally routed
Interestingly all the models in the 2020 range come with 2x
drivetrains, although there's nothing to stop you changing to 1x
later should you prefer, and all come with hydraulic disc brakes as
Cannondale have chosen 700c and 37mm wide tyres for their
standard builds, but there's clearance for up to 40mm if you want
some extra cushioning. The Topstone will also happily accept 650b
wheels with up to 48mm wide tyres.
The geometry is intended to strike a balance between road
performance and off-road handling, with a notably large fork offset
giving a longer wheelbase for added stability and reducing the
chances of toe overlap on smaller frame sizes (something that can
sometimes be an issue on more cyclocross-derived bikes).
The only thing we're a little disappointed to see is that
there's a PressFit 30 bottom bracket. The Alu model has a threaded
BB, which is our preferred choice for longevity and ease of
maintenance on a bike that'll be ridden in all conditions. But this
is hardly a dealbreaker.