The Trek Madone SLR with IsoFlow. It’s officially launched. The refined aero Kammtail shape pairs with a flared integrated bar/stem. The frame is 300 grams lighter and 20 watts faster.
Instead of air getting dirty between your legs, it flows through the downtube and out behind you. Less discussed in the dramatic frame design is the raised bottom bracket area and how tightly spaced the bottle cages are. The seatpost binder is hidden too.
Watch the film below and see the bike here.
Like the IsoSpeed and IsoStrut I expect skepticism at first and then, “Oh, yeah it totally works.” Trek isn’t saying how much the IsoFlow area flexes, but from the video it’s enough to take the edge off a harsh bump. Also, unless at your thinnest and maximum power to weight ratio, put on Spanx under your control top bib shots before swinging a leg over the top tube and grabbing the integrated handlebar.
A Few IsoFlow Notes
- This Madone is only compatible with electronic drivetrains
- The max tire size is 28c
- Brakes are flat mount with a 160mm rotor rear and 140 front
- Project One customisation is coming at a later date
- T47 BB
- No internal storage or fender mounts
- Compatible with Trek’s various accessories
- IsoFlow is not adjustable.
A frameset sells for $4599 and builds range from $7 to $13K.
Finally, props to Trek for the industrial design of the all-new Madone SLR. I’m not into aero road anymore, but can’t ignore what they’ve brought to market. This is the bike I predict will get me off gravel, the mountain, and back to road.
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