Diamondback came to Kona to introduce the world to Serios, their new TT bike. The Serios makes a very fine first impression and Diamondback tested the Serios against the Trek Speed Concept and the Cervelo P5 and said that they were very happy with the numbers of the bike designed by Kevin Quan. There are 3 complete bike models ranging from $3,000 to $8,000 and there is also a frame set option. Each of the models is available in 4 sizes, ranging from 50 to 58 and either in a TT or Triathlon configuration, with the TT one offering a lower stack height. Plus Diamondback offers 95, 105 and 115 stems for the Serios, and the bike can also be set up with a regular 1 1/8 stem, and with lots of fore and aft adjustment on the seatpost, the fit configurations are endless. The entry level Serios S has an MSRP of $3,000 and features the same frame as the more tricked out siblings, but we shall begin with the $8,000 Serios AF.

The Diamondback Serios AF looks right at home in Kona.

In order to fit a variety of folks, spacers below the stem allow the athlete to dial in the fit.

The frame is broader than various other design, but according to Diamondback that was done with specific tube shapes to increase performance without an aero penalty.

Up close with the rear triangle of the Diamondback Serios AF, and it is obvious that DB has a long relationship with Hed.

The Hed Corsair cockpit of the Serios AF.

A look at the Serios from the front shows clean lines except for the brake cable of that direct mounted brake.

The headtube is tapered and shaped.

The AF comes stock with an ISM Adamo Road.

The bike shown here is actually a prototype that served to show the TT bike setup. This option is as we said earlier available on all 3 models.

The frame of the Serios from slightly above. The Shimano Di2 battery of this bike hides inside the seatpost.

Diamondback decided against integrated front brakes for this bike.

There is space on the top tube for a storage solution.

The view from below shows the cable routing here.

Only the TT bars will sit that flush on the bike.

The Serios F is a $7,000 Shimano Ultegra Di2 bike.

All the Serios frames have the same features.

The Diamondback Serios S is the $3,000 entry level bike we mentioned earlier.

The bike was set up with a Diamondback branded storage top tube bag.

You want numbers? We give you numbers. The geometry charts of the Serios in the Triathlon configuration. Deduct 20mm stack for the TT version.

All images © Herbert Krabel / slowtwitch.com