Diamondback Series S & F Triathlon (Time Trial) Bikes: Reviews

andean-profile-700x449The Diamondback Serios line of triathlon/TT bikes was launched at the 2014 IRONMAN World Championships in Kona.

With a long history in the road-racing scene, Diamondback has the on-paper credentials to back up an entry into the tri realm, and its collaboration with HED Cycling and Kevin Quan (the designer of the successful Cervelo P3), adds even more street credibility to this bike.

Can’t Afford the new Diamondback Andean? Stay on Budget with a World Class Serios Series S & F Triathlon (Time Trial) Bikes. When looking for your next Triathlon bike or Time Trial bicycle, it can get expensive quick. Especially if you fall in love with the latest models, like the Diamondback Andean Aero-Core Tri Bike.

Budget World Class Serios Series S & F Triathlon (Time Trial) Bikes

While bikes like the Andean can cost anywhere from $4,800 in its basic form all the way up to $8,069.99, there are alternatives to owning a fast Diamondback Triathlon bike without having to spend so much.

Read also:

Diamondback Andean Triathlon/Time Trial Bike: Fastest “Superbike” in the World?

With similar drag elimination technology, quality frame materials, and comfortable setup, you can save hundreds, even thousands of dollars, on a world-class Tri bike from the same creators of the Andean. The trick is choosing a model that was built as a prototype for the Andean, which means it will contain similar, sleek technology and construction that you’re looking for. Except, these models won’t cost you an arm and a leg like the Andean “Superbike” will.

1. Diamondback Serios F Triathlon / Time Trial Bike


Diamondback Serios F
Triathlon / Time Trial Bike

  • Serios Carbon frame
  • HED corsair bar for Customization and Aerodynamics
  • Full Shimano Ultegra Di2 11Sp group
  • Highly customizable Cockpit
  • HED Jet 5 express wheelset

Read Verified Customer Reviews

Through a collaborative effort with renowned industry experts HED and KQ Studios, Diamondback was able to create ground-breaking bike profiles that incur only half the drag of competitor companies’ bikes. This bicycle model is not only excellent in wind tunnels, but it also outperforms all others on the road in crosswinds and corners.

The geometry allows the Serios F to maneuver well on hairpins and other circumstances that you’d encounter in a time trial or triathlon. The unidirectional carbon frame is light and efficient, thanks to the Serios F frame’s unidirectional design. It can fit every body type because of unique headset spacers, allowing the entire Rally pro team to be comfortable and focused on going faster than ever before.

  • Unidirectional carbon frameset
  • HED Corsair TT handlebar
  • Full Shimano Ultegra Di2 component set
  • HED Jet 6 Plus wheelset
  • Price

Technical Specification and Features

Available in sizes from 50cm to 58cm, the Serios F TT bike features a strong carbon frame that generates half of the drag as the competition. The bar sets the standards for customization and aerodynamics and the highly customizable cockpit ensures the best fit for every rider. WIth a lightweight and aerodynamic wheelset and Full Shimano Ultegra Di2 group, shifting is instantaneous. This Series F frame is a true centerpiece.

This model features the following specifications:

  • Frame Material: Full Carbon
  • Frame: Serios, UCI Certified, Aero TimeTrial Frameset, Unidirectional Carbon, 1-3/8 inch Tapered Headtube, Press-Fit 30 BB, Di2 Compatible Internal Cable Routing
  • Fork: Diamondback Serios Aero Time Trial Fork: Unidirectional Carbon, 1-3/8 inch Taper, Continuous Fiber Technology (CFT)
  • Cranks: Shimano Ultegra FC-6800, 53/39T
  • Bottom Bracket: PRAXIS PF30-Shimano Conversion
  • Front Derailleur: Shimano Ultegra Di2 FD-6870, Braze-on
  • Rear Derailleur: Shimano Ultegra Di2 RD-6870, 11 Speed
  • Shifter: Shimano Di2 SW-R671, Remote 2 Button Bar End Shifters
  • Brake Levers: Shimano Ultegra ST-6871 Di2
  • Brakes: Shimano Ultegra BR-6810 Di2
  • Cogset: Shimano Ultegra CS-6800, 11 Speed, 11-28T
  • Tires: Continental Grandprix 4000 S II. 700x23c
  • Rims: HED Jet 6 Plus
  • Pedals: Wellgo Alloy Road
  • Stem: DB Carbon TT with Full Custom HED Corsair Integration
  • Handlebar: HED Corsair TT, 42cm Flat, 31.88mm Bar Bore, with Carbon Lazy S Bend
  • Seatpost: DB TT Aero Carbon with Ritchey Seat Clamp
  • Seat: ISM Prologue with Cromoly Rails
  • Headset: FSA IS-2, 1-1/8 inch / 1-3/8 inch Tapered
  • Chain: Shimano HG701, 11 Speed
  • Front Hub: HED Jet 6 Plus, 18h
  • Rear Hub: HED Jet 6 Plus, 24h, Cassette
  • Spokes: HED Stainless Steel Bladed
  • Grips: EVA Cork with Gel
  • Extras: Manual, Serios User Guide, Extra FD Hanger, Century Bottle Cage, 2x/10mm Aero Headset Spacer, 2x/15mm Aero Headset Spacer, Custom DB Bento Box Bag.

The Serios F Triathlon Bike is available on Amazon. You cannot purchase it directly from Diamondback, but they are selling it through Amazon who is acting as a retail partner. The bike’s current retail price is 7000; however, you’re receiving a considerable discount off the original value. This bike was only recently released onto the market so take advantage of its cutting-edge specs and budget-friendly price while supplies last.

2. Diamondback Serios S Ready Ride Complete Carbon Triathlon/Time Trial Bike


serios-sDiamondback Serios S
Triathlon / Time Trial Bike

  • Full carbon Serios frame
  • Diamondback Serios Aero Fork
  • Designed in collaboration with KQ Studios
  • A complete professional quality TT bike for a fraction of the price

Read Verified Customer Reviews

The Diamondback Serios S Triathlon and Time Trial Bike is one of the greatest bikes available. The Full Carbon Serios Frame, which is a result of wind tunnel and real-world testing, is beautiful and innovative. This eye-catching design is aerodynamically efficient, lightweight, and minimizes drag that slows racers down.

The Andean is a professional-grade bike that was developed in collaboration with KQ Studios, the same people who created the Andean. You can be certain that this is a purchase that will take you to the next level and inspire you because it was designed and developed by experts in aerodynamics.

  • Unidirectional carbon frameset
  • HED Corsair TT handlebar
  • Full Shimano Ultegra Di2 component set
  • >HED Jet 6 Plus wheelset
  • Price


The Serios S sports the same advanced carbon frame and fork as its superbike siblings, hardly an entry TT bike model. A mix of different carbon fiber weaves give you the lightest and most responsive frame possible, giving nimble ride characteristics with plenty of solidity to back it up. The straight line speed of this bike is eclipsed only by its ability to corner at high speeds.

The Optum Pro team has road tested this bike to make sure it is comfortable for riders of all sizes, from 5’6″ to 6’4″. With full Shimano 105 components and HED wheels, you can be confident that your bike can keep up with the best of them.

The Diamondback Ready Ride Program is a new initiative that allows you to test drive your bike without having to assemble it. In a few simple steps, we’ll hand-build and ship your ride ready! Our program eliminates the time-consuming at-home assembly process, which is often neglected. Our bikes are built nearly through completion and sent straight to you. All you have to do now is attach the front wheel, sit on the saddle, and twist in the pedals. Yes, the brakes are adjusted correctly and the derailleurs are set: all you have to do now is inflate the tires and go!

Technical Specification and Features

The Ready Ride model requires less time to assemble and is ready to ride in just a few easy steps, making it the perfect choice for those looking for a next-level TT bike at an entry-level price.

The Specifications for the Serios S Ready Ride are as follows:

  • Frame: Serios Aero TimeTrial Frameset, Unidirectional Carbon, 1-3/8 inch Taper
  • Frame Material: Full Carbon
  • Speeds: 22
  • Fork: Diamondback Serios Aero Fork, Unidirectional Carbon (for lightweight responsiveness), 1-3/8 inch Taper
  • Cranks: Shimano 105, FC-5800 53/39T, 11sp
  • Bottom Bracket: PRAXIS PF30-Shimano Conversion
  • Front Derailleur: Shimano 105, FD-5800, 11sp, Braze-on
  • Rear Derailleur: Shimano 105, RD-5800, 11sp
  • Shifter: Shimano Dura Ace Bar End, SL-BSR1, 11sp
  • Brakes: Shimano 105, BR-5810 Direct Mount
  • Brake Levers: TRP 879
  • Cogset: Shimano 105, CS-5800 11sp, 11-25T
  • Rims: HED Flanders C2+, 20h/24h
  • Tires: Continental Ultra Sport II 700×23
  • Pedals: Resin Test Ride Pedal
  • Handlebar: Vision TriMax Base Bar 42cm w/TriMax Pro Aero Clip-on R-Bend
  • Stem: DB 3D Forged, 31.8mm, 7 degrees
  • Seat: ISM Prologue with Steel Rails
  • Seatpost: DB TT Aero Carbon with Ritchey Seat Clamp
  • Headset: FSA IS-2-138
  • Chain: KMC X11L
  • Front Hub: HED Sealed Cartridge 20h
  • Rear Hub: HED Sealed Cartridge 24h Cassette
  • Spokes: 14g Stainless Steel
  • Grips: DBR Race Tape with Gel
  • Weight: Approximately 39.8 lbs (Medium Size)
  • Extras (If purchased from Diamondback’s website): Front Derailleur Hanger, Rear Derailleur Hanger, 2x/10mm Aero Headset Spacer, 2x/15mm Aero Headset Spacer, Top Tube Gel Pack Bag

The Serios S Ready Ride is ideal for those looking for a bike to train on, complete time trials, and test their limits without having to pay an arm and a leg for other models. This is a professional-quality TT bike that will let you keep your costs in control.


The Serios S from Diamondback’s shop was originally priced at $3,500 but can now be found for as little as $1,500. This is an amazing deal compared to other retailers such as Amazon who are selling it for prices between $2,900 and $3,025. However depending on your size and budget you may have to wait a while since some sizes are currently out of stock in the Diamondback Shop.

Final Thoughts

Diamondback’s “Serios” Series Triathlon Bikes were the precursor to the Andean. They’re far better than anything else on the road, and you’ll save money so you can invest in better riding gear, upgrades you’re coveting, or even racing expenses. Of course, there are other bills to consider. But let’s look at two alternatives to the Andean that are amazing options.

If you’re looking for a high-quality bike to train on without the fancy bells and whistles of the Diamondback Andean’s $8,000+ end, read on.