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Felt IA Advanced Disc Ultegra Di2 Triathlon Bike 2021

  • The Felt IA has won the Kona IM World Champs the past 6 yrs in a row & holds the course record
  • Designed with TeXtreme Carbon Fibre allows for a rigid & durable frame that's super lightweight
  • Equipped with a Shimano Ultegra Di2 groupset provides smooth & agile shifting when competing
  • Featuring a size-specific geometry optimises your pedalling efficiency & improves handling


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Product Information

Felt IA Advanced Disc Ultegra Di2 Triathlon Bike 2021

Felt has once again produced the Triathlon bike that destroyed the field at the Ironman Kona World Championships, adding a 6th title to their winning streak. Felt's IA Series has now not only won 6 years in a row but also holds multiple bike course records over both the full and 70.3 distances, including across the Hawaiian lava fields. As one of the most advanced and aerodynamic triathlon bikes in the world, Felt has to find unique ways to beat not only their own bikes but other competitors as well; that's why to create the IA Advanced they used a wide range of different carbons in order to optimise each area as much as possible. Ultra Hybrid Carbon is the main fibre featured which provides the frame with rigidity and stiffness that allows your pedalling efficiency to be optimised and ensure's the handling is incredible. Unique to the Felt IA Advanced is the incorporation of TeXtreme carbon fibre in order to provide strength as well as being reliable and durable and still maintain it's lightweight properties. The IA Triathlon Bike is also designed with size-specific geometry with five different frame sizes available to find one that keeps you comfortable whilst ensuring your performance stays at it's best by keeping your pedalling efficient and handling optimised. This model features Shimano's Ultegra Di2 groupset which takes your performance to the next level with agile and smooth shifting that's also reliable, taking your performance to some new personal bests. Fitted with hydraulic disc brakes allows you to go that much faster in your descents with the ability to control your speed much easier as they provide you with greater stopping power, making for a speed king or queen out on the course. And finally, Felt has ensured all your triathlon needs are met with two storage units built into the Felt IA Advanced. First of all, the IA features a BTSpac which is ideal for a puncher repair kit to be stored easily just behind your seat tube. Secondly, the CALpac 2.0 storage module which has been integrated into the top tube to make for quick access to nutrition as well as ensuring it doesn't impact your aerodynamics. If you're ready to take your racing to new heights of personal bests, the Felt IA Advanced Disc Ulterga Di2 model is ready for you.

Full Specification


The IA Series

The IA is the most aerodynamic triathlon bicycle in the world. It boasts a heretofore-unseen level of integration that offers a fit range to accommodate the needs of all athletes without sacrificing one gram of aerodynamic drag. But here's all you really need to know: The IA has propelled Felt athletes to victories at the Kona World Championship for a staggering six years in a row, including a bike course record.


Size Specific 

Felt has produced a thoroughly modern geometry that provides both agile steering and stability at speed. The IA comes in five different frame sizes, with each one receiving size-specific designs and constructions so that every athlete, no matter what size frame he or she rides, experience the same incredible handling, pedalling efficiency, and fit adjustability.



Two unique storage solutions provide room for all the gear you’ll need for any training ride or race: the BTSpac sits behind the seat tube and is ideal for a flat tire repair kit or other tools, while the CALpac 2.0 storage module is integrated along the top tube for quick access to nutrition products or anything else you want at your fingertips. IA models equipped with disc brakes, like the IA | Advanced model you see here, can accommodate tires up to 28mm wide (measured at the widest point, per ISO safety standards that call for 4mm of clearance on either side of the tire and the bicycle frame).



Frame - Felt IntegratedAero Disc | UHC Advanced + TeXtreme carbon fiber "MMC / InsideOut" Threaded | BSA 68mm Disc, Flat Mount | Ø140mm minimum

Fork - Felt IntegratedAero Dagger Disc | UHC Advanced + TeXtreme carbon fiber Monocoque construction / Integrated crown race Disc, Flat Mount | Ø140mm minimum

Seatpost - Felt AeroTRI IL 1.0 VM | UHC Advanced carbon fiber 0mm 300mm Integrated / Compliance Channels with aero covers / AeroTRI InternaLoc 1.0 seatpost clamping system / Patented VariMount (VM) saddle rail clamping system

Headset - IS (IS-2) Top Cap: stem integrated / Top Cover: stem integrated / Bearings: FSA integrated sealed cartridge, MR122 / Spacers: - / Compression Device: Felt for carbon steerer tube / Compression Ring: FSA H2145 / Crown Race: fork integrated

Bottom Bracket - Shimano BBR60



Wheels - Reynolds AR58/62 DB Custom, Shimano - Tubeless Ready Carbon

Tyres - Continental Grand Sport Race, 700x25

Thru Axels - TA 12x100 Devox AxleTA 123.2 | 118mm + 5.2mm head, M12 x 1.5P x 13mm, Switch lever compatible TA 12x142, horizontal Devox AxleTA 172-9 L | 163mm + 9mm head, M12 x P1.0 x 19mm for Syntace X-12, with SL02 Switch hollow lever



Crankset - Shimano Ultegra R8000, 52/36T "48, 51cm: 165mm / 54, 56cm: 170mm / 58cm: 172.5mm / 

Rear Derailleur - Shimano Ultegra R8050 Di2, short cage

Front Derailleur - Shimano Ultegra R8050 Di2, braze-on

Shifters - BaseBar: TRP HD-T910D, hydraulic with integrated Di2 shift buttons (right hand) / Extensions: Shimano Dura-Ace Di2 SW-R9160, TRI/TT

Cassette - Shimano Ultegra R8000, 11-28T

Chain - Shimano Ultegra HG701



Brake - TRP TR-25, Center Lock, 140mm

Brake Levers - TRP HD-T910D, hydraulic with integrated Di2 shift buttons (right hand)



Saddle - ISM PS1.0

Stem - Felt Dagger 31.8 Cold Forged

Handlebar -  BaseBar: Devox Bayonet 3.1 | SuperLite aluminum / Extensions: Devox Ergomod | aluminum 31.8mm - - 48, 51cm: 39cm / 54, 56, 58cm: 42cm

Tape - Felt Dagger 31.8 | SuperLite aluminum

Accessories - IA CALpac 2.0 Top Tube storage / IA BTSpac Seat Tube storage box / Shimano SM-BCR2 battery charger / Reynolds tubeless valve stems (2x75mm) / Compliance Channel aero seatpost covers / Carbon assembly paste



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