Top Section


Bottom Section

Felt IA Advanced Disc Ultegra Triathlon Bike 2021

  • Felt's IA Triathlon bike has won Kona the past 6 consecutive yrs & holds the bike course record
  • Featuring TeXtreme Carbon Fibre provides a strong and stiff yet also light and agile frameset
  • Designed to be size specific for incredible handling, efficient pedalling and optimised comfort
  • Fitted with a Shimano Ultegra groupset created for a reliable & smooth riding/racing experience




CALL US: +44 (0)1323 417071

Not available to buy from outside the EU This item is NOT available outside the EU



More from

 » Bikes » Triathlon & TT

Product Information

Felt IA Advanced Disc Ultegra Triathlon Bike 2021

Felt's IA Triathlon Bike has won the Kona World Championship for the past 6 consecutive years as well as holding multiple full and 70.3 bike course world records such as across the lava fields of Hawaii. The IA Advanced is one of the most aerodynamic triathlon bikes in the world that's made from a variety of different carbons. The main fibre used is Ultra Hybrid Carbon which is renowned for its stiffness, improving your pedalling efficiency dramatically and providing great handling. The Felt IA Advanced also incorporates TeXtreme carbon fibre which provides the frame with a strong and durable base as well as keeping it super lightweight with no gram spared. Felt also ensured your comfort is optimised while performing at your best by featuring size-specific geometry. With five different IA frame sizes that are all tailored with specific sizing, you benefit from great handling as well as efficient pedalling. This Felt IA Advanced is fitted with a Shimano Ultegra groupset which gives you both reliable and smooth shifting to keep your performance at it's best. Equipped with hydraulic disc brakes allows you to take your descending to the next level on challenging courses as well as being able to stop quicker in the wet. To meet your triathlon needs, the Felt IA Advanced comes with two storage units; the BTSpac and CALpac 2.0. The BTSpac is great for your puncher repair kit as it sits just behind your seat tube whilst the CALpac 2.0 storage module has been integrated into the top tube to allow for a quick and easy nutrition fix. The Felt IA Advanced Disc Ultegra model is ready to take your racing to the next level. 

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 R8000, short cage

Front Derailleur - Shimano Ultegra R8000, braze-on

Shifters - microSHIFT A11, 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 disc, flat mount



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 EVA arm pads with anti-microbial cover and Felt Gel tape

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