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Felt Bicycles FX Advanced+ GRX 800

Felt Bicycles FX Advanced+ GRX 800
  • Color: Aqua
  • Color: White
Size: Select size
Please select options Unavailable


The FX is a purebred race machine, created specifically for the rigors of the cyclocross racecourse. Its no-frills, the purpose-built design was developed for one thing: speed. Incredibly lightweight, stiff in all the right places, and unbelievably agile, the FX will elevate every racer’s performance. And that’s not an unsubstantiated claim by any means — the FX is a two-time winner of the cyclocross world championship in the ultra-competitive Elite Men’s division. So if it delivered the very best racer in the world to back-to-back rainbow jerseys, just think what it can do for you. The top step of the podium awaits. Go and take it.

Whether you’re racing for a rainbow jersey or just aiming to beat your buddies at the weekend slugfest, you need a bike that will elevate the results of all of the blood, sweat, and tears you put into training. The FX is that bike, and once you take it into the trenches with you, no other bike will compare.

- Felt Cyclocross UHC Advanced + TeXtreme carbon fiber frame and fork
- Shimano GRX800 1x11 drivetrain
- Shimano GRX810 hydraulic disc brakes
- Devox Variable Road Cx2.1 tubeless compatible wheels


Frame Felt Cyclocross UHC Advanced + TeXtreme carbon fiber, MMC with InsideOut construction, BB386 bottom bracket shell, Syntace style thru axle, shoulder friendly top tube, flat mount disc brake standard, replaceable rear derailleur hanger, internal mechanical or electronic cable routing
Fork Felt Cyclocross UHC Ultimate + TeXtreme carbon fiber monocoque construction, ControlTaper 1.125" - 1.5" carbon fiber steerer tube, integrated crown and blades. Flat mount disc standard
Headset FSA integrated sealed cartridge bearing with Felt VariableHeight Cone Spacers (20mm PC, 4.5mm aluminum), Felt top cap and aluminum bolt, No.42, 1.125 - 1.5"
Axles Front: 12 x 100mm thru-axle
Rear: 12 x 142mm thru-axle
Rims/Wheels Devox Variable Road Cx2.1, tubeless compatible 21mm inner width, 23mm depth
Hubs Devox RSL3D, sealed cartridge bearing, Center Lock, 28H
Spokes 2.0mm stainless steel
Tires Schwalbe X-One All Around MicroSkin TL-Easy, folding, 700 x 33c
Crankset Shimano GRX810, 47-50cm: 170mm, 53-55cm: 172.5mm, 57 - 60cm: 175mm
Chainrings 40T
Bottom Bracket Token BB386 with 24mm bearings
Chain Shimano 11-speed
Rear Derailleur Shimano GRX812, 11-speed long cage
Cassette/Rear Cogs Shimano 11-speed, 11-40T
Shifters Shimano GRX810, 1x11
Handlebars Devox Cross SL, drop: 126, reach: 70mm flare 8-deg, 31.8mm, 47 - 50cm: 400mm; 53 - 55cm: 420mm, 57-60cm: 440mm
Stem Devox SL, -7-deg rise, 31.8mm, 51cm: 90mm, 54 - 56cm: 100mm, 58cm: 110mm, 61cm: 120mm
Brake Levers Shimano GRX810, hydraulic
Brakes Shimano GRX810 hydraulic disc, flat mount, 140mm rotor
Saddle Prologo X0 T2.0
Seat Post Devox Lite Road, 27.2mm x 300mm length
Accessories & Extras Carbon assembly paste, chain plate protector

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Aqua / 47cm 840077011086 BBIAA37 000047
Aqua / 50cm 840077011093 BBIAA37 000050
Aqua / 53cm 840077011109 BBIAA37 000053
Aqua / 55cm 840077011116 BBIAA37 000055 210000007607
Aqua / 57cm 840077011123 BBIAA37 000057 210000007608
Aqua / 60cm 840077011130 BBIAA37 000060 210000008950
White / 47cm 840077011147 BBIAA38 000047
White / 50cm 840077011154 BBIAA38 000050
White / 53cm 840077011161 BBIAA38 000053 210000007609
White / 55cm 840077011178 BBIAA38 000055 210000008609
White / 57cm 840077011185 BBIAA38 000057
White / 60cm 840077011192 BBIAA38 000060