Felt FX Advanced Plus GRX 800 vs Polygon Helios A7

Frame	Felt Cyclocross UHC Advanced + TeXtreme carbon fiber, MMC with Inside Out construction, BB386 bottom bracket shell, 12 x 142 mm Syntace style thru axle, shoulder friendly top tube, flat mount disc brake standard, replaceable rear derailleur hanger, internal mechanical or electronic cable routing	ACX Performance UCI Approved
Stem	Devox SL, -7¡ rise, ¯31.8 mm, 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm	FSA NS SMR, EXT: 90mm (XS, S) / 100mm (M, L) / 110mm (XL), BB: 31.8mm, R/D: 6degree
Handle Bar	Devox Cross SL, drop: 126, reach: 70 mm flare 8-deg, ¯31.8 mm, 47 - 50 cm: 400 mm; 53 - 55 cm: 420 mm, 57-60 cm: 440 mm	FSA Energy Compact, W: 400mm (XS, S) / 420mm (M, L) / 440mm (XL), BB: 31.8mm, R/D: 123.2mm, B/R
Fork	Felt Cyclocross UHC Ultimate + TeXtreme carbon fiber monocoque construction, Control Taper 1.125" - 1.5" carbon fiber steerer tube, integrated crown and blades. Flat mount disc standard, 12 x 100 mm thru axle	ACX Performance UCI Approved, Taper 1-1/8" TO 1-1/2"
Seatpost	Devox Lite Road, ¯27.2 mm x 300 mm length	Carbon, Aero 35 x 337mm (XS) / 357mm (S, M, L, XL)
Crankset	Shimano GRX810, 40T, 47-50 cm: 170 mm, 53-55 cm: 172.5 mm, 57 - 60 cm: 175 mm	SHIMANO 105 FC-R7000 52/36T, Crank Arm: 170mm (XS, S, M) / 172.5mm (L, XL)
Chain	Shimano 11-speed	SHIMANO CN-HG601-11
Shifters	Shimano GRX810, 1 x 11	SHIMANO 105 ST-R7020, 2x11-Speed DCL
Saddle	Prologo X0 T2.0	ENTITY FLUX2, CR-MO ø 7mm
Headset	FSA integrated sealed cartridge bearing with Felt Variable Height Cone Spacers (20 mm PC, 4.5 mm aluminum), Felt top cap and aluminum bolt, No.42, 1.125 - 1.5"	Integrated (IS) Sealed Bearing for OS Head Tube, IS 52/28.6 | IS 52/40
Derailleur Rear	Shimano GRX812, 11-speed long cage	SHIMANO 105 RD-R7000-SS Direct Attach
Hub Front	Devox RSL3D, sealed cartridge bearing, 11-speed, 12 x 142 mm thru axle, Center Lock, 28H	Alloy Thru Axle 12x100mm 24H Sealed Bearings Center Lock
Hub Rear	Devox RSL3D, sealed cartridge bearing, 12 x 100 mm thru axle, Center Lock, 28H	Alloy Thru Axle 12x142mm 24H Sealed Bearings Center Lock
Spoke	2.0 mm stainless steel	R: Stainless Straight Pull Butted NDS:279mm DS:277mm
Cassette	Shimano 11-speed, 11-40T	SHIMANO 105 CS-R7000-11 11-30T
Bottom Bracket	--	SHIMANO BB-RS500-PB

Front	Schwalbe X-One All Around MicroSkin TL-Easy, folding, 700 x 33c	SCHWALBE One ADDIX 700x28C
Rear	Schwalbe X-One All Around MicroSkin TL-Easy, folding, 700 x 33c	SCHWALBE One ADDIX 700x28C
Wheel / RIM	Devox Variable Road Cx2.1, tubeless compatible 21 mm inner width, 23 mm depth	Wheel Set: ENTITY WR3 Disc (30mm) W/ Tubeless Tape Installed Rim: Carbon 622-19 24H for Tyre 622-28/62 Disc Tubeless Ready

Front	Shimano GRX810 hydraulic disc, flat mount, 140 mm rotor	SHIMANO SM-RT70 160mm Rotor, SHIMANO 105 BR-R7070 Flat Caliper
Rear	Shimano GRX810 hydraulic disc, flat mount, 140 mm rotor	SHIMANO SM-RT70 140mm Rotor, SHIMANO 105 BR-R7070 Flat Caliper
Brake Lever	Shimano GRX810, hydraulic	SHIMANO 105 ST-R7020

Front	--	--
Rear	--	--

Colors

Satin Aquafresh / TeXtreme White / TeXtreme (Pattern)

Cobalt Blue

Length

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About	--	The Polygon Helios A7, featuring a UCI-approved ACX Performance frame and fork, offers precise Read More
Features	--	--
Additional Details	Bar Tape : Felt CxGel tape with Felt Bubble-Tech F-Wing bar end plugs Bottom Bracket : Token BB386 with 24 mm bearings Seatpost Clamp : Felt single bolt, ¯31.8 mm Thru Axles : Front: 12 x 100 x 123, thread: M12 x 1.5P x 16L, Maxle; Rear: 12 x 142 x 163 (163L + 7 head = 170 total), thread: M12 x 1.0P x 19L, Syntace	--
Accessories	Carbon assembly paste Chain plate protector	--