Felt FR Advanced Ultegra DI2 2020 vs KEYSTO KS671

Frame	Felt Race Road UHC Advanced + TeXtreme carbon fiber, MMC with Inside Out construction, carbon fiber BB386 bottom bracket shell, 12 x 142 mm Syntace style thru axle, flat mount disc brake standard, CNC aluminum replaceable rear derailleur hanger, external mechanical or internal electronic cable routing	26" Hi-Ten Steel Oversize Special-Shaped Tubes
Stem	Devox SL, -7¡ rise, ¯31.8 mm, 43 - 47 cm: 80 mm, 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm	--
Handle Bar	Devox Carbon Variable Shape, 65 mm reach, 125 mm drop, ¯31.8 mm, 43 - 47 cm: 38 cm, 51 cm: 40 cm, 54 - 56 cm: 420 mm, 58 - 61 cm: 440 mm	--
Fork	Felt Race Road UHC Advanced + TeXtreme carbon fiber monocoque construction, size specific Control Taper carbon fiber steerer tube, integrated crown race, crown and blades. Flat mount disc standard, 12 x 100 mm thru axle	26" Hi-Ten Steel
Seatpost	Devox UHC Performance carbon fiber with microadjust head, 43 - 51 cm: ¯27.2 mm x 294 mm length, 54 - 61 cm: ¯27.2 mm x 344 mm length	--
Crankset	Shimano Ultegra R8000, 52/36T, 48 cm: 165 mm, 51 cm: 170 mm, 54 - 56 cm: 172.5 mm, 58 - 61 cm: 175 mm	--
Chain	Shimano 11-speed	KMC
Shifters	Shimano Ultegra Di2 R8070 11-speed	SRD46
Saddle	Prologo Dimension T4.0	--
Headset	FSA integrated sealed cartridge bearing with Felt Variable Height Cone Spacers (20 mm PC, 4.5 mm aluminum), Felt top cap, 43 - 47 cm: IS-21, 1.125", 51 - 54 cm: No.382, 1.125 - 1.25", 56 - 61 cm: No.42, 1.125 - 1.5"	--
Derailleur Front	Shimano Ultegra R8050 Di2 braze-on	--
Derailleur Rear	Shimano Ultegra R8050 Di2 11-speed short cage	RD-M200
Hub Front	Reynolds Series 1, straight-pull design, 4 pawl, 24T ratchet, 11-speed, 12 x 142 mm thru axle, Center Lock	--
Hub Rear	Reynolds Series 1, straight-pull design, 12 x 100 mm thru axle, Center Lock	--
Spoke	Sapim Sprint double butted	--
Cassette	Shimano 11-speed, 11-30T	--

Front	Vittoria Rubino Pro G+ folding, 700 x 25c	CST 26" x 4.0" 60TPI
Rear	Vittoria Rubino Pro G+ folding, 700 x 25c	CST 26" x 4.0" 60TPI
Wheel / RIM	Reynolds AR41 DB Custom carbon, tubeless ready, 21 mm inner width, 41 mm depth	Spoke

Front	Shimano BR-R8070 hydraulic disc, 160 mm rotor	Alloy Mechanical Disc
Rear	Shimano BR-R8070 hydraulic disc, 140 mm rotor	Alloy Mechanical Disc
Brake Lever	Shimano Ultegra R8070, hydraulic	--

Front	--	--
Rear	--	--

Colors

Aquafresh / Matte TeXtreme Plasma Red / TeXtreme

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Length	--	--
Weight	7.28 kg	--

Features	- Advanced-level frameset with TeXtreme carbon - Clearance for up to 28 mm tires - Electronic shifting and disc brakes	--
Additional Details	Bar Tape : Felt Velvet Gel tape with 3M reflective base with reflective Felt Bubble-Tech F-Wing bar end plugs Bottom Bracket : Token BB386 with 24 mm bearings Seatpost Clamp : Felt single bolt, ¯30.6 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	Chainwheel : CST 26"*4.0" 60TPI Wheel : 26" Alloy
Accessories	Carbon assembly paste Chain plate protector Tubeless valve stems Di2 battery charger	--