Author Voyage 2023 vs Felt IA Advanced Ultegra DI2

Frame	Alloy 6061 700c	Felt Integrated Aero Tri Disc UHC Advanced + TeXtreme carbon fiber, MMC with Inside Out construction, 68 mm BSA threaded bottom bracket shell, 12 x 142 mm with Syntace style thru axle, flat mount disc brake standard, horizontal dropouts, replaceable rear derailleur hanger, internal mechanical or electronic cable routing
Stem	Alloy	Felt Dagger 31.8 Cold Forged
Handle Bar	Alloy, 30 mm, 610 mm	Devox Bayonet 3.1 base bar with Devox Ergomod extensions, ¯31.8 mm, 48 - 51 cm: 390 mm, 54 - 58 cm: 420 mm
Fork	Hi-ten	Felt Dagger Disc UHC Advanced carbon fiber monocoque construction, 1.125" carbon fiber steerer, upper cover, blades, dropouts, crown; internal disc-brake routing, flat-mount disc brake standard, 12 x 100 mm thru axle
Seatpost	Alloy (27.2)	Felt VariMount Aero Tri UHC Advanced carbon fiber, 300 mm length
Grip	vinyl	--
Crankset	--	Shimano Ultegra R8000, 52/36T, 48 -51 cm: 165 mm, 54 -56 cm: 170 mm, 58 cm: 172.5 mm
Pedals	WELLGO Non Slip alloy	--
Chain	KMC Z1	Shimano 11-speed
Shifters	SHIMANO Nexus 3 (3)	Shimano Dura-Ace Di2 R9160 (aero extension) with right hand SW-R600 secondary shifter (base bar)
Saddle	AUTHOR King Sofa	ISM PS1.0
Headset	--	FSA integrated, 1.125" 36¡/45¡ sealed ACB cartridge bearings MR122 {873E-RS}, split top race H2145 {No.11AGY-2} with Felt compression device
Derailleur Front	--	Shimano Ultegra R8050 Di2 braze-on
Derailleur Rear	SHIMANO Nexus 3	Shimano Ultegra R8050 Di2 11-speed short cage
Hub Front	QUANDO, 32 holes	Reynolds Series 1, straight-pull design, 4 pawl, 24T ratchet, 11-speed XDR driver, 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	Steel 2.0 mm	Sapim Sprint bladed
Cassette	--	Shimano 11-speed, 11-28T
Bottom Bracket	VP COMP, cartridge	--

Front	CST Sensamo Speed 700 × 35c	Continental Grand Sport Race folding, 700 x 25c
Rear	CST Sensamo Speed 700 × 35c	Continental Grand Sport Race folding, 700 x 25c
Wheel / RIM	Alloy, 32 holes	Reynolds AR58/62 DB Custom carbon, tubeless ready, 21 mm inner width, 58 mm depth front, 62 mm depth rear

Front	PROMAX V	TRP HD-T910 hydraulic disc, 140 mm rotor
Rear	--	TRP HD-T910 hydraulic disc, 140 mm rotor
Brake Lever	PROMAX alloy	TRP HD-T910 hydraulic with integrated secondary shift buttons (right lever only)

Front	--	--
Rear	--	--

Colors

--

Matte TeXtreme (White Geo) Matte TeXtreme (Spatter, Gloss Charcoal)

Length	--	--
Weight	--	9.55 kg

Features	--	--
Additional Details	Size: 18", 20", 22" HEAD PARTS: VP COMP 1-1/8" CHAIN WHEEL : LASCO, 38 teeth, 170 mm cranks FREE WHEEL: SHIMANO Nexus 3	Bar tape : Devox Gel tape and new EVA arm pads with anti-microbial cover Bottom Bracket : Shimano Hollowtech BSA threaded Seatpost Clamp : Felt Internaloc integrated with titanium bolts Thru axle : Front: 12 x 100 x 118, thread: M12 x 1.5P x 13L, Maxle; Rear: 12 x 142 x 163 (163L + 9 head = 172 total), thread: M12 x 1.0P x 19L, Syntace
Accessories	--	Carbon assembly paste, Aero seatpost slot covers, IA CALpac 2.0, Di2 Internal battery charger, IA BTSpac storage box, Tubeless valve stems