Felt AR Advanced Ultegra DI2 vs Montague Allston

Frame	TeXtreme carbon fiber, MMC with InsideOut construction, carbon fiber BB386 bottom bracket shell, 12 x 142 mm Syntace style thru axle, flat mount disc brake standard, aluminum replaceable rear derailleur hanger, internal electronic-specific cable routing, and high-frequency vibration reducing seat post insert	6061 series aluminum with DirectConnect System. Seatstay splitter for belt drive and eccentric bottom bracket
Stem	AR integrated carbon with internal cable and hose routing -6¡ rise, ¯31.8 mm, 48 - 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm	Kalloy, Alloy direct connect. 15 degree rise
Handle Bar	Devox Carbon Aero, 80 mm reach, 125 mm drop, ¯31.8 mm, 48 - 54 cm: 400 mm, 56 - 61 cm: 420 mm	Riser style 20mm rise. 580mm wide. Alloy
Fork	Felt Aero Road UHC Advanced + TeXtreme carbon fiber monocoque construction, AeroTaper 1.125" - 1.25" carbon fiber steerer tube, integrated crown race, crown and blades. Flat mount disc standard, 12 x 100 mm thru axle	Full Cro-Mo, with disc mount and ramped dropout.
Seats	--	Full Cro-Mo, with disc mount and ramped dropout
Seatpost	Felt VariMount Aero Road UHC Advanced + TeXtreme carbon fiber with high-frequency vibration reducing insert, integrated battery holder, 350 mm length*, 0/20 mm offset *Seatpost can be cut to length	30.0 X 300mm Alloy with Montague logo
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	Gates 46T for belt drive. 170mm crank arm
Pedals	--	Platform trekking pedal. Aluminum Cage
Chain	Shimano 11-speed	--
Shifters	Shimano Ultegra Di2 R8070 11-speed	Shimano Alfine Rapid Fire trigger shifters
Saddle	Prologo Dimension T4.0	--
Headset	FSA integrated sealed cartridge bearings MR121 {870E-RS} Upper bearing and MR168 {970E-RS} lower bearing with integrated aero headset spacers and integrated top cover for use with non-integrated stem	--
Derailleur Front	Shimano Ultegra R8050 Di2 braze-on	--
Derailleur Rear	Shimano Ultegra R8050 Di2 11-speed short cage	Shimano Alfine 11-speed internal gear hub.
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 bladed	--
Cassette	Shimano 11-speed, 11-30T	--
Sprocket	--	Gates belt drive CDX sprocket. 24T

Front	Continental Grand Prix 5000 folding, 700 x 25c	Vee Rubber trekking tire. 700c x 38mm
Rear	Continental Grand Prix 5000 folding, 700 x 25c	Vee Rubber trekking tire. 700c x 38mm
Wheel / RIM	Reynolds AR58 DB Custom carbon, tubeless ready, 21 mm inner width, 58 mm depth	Spoke

Front	Shimano BR-R8070 hydraulic disc, 160 mm rotor	--
Rear	Shimano BR-R8070 hydraulic disc, 140 mm rotor	Shimano Deore hydraulic disc brake
Brake Lever	Shimano Ultegra R8070, hydraulic	Shimano Deore hydraulic disc brake

Front	--	--
Rear	--	--

Colors

Aquafresh / TeXtreme White / TeXtreme (Green)

Gloss Black/Red

Length	--	--
Weight	--	13.6 kg

Features	--	--
Additional Details	Bar Tape : Felt VelvetGel tape with 3 M reflective base with Felt Bubble-Tech F-Wing bar end plugs Bottom Bracket : Token BB386 with 24 mm bearings 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 161 (161L + 9 head = 170 total), thread: M12 x 1.0P x 18L, Syntace	Bottom Bracke : Sealed Cartridge Folded Size : 914 x 711 x 304 mm
Accessories	- Carbon assembly paste - Chain plate protector - Tubeless valve stems - Aero seatpost slot covers - Di2 battery charger - Headset top cover for use with non-integrated stem	--