Brompton C Line Explore Black - High vs Felt AR FRD Ultimate Dura-ACE DI2

Compare Specifications of Brompton C Line Explore Black - High and Felt AR FRD Ultimate Dura-ACE DI2

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Brompton C Line Explore Black - High
Brompton C Line Explore Black - High

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Felt AR FRD Ultimate Dura-ACE DI2
Felt AR FRD Ultimate Dura-ACE DI2

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Technical Specifications
Drivetrain Brompton Wide-range 6 speed drivetrain (2 x 3 speed), 302% range 2x11-speed
Frame Main Frame : Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints
Rear Frame : Hand brazed cold-formed micro-alloy steel tubing
Felt AeroRoad 3.0 UHC Ultimate + TeXtreme carbon fiber
Stem -- Felt Sprint UHC Advanced carbon fiber
Handle Bar High Handlebars – Brompton triple butted 6061 aluminium handlebar with shot-peened finish PRO Vibe Aero Superlight
Fork Steel brazed fork Felt AeroRoad 3.0 UHC Ultimate + TeXtreme carbon fiber
Seatpost Brompton standard length Chromoly steel tube. Suitable for maximum inside leg 33″/84cm Felt AeroRoad IL 2.0 UHC Advanced + TeXtreme carbon fiber
Grip Lock-on grips with soft-compound rubber adhered to an engineered core Felt VelvetGel tape with 3M reflective base and Felt Bubble-Tech F-Wing bar end plugs
Crankset -- Shimano Dura-Ace R9100, 52/36T
Crank Length : 48cm: 167.5 mm / 51cm: 170 mm / 54, 56cm: 172.5 mm / 58, 61cm: 175 mm
Pedals Brompton Folding left hand and non-folding right-hand pedals --
Chain -- Shimano Dura-Ace HG901
Shifters Brompton 2 and 3 speed Trigger shifters Shimano Dura-Ace Di2 R9170
Saddle Brompton saddle with integrated carry handle. Incorporates a mount for a Brompton rear light and saddle bag Prologo Dimension 143 Nack
Headset Brompton headset IS (NO.44)
Derailleur Front -- Shimano Dura-Ace R9150 Di2, braze-on
Derailleur Rear -- Shimano Dura-Ace R9150 Di2, short cage
Cassette -- Shimano Dura-Ace R9100, 11-28T
Chainrings 44T (-12% gearing) --
Bottom Bracket Square taper bottom bracket CeramicSpeed EVO386 for Shimano Road
Tyres
Front 349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall Continental Grand Prix 5000 TL, 700 x 25c
Rear 349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall Continental Grand Prix 5000 TL, 700 x 25c
Wheel / RIM Front-wheel: Double-wall rim, 28 spokes laced to a Brompton front hub.
Rear-wheel: Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hub with 2 speed external gears (13 and 16 tooth)
HED Vanquish RC6 Pro Series, 12 mm, Shimano
Tube Schrader valve --
Brakes
Front Brompton Dual Pivot Calipers Disc, Flat Mount 140 mm minimum rotor
Rear Brompton Dual Pivot Calipers Disc, Flat Mount 25 mm thickness, 140 mm minimum rotor
Suspension
Front -- --
Rear -- --
Colors Available
Colors Black (matt) --


Physical Specs
Length -- --
Weight 12.1 kg 7.64 kg
Overview
Features -- --
Additional Details Folded Size : 645mm (H) x 565mm (W) x 270mm (D) (25.3” x 23” x 10.6”)
Front carrier : Front carrier block adaptor for all types of Brompton luggage
Mudguards : Mudguards with rubberised flap
Sizes : 6 | 48, 51, 54, 56, 58, 61cm
Frame Technologies : MMC / InsideOut
Derailleur Hanger Type Front : Brazed-On | integrated backup plate, non-replaceable, aluminum
Derailleur Hanger Type Rear : Standard Mount TA 12x142 road, replaceable, aluminum
Protector Type : Felt SteererStop integration for replaceable brake and shift protection / Felt CDRoad integration for chain drop protection / Felt ChainPlate for chain suck protection / Clear vinyl for chain slap protection
Brake Calipers : Shimano Dura-Ace R9170, hydraulic disc, flat mount
Routing Type : Semi-Hidden electronic specific
Fork Technologies : Monocoque construction / Integrated crown race

Which one do you think is better? And why?
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