Bianchi Aria e-Road 105 Di2 12sp vs Opus E-Big City ST

Compare Specifications of Bianchi Aria e-Road 105 Di2 12sp and Opus E-Big City ST

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Bianchi Aria e-Road 105 Di2 12sp
Bianchi Aria e-Road 105 Di2 12sp

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Opus E-Big City ST
Opus E-Big City ST

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Technical Specifications
Fuel Electric Electric
Motor Mahle X35 Plus 250W motor unit, iWOC One remote control, BLE and ANT+ compatible Shimano STePS motor E-5000 250W
Maximum Torque -- 40 NM
Battery Mahle X35+ 250Wh Shimano E-8014 418Wh 36V 11.6Ah battery
Display -- SC-E5000 Switch with integrated display
Frame E-Road Aria aero carbon, mechanical/electronic, BB-PressFit 86,5x41, head tube 1.4"-1.1/8", integrated seat clamp, full carbon dropout, aero shape DT-ST, Disc brake flat mount, QR sytem, OLD 135mm sizes 47-50-53-55-57-59-61cm Meta 30 aluminum
Stem Velomann, raise - 6°, height 38mm, Oversize, 1 1/8", size 90/100/110/120cm Ext: 90mm-48/50cm, 100mm-52/54cm, 110mm-56cm, 120mm-58cm Opus Silver
Handle Bar Velomann, Flat Top, alloy 6061 diam. 31,8mm, reach 80mm, drop 130mm Size: 400mm-44/53cm, 420mm-55/59cm, 440mm-61cm Opus Bronze 25 mm rise
Fork Full Carbon Aero Road 1.4">1.1/8" integrated head , Disc brake flat mount, thru axle 12x100 Aluminum tapered 1-1/2 to 1-1/8 in
Seatpost Full Carbon Aero special dimension, special Clamp type with alloy head adjustable and reversible +/- 35mm; lenght: 300mm - 47/50cm; 350mm - 53/61 Opus Silver 31.6 x 350
Grip La Spirale Ribbon cork Velo ERGO dual density
Crankset Shimano, FC-R7100, 105, 50-34T Crank Length: 47-50-53 - 170mm 55-57-59 - 172.5mm61L - 175mm Shimano STePS
Chain Shimano, CN-M7100, HG 12-Speed KMC E9 EPT
Shifters Shimano Disc Brake Set, 105, ST-R7170 Shimano Alivio 9
Saddle Velomann, carbon steel rail, 262x145 Opus E-CITY
Headset FSA Orbit C-33, NO.44E, 1-1/8 FSA Orbit integrated sealed
Derailleur Front Shimano, FD-R7150, 105 --
Derailleur Rear Shimano, RD-R7150, 105,12-SPEED Shimano Alivio 3100 Shadow
Hub Rear FSA Vision Trimax alloy disc with rear Mahle motor hub Formula/Shimano
Cassette -- Shimano 11-36
Bottom Bracket Shimano,SM-BB72-41B, Press Fit Type for Road, Bearing, Inner Cover Shimano STePS E-5000
Tyres
Front Vittoria Rubino Pro G2.0 graphene, 700 x 28c, 150TPI Kenda Kwick Seven.5 27.5 x 2.4
Rear Vittoria Rubino Pro G2.0 graphene, 700 x 28c, 150TPI Kenda Kwick Seven.5 27.5 x 2.4
Wheel / RIM FSA Vision Trimax alloy disc with rear Mahle motor hub Weinnman U32 TL
Brakes
Front Shimano, SM-RT86, S 160mm Disc Shimano BR-MT201 hydraulic disc
Rear Shimano, SM-RT86, S 160mm Disc Shimano BR-MT201 hydraulic disc
Brake Lever -- Shimano BL-MT201
Suspension
Front -- --
Rear -- --
Colors Available
Colors 1A - CK16 / Black Full Glossy
PZ - Summertime Dream / Black Full Glossy
Stealth Black


Physical Specs
Length -- --
Weight -- 19.7 kg
Overview
Features -- - Low step-through frame for everyone to enjoy
- Lightweight 6061 aluminum Fork
- Shimano 1x9 drivetrain
- Shimano MT201 hydraulic disc brakes
- Shimano STePS E-5000 motor and E-8014 418Wh semi-integrated battery
Additional Details -- Chainrings : 38

Which one do you think is better? And why?
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