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Argon 18 Sum: every build compared

Sum Shimano 105 Di2 R7150 12v

High endAeroCarbon700c2026

Sum Shimano Ultegra Di2 R8150 12v

Top of the rangeAeroCarbon700c2026

Sum SRAM Force AXS E1 12v

Top of the rangeAeroCarbon700c2026

Sum Pro Shimano Ultegra Di2 R8150 12v

Top of the rangeAeroCarbon700c2026

The 6 builds of the line side by side, from the cheapest list price: what each step up changes.

Pick up to 4 builds to set side by side
Argon 18 Sum Shimano 105 Di2 R7150 12v, side viewArgon 18Argon 18 Sum Shimano 105 Di2 R7150 12v
Argon 18 Sum Shimano Ultegra Di2 R8150 12v, side viewArgon 18Argon 18 Sum Shimano Ultegra Di2 R8150 12v
Argon 18 Sum SRAM Force AXS E1 12v, side viewArgon 18Argon 18 Sum SRAM Force AXS E1 12v
Argon 18 Sum Pro Shimano Ultegra Di2 R8150 12v, side viewArgon 18Argon 18 Sum Pro Shimano Ultegra Di2 R8150 12v

At a glance

  • Argon 18 Sum Shimano Ultegra Di2 R8150 12v has the higher-range groupset: Shimano Ultegra Di2, against Shimano 105 Di2.
  • Argon 18 Sum Shimano 105 Di2 R7150 12v has the shorter lowest gear: 12 km/h at 90 rpm, against 14 km/h.
Key specs4 differences
Model yearSame for all 2026 2026 2026 2026
FrameSame for all Carbon
As printed

optimize frame topology and carbon layup

 Carbon
As printed

optimize frame topology and carbon layup

 Carbon
As printed

optimize frame topology and carbon layup

 Carbon
As printed

optimize frame topology and carbon layup

Wheelset 700c · Scope S4.A 700c · Scope R4 700c · Scope R4 700c · DT Swiss ARC1400 Dicut Wheelset
DrivetrainSame for all 2×12 2×12 2×12 2×12
Groupset Shimano 105 Di2
As printed

Rear Derailleur: Shimano 105 Di2 R7150

 Shimano Ultegra Di2 Higher range
As printed

Rear Derailleur: Shimano Ultegra Di2 R8150

 SRAM Force AXS E1 Higher range
As printed

Rear Derailleur: SRAM Force AXS E1

 Shimano Ultegra Di2 Higher range
As printed

Rear Derailleur: Shimano Ultegra Di2 R8150

Brake model Shimano 105 Di2 R7170 Shimano Ultegra Di2 R8170 Higher range SRAM Force AXS Higher range Shimano Ultegra Di2 R8170 Higher range
Seatpost SUM specific SUM specific SUM specific SUM specific (included with frameset)

Prices

Each model's retailers, delivered to your country, and their prices over time.

Argon 18 Sum Shimano 105 Di2 R7150 12v

Argon 18 Sum Shimano 105 Di2 R7150 12v

Argon 18 Sum Shimano Ultegra Di2 R8150 12v

Argon 18 Sum Shimano Ultegra Di2 R8150 12v

Argon 18 Sum SRAM Force AXS E1 12v

Argon 18 Sum SRAM Force AXS E1 12v

Argon 18 Sum Pro Shimano Ultegra Di2 R8150 12v

Argon 18 Sum Pro Shimano Ultegra Di2 R8150 12v

Character

  • Sum Shimano 105 Di2 R7150 12v · Road bike average gearing, rather high equipment.
  • Sum Shimano Ultegra Di2 R8150 12v · Road bike average gearing, very high equipment.
  • Sum SRAM Force AXS E1 12v · Road bike average gearing, very high equipment.
  • Sum Pro Shimano Ultegra Di2 R8150 12v · Road bike average gearing, very high equipment.

Gearing

Speed in the lowest and the highest gear at 90 rpm: lower on the left climbs easier, higher on the right goes faster.

  • Argon 18 Sum Shimano 105 Di2 R7150 12v12 km/h - 54 km/h
  • Argon 18 Sum Shimano Ultegra Di2 R8150 12v14 km/h - 54 km/h
  • Argon 18 Sum SRAM Force AXS E1 12v12 km/h - 55 km/h
  • Argon 18 Sum Pro Shimano Ultegra Di2 R8150 12v14 km/h - 54 km/h
Easiest gear (climbing)Hardest gear (descending)
Argon 18 Sum Shimano 105 Di2 R7150 12vArgon 18 Sum Shimano Ultegra Di2 R8150 12vArgon 18 Sum SRAM Force AXS E1 12vArgon 18 Sum Pro Shimano Ultegra Di2 R8150 12v

Components and specs

Every spec line by line; the higher range of a component is marked. The technical groups are folded.

Ride type
Ride typeSame for all Aero
As printed

Best Lightweight Aero Road Bike

 Aero
As printed

Best Lightweight Aero Road Bike

 Aero
As printed

Best Lightweight Aero Road Bike

 Aero
As printed

Pro Lightweight Aero Race Bike

Frame and fork1 difference
Max tyre clearanceSame for all 32 mm 32 mm 32 mm 32 mm
Bottom bracket BB Ultegra SM-BB72 BB Ultegra SM-BB72 SRAM DUB PF 86.5 Road CeramicSpeed BB86 Shimano Coated
Cable routingSame for all Fully integrated
As printed

Integrated Cables: Yes

 Fully integrated
As printed

Integrated Cables: Yes

 Fully integrated
As printed

Integrated Cables: Yes

 Fully integrated
As printed

Integrated Cables: Yes

Drivetrain6 differences
Groupset brand Shimano
As printed

Shimano 105 Di2 R7150

 Shimano
As printed

Shimano Ultegra Di2 R8150

 SRAM
As printed

Front Derailleur: SRAM Force AXS E1

 Shimano
As printed

Shimano Ultegra Di2 R8150

Shifting Electronic, wired
As printed

Shifters: Shimano 105 Di2 R7150

 Electronic, wired
As printed

Shifters: Shimano Ultegra Di2 R8170

 Electronic, wireless
As printed

Shifters: SRAM Force AXS E1

 Electronic, wired
As printed

Shifters: Shimano Ultegra Di2 R8170

ChainringsSame for all 2 °Value not published by the brand 2 °Value not published by the brand 2 °Value not published by the brand 2 °Value not published by the brand
Gears at the backSame for all 12 °Value not published by the brand 12 °Value not published by the brand 12 12 °Value not published by the brand
Chainring teeth Shimano 105 FC-R7100 52/36 Shimano Ultegra R8100 52/36 SRAM Force AXS Powermeter 48/35 Higher range Shimano Ultegra R8100 52/36
Cassette Shimano 105 CS-R7100 11-34 Shimano Ultegra CS-R8100 11-30 Higher range SRAM XG 1270 10-33 XDR Shimano Ultegra CS-R8100 11-30 Higher range
Rear derailleur Shimano 105 Di2 R7150 °Value not published by the brand Shimano Ultegra Di2 R8150 °Value not published by the brandHigher range SRAM Force AXS E1 °Value not published by the brandHigher range Shimano Ultegra Di2 R8150 °Value not published by the brandHigher range
Shifters–Not given Shimano Ultegra Di2 R8170 °Value not published by the brand SRAM Force AXS °Value not published by the brand Shimano Ultegra Di2 R8170 °Value not published by the brand
Power meter fitted–Not given–Not given yes –Not given
Brakes
BrakesSame for all Hydraulic disc °Value not published by the brand
As printed

Shimano 105 Disque hydraulique

 Hydraulic disc °Value not published by the brand
As printed

Shimano Ultegra Disque hydraulique

 Hydraulic disc °Value not published by the brand
As printed

SRAM Force Disque hydraulique

 Hydraulic disc °Value not published by the brand
As printed

Shimano Ultegra Disque hydraulique

Front rotorSame for all 160 mm 160 mm 160 mm 160 mm
Rear rotorSame for all 140 mm 140 mm 140 mm 140 mm
Wheels and tyres1 difference
Wheel sizeSame for all 700c / 29" °Value not published by the brand 700c / 29" °Value not published by the brand 700c / 29" °Value not published by the brand 700c / 29" °Value not published by the brand
RimsSame for all Carbon °Value not published by the brand Carbon °Value not published by the brand Carbon °Value not published by the brand Carbon °Value not published by the brand
Tyres Vittoria Corsa N.EXT TLR 28mm Vittoria Corsa N.EXT TLR 28mm Vittoria Corsa N.EXT TLR 28mm Vittoria Corsa Pro TLR 28c
Tyre width fittedSame for all 28 mm 28 mm 28 mm 28 mm
Cockpit and seatpost1 difference
HandlebarSame for all Ciclovation LEATHER TOUCH Tornado Gloss °Value not published by the brand Ciclovation LEATHER TOUCH Tornado Gloss °Value not published by the brand Ciclovation LEATHER TOUCH Tornado Gloss °Value not published by the brand Ciclovation LEATHER TOUCH Tornado Gloss °Value not published by the brand
Stem FSA SMR-II °Value not published by the brand FSA SMR-II °Value not published by the brand FSA SMR-II °Value not published by the brand–Not given
Seatpost model SUM specific °Value not published by the brand SUM specific °Value not published by the brand SUM specific °Value not published by the brand SUM specific (included with frameset) °Value not published by the brand

° Value not published by the brand

Where to buy them

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