Cannondale SystemSix Hi-MOD Ultegra Di2

Name: Cannondale SystemSix Hi-MOD Ultegra Di2
Brand: Cannondale

2026 RoadAero Manufacturer page

Cannondale SystemSix Hi-MOD Ultegra Di2, color Stealth Grey

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 36–52t / 11–30t
Gear range: 394%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

47cm 160–170.2
51cm 165.1–175.3
54cm 170.2–180.3
56cm 177.8–188
58cm 182.9–193
60cm 188–198.1
62cm 195.6–205.7

Components

13 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

SystemSix Hi-MOD Carbon, integrated cable routing w/ Switchplate, SAVE, PF30a, flat mount disc, 12x142 Speed Release thru-axle Not identified

Suspension

1 part

Fork

SystemSix Hi-MOD Carbon, 1-1/8" - 1-1/4" steerer, 12x100mm Speed Release thru-axle, flat mount disc, 55mm offset (47-51cm) 45mm offset (54-62cm) Not identified

Drivetrain

7 parts

Brakes

2 parts

Wheels and tires

5 parts

Front hub

HollowGram KNØT, sealed bearing 12x100mm centerlock Not identified
Rear hub
- DT Swiss 350
Rims

HollowGram 64 KNØT, Carbon, 20h front, 24h rear, 64mm deep, 21mm inner width, tubeless ready Not identified
Spokes

HollowGram, 2.0/1.8/2.0, straight-pull Not identified
Tires
- Vittoria

Cockpit and contact points

7 parts

Grips
- Cannondale
Handlebar

HollowGram KNØT SystemBar, Carbon, 8 deg. pitch adjust Not identified
Headset

Integrated, 1-1/8" - 1-1/4" Not identified
Pedals

Not included Not identified
Saddle
- Fizik Aliante
Seatpost

HollowGram 60 KNØT Carbon, 330mm Not identified
Stem

HollowGram KNØT, Alloy w/ cable cover, -17° Not identified

Sizes and geometry

7 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 56cm

Table

Reach 392mm

Stack 560mm

Wheelbase 987mm

Head angle 73.0°

Seat angle 73.3°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	375	381	386	392	398	403	409
Stackmm	500	520	540	560	580	600	620
Top tube lengthmm	514	529	544	560	576	592	609
Seat tube lengthmm	385	433	482	530	553	577	600
Head tube lengthmm	88	114	128	149	172	193	214
Head tube angle	71.2°	71.2°	73°	73°	73°	72.9°	72.9°
Seat tube angle	74.5°	74.1°	73.7°	73.3°	72.9°	72.5°	72.1°
Chainstay lengthmm	405	405	405	405	405	405	405
Wheelbasemm	974	989	975	987	1000	1012	1024
Front centermm	582	595	581	593	605	617	629
Bottom bracket dropmm	79	74	72	72	69	69	69
Bottom bracket heightmm	261	266	269	269	271	271	271
Standover heightmm	680	723	762	798	821	843	863
Fork rakemm	55	55	45	45	45	45	45
Trailmm	58	58	57	57	57	58	58
Stack/reach ratio	1.33	1.37	1.40	1.43	1.46	1.49	1.52

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 36
Largest chainring: 52
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 30
Lowest gear: 34.8 in
Highest gear: 137.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: PF30A
Tire width: 25c
Wheel material: Carbon
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

34.8 gear inches

This value is above the central range for this class.

Cohort: Road / Aero Model year: 2026
Sample: 283 bicycles with this information
Coverage: 79.9% of the class

Highest gear

137.1 gear inches

This value is within the central range for this class.

Cohort: Road / Aero Model year: 2026
Sample: 283 bicycles with this information
Coverage: 79.9% of the class

Shifting

Electronic

270 of 352 bicycles with this information use electronic shifting.

Cohort: Road / Aero Model year: 2026
Sample: 352 bicycles with this information
Coverage: 99.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.3 km/h
Highest gear: 52.5 km/h

Total gear range 394%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 34.8–137.1 gear inches
Class reference (p10–p90): 28.2–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Aero Model year: 2026
Lowest gear: 283 bicycles with this information, 79.9% of the class
Highest gear: 283 bicycles with this information, 79.9% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2026 builds
Specification	This bicycle Cannondale SystemSix Hi-MOD Ultegra Di2	Cannondale SystemSix Hi-MOD Dura-Ace Di2	Cannondale SystemSix Hi-MOD Red eTap AXS
Drivetrain
Smallest chainring	36	36	35
Largest chainring	52	52	48
Rear sprockets	12	11	12
Smallest sprocket	11	11	10
Largest sprocket	30	30	28
Lowest gear	34.8 in	34.8 in	36.3 in
Highest gear	137.1 in	137.1 in	139.2 in
Other specifications
Bottom bracket standard	PF30A	PF30	PF30