Bicycle Archive · Specification report

2018 Cannondale Synapse Carbon Disc Ultegra Di2

Velopedia Archive ID 900002489

Overview

Model year	2018
Brand	Cannondale
Model	Synapse Carbon Disc Ultegra Di2
Bicycle type	Road
Archive ID	900002489
Colors	Ash Gray w/ Anthracite and Copper - Gloss (CPR)
Sizes	48, 51, 54, 56, 58, 61

Frameset

Frame construction	NEW Synapse Disc, BallisTec Carbon, Di2 ready, SAVE PLUS, BB30a, flat mount, 12mm thru axle
Frame material	Carbon
Fork	NEW Synapse Disc Asymmetric, SAVE PLUS, BallisTec Carbon, integrated crown race, size-specific design 44-48: 1 1/8” steerer, 60mm rake 51-54: 1-1/8” - 1-1/4” tapered steerer, 55mm rake 56-61: 1-1/8” - 1-3/8” tapered steerer, 45mm rake
Fork material	Carbon

Drivetrain

Shifters	Shimano Ultegra Di2 R8070 hydro disc
Front derailleur	Shimano Ultegra Di2 R8050, braze-on
Rear derailleur	Shimano Ultegra Di2 R8050 GS
Crankset	Cannondale Si, BB30a, w/ FSA rings, 50/34
Bottom bracket	FSA BB30 Bearings
Rear cogs	Shimano Ultegra R8000, 11-32, 11-speed
Chain	Shimano HG601, 11-speed
Pedals	N/A

Brakes

Brakes	Shimano Ultegra R8070 hydro disc, flat mount, 160/160mm

Cockpit & contact points

Headset	Synapse Si, 25mm carbon top cap
Handlebar	Cannondale C2 Compact, butted 2014 Alloy
Stem	Cannondale C2, 7050 Alloy, 31.8, 6 deg.
Saddle	Selle Royal Seta S1
Seatpost	Cannondale C2, UD Carbon, 25.4x350mm (48-56) 400mm (58-61)

Wheels & tires

Hubs	Mavic Aksium Disc, Centerlock, 100x12mm front, 142x12mm rear
Rims	Mavic Aksium Disc
Spokes	Mavic Aksium
Front tire	Schwalbe Lugano, Folding, 700x28c
Rear tire	Schwalbe Lugano, Folding, 700x28c
Wheel size	700c

Geometry · 48

Seat tube	407 mm
Effective top tube	517 mm
Head tube	122 mm
Head-tube angle	70.8°
Seat-tube angle	74.6°
Chainstay / rear center	410 mm
Wheelbase	996 mm
Bottom-bracket drop	75 mm
Bottom-bracket height	270 mm
Reach	371 mm
Stack	530 mm
Standover height	712 mm
Fork offset / rake	60 mm
Front center	598 mm
Trail	56 mm

Geometry · 51

Seat tube	443 mm
Effective top tube	531 mm
Head tube	137 mm
Head-tube angle	71.7°
Seat-tube angle	74.3°
Chainstay / rear center	410 mm
Wheelbase	994 mm
Bottom-bracket drop	75 mm
Bottom-bracket height	270 mm
Reach	377 mm
Stack	550 mm
Standover height	742 mm
Fork offset / rake	55 mm
Front center	596 mm
Trail	56 mm

Geometry · 54

Seat tube	480 mm
Effective top tube	547 mm
Head tube	161 mm
Head-tube angle	71.7°
Seat-tube angle	73.9°
Chainstay / rear center	410 mm
Wheelbase	1008 mm
Bottom-bracket drop	73 mm
Bottom-bracket height	272 mm
Reach	382 mm
Stack	570 mm
Standover height	773 mm
Fork offset / rake	55 mm
Front center	609 mm
Trail	56 mm

Geometry · 56

Seat tube	520 mm
Effective top tube	561 mm
Head tube	173 mm
Head-tube angle	73°
Seat-tube angle	73.5°
Chainstay / rear center	410 mm
Wheelbase	995 mm
Bottom-bracket drop	73 mm
Bottom-bracket height	272 mm
Reach	386 mm
Stack	590 mm
Standover height	804 mm
Fork offset / rake	45 mm
Front center	596 mm
Trail	58 mm

Geometry · 58

Seat tube	550 mm
Effective top tube	579 mm
Head tube	197 mm
Head-tube angle	73°
Seat-tube angle	73°
Chainstay / rear center	410 mm
Wheelbase	1009 mm
Bottom-bracket drop	70 mm
Bottom-bracket height	275 mm
Reach	393 mm
Stack	610 mm
Standover height	833 mm
Fork offset / rake	45 mm
Front center	609 mm
Trail	58 mm

Geometry · 61

Seat tube	590 mm
Effective top tube	604 mm
Head tube	229 mm
Head-tube angle	73°
Seat-tube angle	72.5°
Chainstay / rear center	410 mm
Wheelbase	1028 mm
Bottom-bracket drop	70 mm
Bottom-bracket height	275 mm
Reach	402 mm
Stack	640 mm
Standover height	868 mm
Fork offset / rake	45 mm
Front center	627 mm
Trail	58 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 29, 2026.