7.6–32.5 mph at 90 rpm, estimated from the published rear tire size 700×28c · 28-622 ETRTO.
Velopedia Bicycle Archive
2018 Cannondale Synapse Hi-MOD Disc RED eTap
Original specifications: 700c wheels · geometry for 6 published sizes.
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At a glance
- Model year
- 2018
- Category
- Road
- Sizes
- 48, 51, 54, 56, 58, 61
- Colors
- Satin Black w/ Gloss Black and Anthracite- Satin/Gloss (BBQ)
- Geometry
- 6 manufacturer sizes
- In this record
- 23 specifications · archived image · geometry
- Archive ID
- 900002511
Model history 1 other year
Original buildCarbon · 700c
Frameset
| Frame Construction | NEW Synapse Disc, BallisTec Hi-MOD Carbon, Di2 ready, SAVE PLUS, BB30a, flat mount, 12mm thru axle. |
|---|---|
| Frame Material | Carbon |
| Fork | NEW Synapse Disc Asymmetric, SAVE PLUS, BallisTec Hi-MOD 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 | SRAM RED eTap HRD |
|---|---|
| Front Derailleur | SRAM RED eTap |
| Rear Derailleur | SRAM RED eTap WiFli |
| Crankset | SRAM RED, BB30A, 50/34 |
| Bottom Bracket | FSA BB30 Bearings |
| Rear Cogs | SRAM PG1170, 11-32, 11-speed |
| Chain | SRAM PC1170, 11-speed |
Brakes
| Brakes | SRAM RED eTap hydro disc, 160/160mm |
|---|
Cockpit & Contact Points
| Headset | Synapse Si, 25mm carbon top cap |
|---|---|
| Handlebar | Cannondale Escape Hanger Carbon Handlebar |
| Stem | Cannondale SAVE System |
| Saddle | Fabric Scoop Shallow Pro, Carbon Rail |
| Seatpost | Cannondale SAVE Carbon, 25.4x350mm (44-56), 400mm (58-61) |
Wheels & Tires
| Hubs | Cannondale HollowGram Si Disc, straight-pull, 100x12mm, 24h (F), 142x12mm, 28h (RR), Center-lock |
|---|---|
| Rims | Cannondale HollowGram Si, Carbon Clincher Disc, 19mm inner, 35mm deep, tubeless ready |
| Spokes | DT Swiss Aerolite, straight pull |
| Front Tire | Vittoria Corsa 700x28c |
| Rear Tire | Vittoria Corsa 700x28c |
| Wheel Size | 700c |
Geometry
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
All geometry measurements6 sizes · 15 measurements
| Measurement | 48 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Seat tube | 407 mm | 443 mm | 480 mm | 520 mm | 550 mm | 590 mm |
| Effective top tube | 517 mm | 531 mm | 547 mm | 561 mm | 579 mm | 604 mm |
| Head tube | 122 mm | 137 mm | 161 mm | 173 mm | 197 mm | 229 mm |
| Head-tube angle | 70.8° | 71.7° | 71.7° | 73° | 73° | 73° |
| Seat-tube angle | 74.6° | 74.3° | 73.9° | 73.5° | 73° | 72.5° |
| Chainstay / rear center | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 996 mm | 994 mm | 1008 mm | 995 mm | 1009 mm | 1028 mm |
| Bottom-bracket drop | 75 mm | 75 mm | 73 mm | 73 mm | 70 mm | 70 mm |
| Bottom-bracket height | 270 mm | 270 mm | 272 mm | 272 mm | 275 mm | 275 mm |
| Reach | 371 mm | 377 mm | 382 mm | 386 mm | 393 mm | 402 mm |
| Stack | 530 mm | 550 mm | 570 mm | 590 mm | 610 mm | 640 mm |
| Standover height | 712 mm | 742 mm | 773 mm | 804 mm | 833 mm | 868 mm |
| Fork offset / rake | 60 mm | 55 mm | 55 mm | 45 mm | 45 mm | 45 mm |
| Front center | 598 mm | 596 mm | 609 mm | 596 mm | 609 mm | 627 mm |
| Trail | 56 mm | 56 mm | 56 mm | 58 mm | 58 mm | 58 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

Vittoria Rubino Pro G2.0 Tubeless Tire Black, 700x28
700x28
Replacement option · verify fit

Challenge Strada Pro Tubeless Tire Black, 700x28
700x28
Replacement option · verify fit
More parts (6)

ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 25.4mm
25.4mm
Replacement option · verify fit
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2018 Cannondale Synapse Hi-MOD Disc RED eTap · Road · Published sizes: 48, 51, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: NEW Synapse Disc, BallisTec Hi-MOD Carbon, Di2 ready, SAVE PLUS, BB30a, flat mount, 12mm thru axle. · Fork: · Carbon
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM RED eTap HRD · Front derailleur: SRAM RED eTap · Rear derailleur: SRAM RED eTap WiFli · Crankset: SRAM RED, BB30a, 50/34 · Bottom bracket: FSA BB30 Bearings · Rear cogs: SRAM PG1170, 11-32, 11-speed · Chain: SRAM PC1170, 11-speed
Brakes
Inspect the brakes →Archived: Brakes: SRAM RED eTap hydro disc, 160/160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c · Rims: Cannondale HollowGram Si, Carbon Clincher Disc, 19mm inner, 35mm deep, tubeless ready · Hubs: Cannondale HollowGram Si Disc, straight-pull, 100x12mm, 24h (F), 142x12mm, 28h (RR), Center-lock · Front tire: Vittoria Corsa 700x28c · Rear tire: Vittoria Corsa 700x28c
Controls and contact points
Archived: Headset: Synapse Si, 25mm carbon top cap · Handlebar: Cannondale Escape Hanger Carbon Handlebar · Stem: Cannondale SAVE System · Seatpost: Cannondale SAVE Carbon, 25.4x350mm (44-56), 400mm (58-61) · Saddle: Fabric Scoop Shallow Pro, Carbon Rail
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





