Velopedia Bicycle Archive
2018 Cannondale Synapse Disc Tiagra
Original manufacturer specifications including 700c wheels, geometry for 6 published sizes.
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What Velopedia knows
- Model year
- 2018
- Category
- Road
- Sizes
- 48, 51, 54, 56, 58, 61
- Colors
- Acid Red w/ Fire Red - Gloss (ARD), Jet Black w/ Stealth Gray and Nitro - Satin (NIT)
- Geometry
- 6 manufacturer sizes · Geometry context
- Record coverage
- 24 preserved details · 2 archived images · preserved geometry
- Archive ID
- 900002484
Frameset
| Frame Construction | NEW Synapse Disc, SmartForm C2 Alloy, SAVE PLUS, BSA |
|---|---|
| Frame Material | Aluminum |
| Fork | NEW Synapse SAVE Disc Asymmetric, Carbon blades, 1-1/8” - 1 1/4” Tapered Steerer, flat mount, 50mm rake (48, 51), 60mm rake (54-61) |
| Fork Material | Carbon |
Drivetrain
| Shifters | Shimano Tiagra |
|---|---|
| Front Derailleur | Shimano Tiagra, braze-on |
| Rear Derailleur | Shimano Tiagra GS |
| Crankset | FSA Omega, BB30, 50/34 |
| Bottom Bracket | FSA Cartridge |
| Rear Cogs | Shimano HG500, 11-34, 10-speed |
| Chain | KMC X10EL, 10-speed |
| Pedals | Wellgo w/ Clip and Strap |
Brakes
| Brakes | Promax DSK 718R, Dual side pulling, flat mount, cable disc 160/160mm |
|---|
Cockpit & Contact Points
| Headset | FSA Integrated, 1-1/4" lower bearing, 25mm top cap |
|---|---|
| Handlebar | Cannondale C4 Compact, 6061 Alloy |
| Stem | Cannondale C4, 31.8, 6 deg. |
| Saddle | Cannondale Stage Ergo |
| Seatpost | Cannondale C4, 6061 Alloy, 25.4x350mm (48-56), 400mm (58-61) |
Wheels & Tires
| Hubs | Formula DC-1420 front, DC-1422 rear |
|---|---|
| Rims | RD 3.0 Disc, 28-hole |
| Spokes | Stainless Steel, 14g |
| Front Tire | Vittoria Zaffiro 700x28c |
| Rear Tire | Vittoria Zaffiro 700x28c |
| Wheel Size | 700c |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | 48 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Seat tube | 422 mm | 443 mm | 480 mm | 520 mm | 550 mm | 590 mm |
| Effective top tube | 517 mm | 531 mm | 547 mm | 563 mm | 580 mm | 604 mm |
| Head tube | 123 mm | 143 mm | 159 mm | 178 mm | 202 mm | 232 mm |
| Head-tube angle | 70.8° | 71° | 71.9° | 72.1° | 72.3° | 72.5° |
| Seat-tube angle | 74.6° | 74.3° | 73.9° | 73.5° | 73° | 72.5° |
| Wheelbase | 999 mm | 1010 mm | 1004 mm | 1014 mm | 1025 mm | 1041 mm |
| Bottom-bracket drop | — | — | 73 mm | 73 mm | 70 mm | 70 mm |
| Bottom-bracket height | — | — | 272 mm | 272 mm | 275 mm | 275 mm |
| Reach | 371 mm | 376 mm | 383 mm | 389 mm | 394 mm | 403 mm |
| Stack | 530 mm | 550 mm | 570 mm | 589 mm | 609 mm | 639 mm |
| Standover height | 701 mm | 722 mm | 755 mm | 787 mm | 816 mm | 851 mm |
| Fork offset / rake | — | — | 50 mm | 50 mm | 50 mm | 50 mm |
| Front center | 598 mm | 608 mm | 602 mm | 612 mm | 622 mm | 638 mm |
| Trail | 57 mm | 55 mm | 60 mm | 59 mm | 58 mm | 56 mm |
Geometry source: Cannondale MY18 Dealer Book, PDF page 185 Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
48 geometry
Archive context: The head angle of 70.8° sits toward the slacker end. Its reach of 371 mm sits toward the shorter end. The seat angle of 74.6° sits somewhat steeper than typical.
Compared with 23 distinct road geometries in the Small-equivalent size cohort from model years 2016–2020 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 48 geometry 51 geometry
Archive context: Its trail of 55 mm sits toward the lower-trail end. Its wheelbase of 1010 mm sits somewhat longer than typical. Its stack of 550 mm sits somewhat taller than typical.
Compared with 23 distinct road geometries in the Small-equivalent size cohort from model years 2016–2020 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 51 geometry 54 geometry
Archive context: Its bottom-bracket drop of 73 mm sits toward the deeper-drop end. The head angle of 71.9° sits somewhat slacker than typical. Its stack of 570 mm sits somewhat taller than typical.
Compared with 23 distinct road geometries in the Medium-equivalent size cohort from model years 2016–2020 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 54 geometry 56 geometry
Archive context: Its bottom-bracket drop of 73 mm sits toward the deeper-drop end. The head angle of 72.1° sits somewhat slacker than typical. The seat angle of 73.5° sits close to the middle of the group.
Compared with 14 distinct road geometries in the Large-equivalent size cohort from model years 2016–2020 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 56 geometry 58 geometry
Archive context: The head angle of 72.3° sits somewhat slacker than typical. Its wheelbase of 1025 mm sits close to the middle of the group. The seat angle of 73° sits close to the middle of the group.
Compared with 10 distinct road geometries in the XL-equivalent size cohort from model years 2016–2020 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 58 geometry 61 geometry
Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze 61 geometry Parts & serviceability
Find replacement parts
KMC X10EL, 10-speed
Exact archived model
Shimano HG500, 11-34, 10-speed
Exact archived model
Vittoria Zaffiro 700x28c
Named tire and published size
More qualified parts (6)
FSA Omega, BB30, 50/34
Named archived component — verify exact version
Shimano Tiagra, braze-on
Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version
Shimano Tiagra GS
Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version
Shimano Tiagra
Interpreted as Shimano Tiagra · 10-speed Named component · published drivetrain speed — verify exact version
25.4 mm seatpost
Published diameter — verify length and setback
Formula DC-1420 front, DC-1422 rear
Named archived component — verify dimensions
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. 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. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesMake sure both cables move freely and the calipers release cleanly. Check pad thickness, rotor wear and rotor alignment.Inspect the brakes →
- DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 10-speed system.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
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 Disc Tiagra · Road · Published sizes: 48, 51, 54, 56, 58, 61
Frame and fork
Inspect the frame and fork →Archived: Frame: NEW Synapse Disc, SmartForm C2 Alloy, SAVE PLUS, BSA · Fork: NEW Synapse SAVE Disc Asymmetric, Carbon blades, 1-1/8” - 1 1/4” Tapered Steerer, flat mount, 50mm rake (48, 51), 60mm rake (54-61) · Carbon
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Tiagra · Front derailleur: Shimano Tiagra, braze-on · Rear derailleur: Shimano Tiagra GS · Crankset: FSA Omega, BB30, 50/34 · Bottom bracket: FSA Cartridge · Rear cogs: Shimano HG500, 11-34, 10-speed · Chain: KMC X10EL, 10-speed
Brakes
Inspect the brakes →Archived: Brakes: Promax DSK 718R, Dual side pulling, flat mount, cable disc 160/160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c · Rims: RD 3.0 Disc, 28-hole · Hubs: Formula DC-1420 front, DC-1422 rear · Front tire: Vittoria Zaffiro 700x28c · Rear tire: Vittoria Zaffiro 700x28c
Controls and contact points
Archived: Headset: FSA Integrated, 1-1/4" lower bearing, 25mm top cap · Handlebar: Cannondale C4 Compact, 6061 Alloy · Stem: Cannondale C4, 31.8, 6 deg. · Seatpost: Cannondale C4, 6061 Alloy, 25.4x350mm (48-56), 400mm (58-61) · Saddle: Cannondale Stage Ergo · Pedals: Wellgo w/ Clip and Strap
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Gallery
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.