Velopedia Bicycle Archive
2018 Cannondale Synapse Disc 105 SE
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
- Anthracite w/ Transparent Black - Gloss (ANT)
- Geometry
- 6 manufacturer sizes · Geometry context
- Record coverage
- 24 preserved details · archived image · preserved geometry
- Archive ID
- 900002479
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 105 |
|---|---|
| Front Derailleur | Shimano 105, braze-on |
| Rear Derailleur | Shimano 105 GS |
| Crankset | Cannondale Si w/ FSA rings 48/32 |
| Bottom Bracket | FSA BB30 |
| Rear Cogs | Shimano 105, 11-32, 11-speed |
| Chain | KMC X11EL, 11-speed |
| Pedals | Wellgo w/ Clip and Strap |
Brakes
| Brakes | TRP Spyre C cable disc, 160/160mm |
|---|
Cockpit & Contact Points
| Headset | FSA Integrated, 1-1/4" lower bearing, 25mm top cap |
|---|---|
| Handlebar | Cannondale C3 Compact, butted 6061 Alloy |
| Stem | Cannondale C3, 6061 Alloy, 31.8, 6 deg. |
| Saddle | Fabric Scoop Radius Sport |
| Seatpost | Cannondale C3, 6061 Alloy, 25.4x350mm (48-56), 400mm (58-61) |
Wheels & Tires
| Hubs | Formula CX-20 Front, CX-22 Rear |
|---|---|
| Rims | WTB STP i19 TCS 28-hole |
| Spokes | Stainless steel, 14g |
| Front Tire | WTB Exposure, 700x30c, tubeless, gumwall |
| Rear Tire | WTB Exposure, 700x30c, tubeless, gumwall |
| 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 X11EL, 11-speed
Exact archived model
Shimano 105, 11-32, 11-speed
Interpreted as Shimano 105 · 11-speed Component family — verify exact version
WTB Exposure, 700x30c, tubeless, gumwall
Named tire and published size
More qualified parts (6)
FSA BB30
Named archived component — verify dimensions
Fabric Scoop Radius Sport
Named archived component — verify exact version
Shimano 105, braze-on
Interpreted as Shimano 105 · 11-speed Named component · published drivetrain speed — verify exact version
Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shimano 105 GS
Interpreted as Shimano 105 · 11-speed Named component · published drivetrain speed — verify exact version
Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shimano 105
Interpreted as Shimano 105 · 11-speed Named component · published drivetrain speed — verify exact version
Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
25.4 mm seatpost
Published diameter — verify length and setback
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 11-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. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
- Bottom bracketTurn the cranks slowly, feel for rough bearings and check for side-to-side play. Creaking under load deserves investigation but does not identify the source by itself.Inspect the bottom bracket and shell →
Bike-specific inspection checklist 20 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 105 SE · 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 105 · Front derailleur: Shimano 105, braze-on · Rear derailleur: Shimano 105 GS · Crankset: Cannondale Si w/ FSA rings 48/32 · Bottom bracket: FSA BB30 · Rear cogs: Shimano 105, 11-32, 11-speed · Chain: KMC X11EL, 11-speed
Brakes
Inspect the brakes →Archived: Brakes: TRP Spyre C cable disc, 160/160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c · Rims: WTB STP i19 TCS 28-hole · Hubs: Formula CX-20 Front, CX-22 Rear · Front tire: WTB Exposure, 700x30c, tubeless, gumwall · Rear tire: WTB Exposure, 700x30c, tubeless, gumwall
Controls and contact points
Archived: Headset: FSA Integrated, 1-1/4" lower bearing, 25mm top cap · Handlebar: Cannondale C3 Compact, butted 6061 Alloy · Stem: Cannondale C3, 6061 Alloy, 31.8, 6 deg. · Seatpost: Cannondale C3, 6061 Alloy, 25.4x350mm (48-56), 400mm (58-61) · Saddle: Fabric Scoop Radius Sport · 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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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.