BMC Roadmachine
Road Endurance · All-road · size 56
2 · Semi-Relaxed
Front end and reach about the same.
$2,899 to $10,699
ROAD ENDURANCE
Cannondale Synapse Alloy
An endurance road bike built for comfort and stability on long rides. Position 2 of 5, Semi-Relaxed, scored at a middle size.
- Type
- Road Endurance
- Price
- $1,799 to $2,099
- Sizes
- 44 to 61 (7)
- Position
- 2 · Semi-Relaxed
What Cannondale says
In Cannondale’s words: “our most comfortable, all-around, up-for-anything, pure road machine.”
Source: Cannondale, read October 27, 2026.
Published frame dimensions
Frame-only measurements in millimeters. Stem, spacers and handlebars change where your hands end up. Reach vs. typical compares each size with a typical road frame of the same stack.
| Size | Stack | Reach | Wheelbase | Head angle | Standover | Reach vs. typical |
|---|---|---|---|---|---|---|
| 44 | 535 | 372 | 1008 | 70° | 710 | −6 mm |
| 48 | 555 | 377 | 1014 | 70.5° | 733 | −7 mm |
| 51 | 575 | 382 | 1024 | 71° | 758 | −7 mm |
| 54 | 595 | 387 | 1034 | 71.5° | 785 | −7 mm |
| 56 | 615 | 393 | 1051 | 72° | 807 | −6 mm |
| 58 | 635 | 399 | 1064 | 72.5° | 833 | −6 mm |
| 61 | 665 | 408 | 1082 | 72.5° | 852 | −5 mm |
From Cannondale’s geometry chart, checked October 27, 2026. Visit Cannondale ↗
What the Position levels mean
- 5 · AggressiveLong and low for its sizeMore than 10 mm more reach than a typical frame with the same stack.Most frames here are race bikes.
- 4 · Semi-AggressiveSporty and stretched4 to 10 mm more reach than a typical frame with the same stack.Common on road and gravel race bikes.
- 3 · BalancedMiddle of the rangeWithin 4 mm of typical reach for its stack.Found on every type of road and gravel bike.
- 2 · Semi-RelaxedTaller front, shorter reach4 to 10 mm less reach than a typical frame with the same stack.Common on endurance and all-rounder bikes.
- 1 · RelaxedTallest front and shortest reach for its sizeMore than 10 mm less reach than a typical frame with the same stack.Common on endurance and adventure bikes.
Where this frame sits
Each colored dot is one Synapse Alloy size; gray dots are other current road frames. Shaded bands run from Position 1 Relaxed on the left to 5 Aggressive on the right.
How this frame scores
Compared with a typical road frame of the same stack, sizes run from −7 mm to −5 mm reach. Read at a middle-size stack of 564 mm, the Synapse Alloy scores 2 of 5 (Semi-Relaxed).
Price and builds
$1,799 to $2,099 across 2 builds. Synapse 1; Synapse 2
See all 2 builds
| Build | Groupset | Price |
|---|---|---|
| Synapse 2 | Shimano CUES U6000 | $1,799 |
| Synapse 1 | Shimano 105 R7100 mechanical | $2,099 |
Cannondale US list prices, checked October 27, 2026.
Comparable frames from other brands
The closest match to a size 54 Synapse Alloy from other brands, among current road frames. Same-type frames are listed first.
Scott Speedster
Road Endurance · size L/56
3 · Balanced
Front end and reach about the same.
$1,799 to $2,099
Scott Addict
Road Endurance · All-road · size L/56
3 · Balanced
Front end and reach about the same.
$2,899 to $8,999
Frame details and sources
- Tire clearance
- 32 mm
Cannondale states up to 32 mm tires with 6 mm of room on each side. Actual tire, rim and fender combinations still require confirmation. - Mounts
- Hidden rack and fender mounts, removable fender bridge and fork fender mounts; SmartSense compatible.
- Geometry chart
- Current · Synapse Alloy maker image chart
- Geometry: Cannondale’s chart, checked October 27, 2026.
- Maker description: Cannondale, read October 27, 2026.
- Prices: Cannondale US list prices for complete bikes, October 27, 2026. Prices and stock change often.
- Exact current Synapse Alloy maker image chart shared by the current Synapse 1 and Synapse 2 pages. Seven sizes, 44-61. Not Synapse Carbon, Synapse Neo or the archived CY2022 carbon chart. No maker height ranges were captured; none are inferred.