Cannondale Synapse Carbon 2

An all-round road bike from 2025, made in 7 sizes from 48 to 44. Fits tyres up to 48 mm.

Size

Stack 570 mmReach 381 mm

Geometry

Cannondale Synapse Carbon 2 geometry by frame size
Size
Fit
Stack (mm)How high the front sits	530	550	570	590	610	640	–
Reach (mm)How far forward the bars start	371	376	381	387	393	402	–
Stack ÷ reach Higher = more upright	1.43	1.46	1.50	1.52	1.55	1.59	–
Top tube (effective) (mm)Horizontal top-tube length	533	544	555	567	580	598	–
Seat tube angle Saddle position over the pedals	73°	73°	73°	73°	73°	73°	–
Seat tube length (mm)Frame size reference	407	443	480	520	550	590	–
Head tube length (mm)Front-end height	108	127	150	171	196	227	–
Standover (mm)Clearance when you stop	722	752	785	815	843	878	–
Handling
Head tube angle Steeper = quicker steering	70.9°	71.3°	71.3°	71.3°	71.3°	71.3°	–
Fork offset (mm)Fork rake	55	55	55	55	55	55	55
Trail (mm)More = steadier steering	64	61	61	61	61	61	–
Wheelbase (mm)Longer = more stable	1005	1013	1026	1044	1058	1077	–
Chainstay (mm)Shorter = snappier	425	425	425	430	430	430	–
BB drop (mm)More = lower centre of gravity	75	73	73	73	70	70	–
BB height (mm)Pedal clearance in corners	261	263	263	263	266	266	–
Front centre (mm)Room for your toes	592	600	612	624	638	657	–

Underlined values are calculated by BikeLens. A dash means the brand doesn't publish it.

Between race and comfort. A good fit for sportives, club rides and fast days out.

Size 54 is more upright than 78% of the 218 road frames we track.

The closest road frames from other ranges, against size 54 here.

Bikes with a similar fit, compared with size 54 of this bike
Bike	Size	Stack	Reach
MMR Grand Tour 102026Stack −1 mm, reach −1 mm	M	−1 mm	−1 mm
Canyon Endurace:ONfly CF 82025Stack −2 mm, reach +4 mm	S	−2 mm	+4 mm
Bianchi Infinito XE 105 Di22025Stack −1 mm, reach same	55	−1 mm	same
Trek Domane AL 2 Gen 42026Stack +5 mm, reach −7 mm	54	+5 mm	−7 mm
Grind Grit2026Stack +1 mm, reach −3 mm	M	+1 mm	−3 mm
Basso Venta R2026Stack +1 mm, reach same	53	+1 mm	same