Which is better, the Cervélo R5 or the Ridley Falcn RS?

Both are excellent road bikes. The Cervélo R5 and Ridley Falcn RS excel in different areas - sizing, geometry, and riding style all factor in. Use our side-by-side comparison above to see which fits your body measurements and riding goals.

How do Cervélo and Ridley sizing compare?

Cervélo and Ridley use different sizing systems. A medium in one brand may not match a medium in the other. Always check the specific size chart for each model and compare stack, reach, and standover height for the best fit.

Is the Cervélo R5 good for beginners?

The Cervélo R5 can work for beginners depending on the specific build and geometry. Consider factors like stack height (upright vs aggressive), standover clearance, and tire clearance. Our bike size calculator can help determine if it's the right fit for your measurements.

What size Ridley Falcn RS should I get?

The right size depends on your height and inseam measurement. Use our bike size calculator with your measurements, then cross-reference with the Ridley size chart to find your ideal frame size for the Falcn RS.

Can I use the same size in both Cervélo and Ridley?

Not necessarily. Even within the same size label (e.g., "Medium"), Cervélo and Ridley frames may have different effective top tube lengths, reach, and stack measurements. Always compare the geometry tables rather than relying on size labels alone.

Road Bike

Cervélo R5 vs Ridley Falcn RS

Two lightweight Belgian-DNA race bikes face off: Cervélo's WorldTour-proven climbing chassis against Ridley's all-new Falcn RS Classics weapon. Both are race-bred, sub-800g flagships with stack-and-reach driven geometry - this guide breaks down which one fits your size, terrain, and riding style.

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Cyclist considering which bike to choose

Side-by-Side Overview

Cervélo R5

$5,500 - $14,000

Best for: WorldTour climbing and all-around road racing

Strengths

•Sub-800g frame on top builds
•Proven WorldTour pedigree with Visma-Lease a Bike
•Balanced reach across sizes - works for crit and gran fondo
•Clean internal cable routing without forced integrated bar
•Excellent stiffness-to-weight ratio

Considerations

•Premium pricing across the build matrix
•30mm tire clearance trails newer race bikes
•Less aero optimization than the S5 stablemate

Ridley Falcn RS

$5,500 - $11,000

Best for: Belgian Classics-style racing and hilly all-day rides

Strengths

•Race-bred Flemish heritage - tested on cobbles
•Marginally taller stack than the Noah Fast for usable all-day fit
•Stack-and-reach driven sizing translates directly across the Ridley range
•Lifetime frame warranty when registered
•Race-ready geometry without forced integrated cockpit

Considerations

•Less recognised in North America than Cervélo or Specialized
•Dealer network thinner outside Europe
•Not sold on Amazon - have to go through Ridley dealers or DTC

Head-to-Head Comparison

Reach (M / 54)

Cervélo R5388mm

Ridley Falcn RS386mm

Stack (M / 54)

Cervélo R5532mm

Ridley Falcn RS552mm

Tire Clearance

Cervélo R530mm

Ridley Falcn RS32mm ✓

Frame Weight (top build)

Cervélo R5790g ✓

Ridley Falcn RS830g

Cockpit Flexibility

Cervélo R5Round seatpost, optional integrated bar

Ridley Falcn RSStandard bar/stem, easy fit adjustments ✓

Service Network (North America)

Cervélo R5Wide dealer support ✓

Ridley Falcn RSSmaller but growing

Warranty

Cervélo R55 years frame

Ridley Falcn RSLifetime frame (registered) ✓

Aspect	Cervélo R5	Ridley Falcn RS
Reach (M / 54)	388mm	386mm
Stack (M / 54)	532mm	552mm
Tire Clearance	30mm	32mm ✓
Frame Weight (top build)	790g ✓	830g
Cockpit Flexibility	Round seatpost, optional integrated bar	Standard bar/stem, easy fit adjustments ✓
Service Network (North America)	Wide dealer support ✓	Smaller but growing
Warranty	5 years frame	Lifetime frame (registered) ✓

Size Chart Comparison

Cervélo R5

Size 51

Stack:: 522 mm
Reach:: 371 mm

Size 54

Stack:: 547 mm
Reach:: 380 mm

Size 56

Stack:: 572 mm
Reach:: 389 mm

Size 58

Stack:: 597 mm
Reach:: 398 mm

Ridley Falcn RS

Size XS

Stack:: 510 mm
Reach:: 375 mm

Size S

Stack:: 530 mm
Reach:: 380 mm

Size M

Stack:: 552 mm
Reach:: 386 mm

Size L

Stack:: 574 mm
Reach:: 392 mm

Measurement	Cervélo R5				Ridley Falcn RS
Size	51	54	56	58	XS	S	M	L
Stack (mm)	522	547	572	597	510	530	552	574
Reach (mm)	371	380	389	398	375	380	386	392

Geometry Comparison Chart

Sizing Comparison

Cervélo uses traditional 48-61cm seat-tube sizing while Ridley uses XXS-XL letter sizing, and the two do not line up cleanly. A Cervélo 54 (547/380) sits between the Ridley S (530/380) and M (552/386) - identical reach to the S but 17mm more stack. The R5's stack climbs about 25mm per size against roughly 22mm on the Falcn RS, so the gap widens as you go up: an R5 58 (597/398) stacks 23mm taller than a Ridley L (574/392) at similar reach. Riders moving from an R5 to a Falcn RS should expect to add spacers, not remove them, to keep the same bar height.

Verdict

Choose the Cervélo R5 if you want a sub-800g WorldTour-proven climber with deep build-kit options and broad service support. Choose the Ridley Falcn RS for slightly more usable stack at the same reach, a Belgian Classics ride feel, and a lifetime frame warranty.

Best for Comfort

Ridley Falcn RS - taller stack at the same reach is easier to hold all day

Best for Performance

Cervélo R5 - lighter frame and deeper WorldTour development heritage