Which is better, the Cannondale SuperSix EVO or the Specialized Tarmac SL8?

Both are excellent road bikes. The Cannondale SuperSix EVO and Specialized Tarmac SL8 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 Cannondale and Specialized sizing compare?

Cannondale and Specialized 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 Cannondale SuperSix EVO good for beginners?

The Cannondale SuperSix EVO 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 Specialized Tarmac SL8 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 Specialized size chart to find your ideal frame size for the Tarmac SL8.

Can I use the same size in both Cannondale and Specialized?

Not necessarily. Even within the same size label (e.g., "Medium"), Cannondale and Specialized 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

Cannondale SuperSix EVO vs Specialized Tarmac SL8

Two of the longest-running aero-light race platforms in road cycling square off. The 4th-gen SuperSix EVO leans into balanced all-rounder geometry and Cannondale's SAVE micro-suspension; the Tarmac SL8 fuses Venge aero with Tarmac climbing into one sub-700 g frame. Both win WorldTour races. Fit, weight, and compliance separate them.

Side-by-Side Overview

Cannondale SuperSix EVO

$3,500 - $13,000

Best for: All-rounder racing with comfort margin for long days

Strengths

•4th-gen frame ~770 g with deeper aero tubes than gen 3
•SAVE micro-suspension at fork and seatstays
•Tall stack at size 54 vs Tarmac - friendlier for non-elite fits
•30 mm dropped seatstays plus 32 mm tire clearance
•Wide US dealer network for warranty and fit

Considerations

•Integrated cockpit on Hi-MOD complicates stem swaps
•Not as light as the Tarmac SL8 at the top build
•LAB71 top-tier pricing rivals Tarmac S-Works

Specialized Tarmac SL8

$5,000 - $14,000

Best for: WorldTour climbing, crits, and one-bike racing

Strengths

•Sub-700 g FACT 12r frame at S-Works
•Aero gains over SL7 without weight penalty
•Body Geometry sizing across 7 sizes (44-61 cm)
•Roval Rapide cockpit standard on top builds
•Largest US dealer / service network of any race brand

Considerations

•Premium pricing across the build matrix
•Aggressive stack/reach less forgiving than SuperSix EVO
•Integrated cockpit limits stem-length tweaks

Head-to-Head Comparison

Aspect	Cannondale SuperSix EVO	Specialized Tarmac SL8
Reach (54)	388 mm	386 mm
Stack (54)	527 mm	538 mm
Frame weight (top build)	~770 g	~700 g ✓
Tire clearance	32 mm	32 mm
Compliance features	SAVE micro-suspension ✓	Standard layup
Size count	7	7
Entry price	$3,500 ✓	$5,000
Dealer network (US)	Wide	Very wide ✓

Size Chart Comparison

Measurement	Cannondale SuperSix EVO							Specialized Tarmac SL8
Size	44	48	51	54	56	58	61	49	52	54	56	58	61
Stack (mm)	489	503	518	527	559	587	613	502	520	538	558	583	612
Reach (mm)	376	380	384	388	392	395	400	370	378	386	391	395	405

Geometry Comparison Chart

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Sizing Comparison

Both brands use cm seat-tube sizing in the same 44-61 range. At a 54 the SuperSix EVO sits at 527 / 388 vs the Tarmac SL8 at 538 / 386 - the SuperSix is 11 mm lower in stack with 2 mm more reach. Most riders find the SuperSix size step from 54 to 56 is bigger than the Tarmac's 54 to 56 (32 mm vs 20 mm of stack), so cross-shoppers between 54 and 56 should pay attention to which bike's middle they land on.

Verdict

Choose the SuperSix EVO if you want all-rounder geometry that handles 4-hour rides as comfortably as it handles crit corners, and want SAVE micro-suspension to dampen rough US roads. Choose the Tarmac SL8 if your races are won on the climbs, you want the lightest frame in the class, and you live near a Specialized dealer for fit support.

🏆 Best for Comfort

Cannondale SuperSix EVO - SAVE micro-suspension and a taller relative stack soften long days.

🏆 Best for Performance

Specialized Tarmac SL8 - 70 g lighter at the frame wins on a climbing-heavy race day.