Cannondale SuperSix EVO vs Specialized Tarmac SL8
These are two elite race bikes aimed at the same rider, but they do not feel the same once you look at the geometry. The current SuperSix EVO mixes low weight with Cannondale's SAVE compliance. The Tarmac SL8 stays the lighter, sharper option. Fit and road feel usually decide this one.
Side-by-Side Overview
$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
$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 | 384 mm |
| Stack (54) | 527 mm | 544 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
- Stack:
- 489 mm
- Reach:
- 376 mm
- Stack:
- 503 mm
- Reach:
- 380 mm
- Stack:
- 518 mm
- Reach:
- 384 mm
- Stack:
- 527 mm
- Reach:
- 388 mm
- Stack:
- 559 mm
- Reach:
- 392 mm
- Stack:
- 587 mm
- Reach:
- 395 mm
- Stack:
- 613 mm
- Reach:
- 400 mm
- Stack:
- 501 mm
- Reach:
- 366 mm
- Stack:
- 514 mm
- Reach:
- 375 mm
- Stack:
- 527 mm
- Reach:
- 380 mm
- Stack:
- 544 mm
- Reach:
- 384 mm
- Stack:
- 565 mm
- Reach:
- 395 mm
- Stack:
- 591 mm
- Reach:
- 402 mm
- Stack:
- 612 mm
- Reach:
- 408 mm
| Measurement | Cannondale SuperSix EVO | Specialized Tarmac SL8 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | 44 | 48 | 51 | 54 | 56 | 58 | 61 | 44 | 49 | 52 | 54 | 56 | 58 | 61 |
| Stack (mm) | 489 | 503 | 518 | 527 | 559 | 587 | 613 | 501 | 514 | 527 | 544 | 565 | 591 | 612 |
| Reach (mm) | 376 | 380 | 384 | 388 | 392 | 395 | 400 | 366 | 375 | 380 | 384 | 395 | 402 | 408 |
Geometry Comparison Chart
Source-backed geometry used in this table
- Cannondale SuperSix EVO: 2021-2024 geometry, Cannondale SuperSix EVO geometry. Captured before this pilot, reviewed 2026-06-20, confidence medium.
- Specialized Tarmac SL8: 2023-2026 geometry, Specialized S-Works Tarmac SL8 frameset geometry. Captured 2026-09-10, reviewed 2026-09-10, confidence high.
For now this pilot only covers stack and reach. We still do not have standover, top tube, wheelbase, or angle data in a verified record here, so the page stops short of making a stronger fit call.
Sizing Comparison
Both brands use familiar road numbers, but the shared 54 label is misleading. The SuperSix EVO 54 sits at 527 / 388. The verified Tarmac SL8 54 sits at 544 / 384. That makes the Cannondale 17 mm lower in stack and 4 mm longer in reach. The jump to 56 is also bigger on the SuperSix, so riders between 54 and 56 should match the bike they already ride rather than assume the same number transfers cleanly.
Verdict
Pick the SuperSix EVO if you want a race bike that gives you a bit more breathing room on long rides and rough pavement. Pick the Tarmac SL8 if low weight and a tauter race feel matter more, and you already know you are comfortable on an aggressive front end.
🏆 Best for Comfort
Cannondale SuperSix EVO - SAVE micro-suspension takes more edge off rough roads, even though the verified Tarmac 54 sits taller at the front.
🏆 Best for Performance
Specialized Tarmac SL8 - the lighter frame still has the edge when the course tilts uphill.