Which is better, the Felt FR Advanced or the Specialized Tarmac SL8?

Both are excellent road bikes. The Felt FR Advanced 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 Felt and Specialized sizing compare?

Felt 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 Felt FR Advanced good for beginners?

The Felt FR Advanced 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 Felt and Specialized?

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

Felt FR Advanced vs Specialized Tarmac SL8

Two race road bikes that start about $1,500 apart. The Felt FR Advanced runs TeXtreme carbon, a low-stack race cockpit, and Ultegra Di2 builds priced well under the Tarmac SL8 Comp. The Tarmac SL8 is Specialized's race flagship - sub-700 g FACT 12r frame, Body Geometry sizing across 7 sizes, and a US dealer network nothing else in road cycling matches. Both are serious race bikes. What separates them is dealer support, resale, and how aggressive a fit you want out of the box.

Side-by-Side Overview

Felt FR Advanced

$3,500 - $11,000

Best for: Crit racers and value-seeking road racers who want WorldTour-style geometry without the WorldTour price

Strengths

•Ultegra Di2 builds start around $1,000-$1,500 below an equivalent Tarmac SL8 Comp build
•TeXtreme carbon layup delivers excellent bottom-bracket stiffness for sprinting and out-of-saddle climbing
•Aggressively low stack at every size suits experienced racers who want a slammed cockpit out of the box
•Round seatpost on most builds keeps saddle height and setback adjustments simple
•Stable, predictable handling at criterium speeds and in tight cornering

Considerations

•Felt's US dealer network is a fraction of Specialized's - service and test rides can be hard to access
•Brand visibility in the WorldTour has faded since the Argos-Shimano era, which hurts resale value
•Tire clearance tops out around 30 mm vs the Tarmac SL8's 32 mm
•Bayonet-style integrated cockpit on top builds restricts stem and spacer changes after purchase
•No fully integrated power-meter option from the factory

Specialized Tarmac SL8

$5,000 - $14,000

Best for: WorldTour climbing, crits, and one-bike racing with strong dealer support

Strengths

•Sub-700 g FACT 12r frame on S-Works builds - one of the lightest race frames in production
•Aero gains over the SL7 without a weight penalty thanks to redesigned head tube and fork
•Body Geometry sizing across 7 sizes (44-61 cm) with Rider-First Engineered consistency
•Largest US dealer / service network of any race brand - easy fit appointments and warranty turnaround
•Roval Rapide cockpit standard on top builds; resale value holds up better than direct-to-consumer rivals

Considerations

•Premium pricing across the build matrix - the cheapest Tarmac SL8 build costs more than a mid-tier FR
•Integrated cockpit on Pro and S-Works limits stem-length tweaks after purchase
•Aggressive stack/reach is less forgiving than the Roubaix or Aethos for non-racers
•32 mm tire clearance is generous for a race bike but still narrower than newer all-rounders

Head-to-Head Comparison

Aspect	Felt FR Advanced	Specialized Tarmac SL8
Stack (56 cm)	547 mm	558 mm
Reach (56 cm)	391 mm	391 mm
Frame weight (56 cm, top build)	~830 g	~700 g ✓
Entry price	$3,500 ✓	$5,000
Tire clearance	30 mm	32 mm ✓
Size count	4	7 ✓
Geometry character	Pure race / crit-oriented	Race all-rounder
Dealer network (US)	Limited	Very wide ✓
Resale value	Weaker	Strong ✓

Size Chart Comparison

Measurement	Felt FR Advanced			Specialized Tarmac SL8
Size	54	56	58	49	52	54	56	58	61
Stack (mm)	535	547	562	502	520	538	558	583	612
Reach (mm)	390	391	396	370	378	386	391	395	405

Geometry Comparison Chart

Sizing Comparison

At a shared 56 cm the Tarmac SL8 sits about 11 mm taller in stack (558 mm vs 547 mm) with effectively identical reach (391 mm on both). At 54 the gap closes - Tarmac 538/386 vs Felt FR 535/390 - so 54 cm riders coming from a Tarmac will actually get more reach on the Felt. The Tarmac runs a wider size range (49 to 61 cm) than the FR (51 to 58 cm only), so very tall or very short riders should default to the Tarmac. Both bikes use proprietary integrated cockpits on top builds, so confirm bar height in the size chart before ordering rather than planning to stack spacers later.

Verdict

Buy the Specialized Tarmac SL8 if dealer support, fit consistency, and resale matter on a $5,000-plus purchase, and you want the lighter frame on climbing-heavy race days. Buy the Felt FR Advanced if you are racing on a tighter budget, you want a lower front end without spacer surgery, and you have a competent home mechanic. On equivalent Ultegra Di2 builds the FR typically saves $1,000-$1,500. That is meaningful money for a club racer. At full retail the Tarmac wins on the total package; for value-driven racers the FR is genuinely the smarter buy.

🏆 Best for Comfort

Specialized Tarmac SL8 - 11 mm more stack at 56 cm and slightly wider tire clearance make for less of a beating on a long ride than the lower FR Advanced

🏆 Best for Performance

Specialized Tarmac SL8 - around 130 g lighter at the frame and an active WorldTour development program give it the edge on climbing-heavy race days. The Felt FR Advanced is still the sharper pick for pure criterium racing thanks to its lower front end.