Cannondale Synapse 3 vs Specialized S-Works Tarmac SL8

130 facts in comparison

Based on 114 Reddit opinions. Synapse 3Cannondale Synapse 3 leads by 20 points.

114 opinions

Synapse 3 leads by 20pts

Reddit's Pick

Synapse 3

83%

B+

Based on

98 Redditors

Winner

Cannondale Synapse 3

~$35

48 opinions

tldr; Reddit overwhelmingly recommends the Cannondale Synapse 3. With 87% positive sentiment across 98 mentions, this is a clear community favorite.

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63%

Based on

113 Redditors

Specialized S-Works Tarmac SL8

~$26.99

66 opinions

tldr; The race bike. Lightweight, aero, pro-level.

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⭐RID

⚡COM

🔧FRA

📐FIT

⭐VER

Points

Score by Category

Ride Quality

50%—

Components

100%0%

Frame Quality

100%100%

Fit & Sizing

50%100%

Versatility

50%—

Why is S-Works Tarmac SL8 better than Cannondale Synapse 3?

Better fit (100% vs 50%)
Race bike
Ultra light
Aero

Based on 211 Reddit opinions

Clear Winner

Reddit prefers the Synapse 3Cannondale Synapse 3

Winning by 20 points (83% vs 63%)

Better price

Better value

Better tire clearance

High confidence (211 mentions)

💬Reddit Sentiment

Based on 211 Reddit mentions

Overall Rating

Synapse 3

8.3/10

98 mentions

Tarmac SL8

6.3/10

113 mentions

COMFORT

Synapse 35.0/10

Tarmac SL8N/A

FIT

Synapse 35.0/10

Tarmac SL810.0/10

COMPONENTS

Synapse 310.0/10

Tarmac SL80.0/10

BRAKES

Synapse 310.0/10

Tarmac SL810.0/10

PRICE

Synapse 310.0/10

Tarmac SL85.0/10

DESIGN

Synapse 310.0/10

Tarmac SL8N/A

⚔️

Head to Head

Topic	Synapse 3	Tarmac SL8
Comfort	50%	N/A
Fit	50%	100%
Components	100%	0%
Brakes	100%	100%
Price	100%	50%
Design	100%	N/A
Ride Quality	50%	N/A
Value	100%	12%
Agility	100%	N/A
Geometry	100%	N/A
Groupset	0%	50%
Bottom Bracket	0%	N/A
Equipment	100%	100%
Age	0%	0%
Reliability	100%	N/A
Frame	100%	100%
Tire Clearance	100%	50%
Model Year	50%	N/A
Durability	100%	N/A
Versatility	50%	N/A
Category	50%	N/A
Feature	100%	N/A
Value Retention	100%	N/A
Compatibility	0%	N/A
Weight	N/A	100%
Authenticity	N/A	0%
Stiffness	N/A	100%
Tech	N/A	0%
Maintenance	N/A	0%
Cost	N/A	0%
Suitability	N/A	0%
Speed	N/A	50%
Riding Style	N/A	50%
Materials	N/A	0%
Aerodynamics	N/A	33%
Warranty	N/A	100%
Drivetrain	N/A	100%
Adjustability	N/A	0%
Gearing	N/A	0%
Build Quality	N/A	100%
Resale Value	N/A	100%
Paint Job	N/A	100%
Support	N/A	100%

Category Wins

Synapse 3: 16|Tarmac SL8: 13

Head to Head

Synapse 3: 16|Tarmac SL8: 13

ComfortSynapse 3

Synapse 350%

Tarmac SL8N/A

FitTarmac SL8

Synapse 350%

Tarmac SL8100%

ComponentsSynapse 3

Synapse 3100%

Tarmac SL80%

Brakes

Synapse 3100%

Tarmac SL8100%

PriceSynapse 3

Synapse 3100%

Tarmac SL850%

DesignSynapse 3

Synapse 3100%

Tarmac SL8N/A

Ride QualitySynapse 3

Synapse 350%

Tarmac SL8N/A

ValueSynapse 3

Synapse 3100%

Tarmac SL812%

AgilitySynapse 3

Synapse 3100%

Tarmac SL8N/A

GeometrySynapse 3

Synapse 3100%

Tarmac SL8N/A

GroupsetTarmac SL8

Synapse 30%

Tarmac SL850%

Bottom Bracket

Synapse 30%

Tarmac SL8N/A

Equipment

Synapse 3100%

Tarmac SL8100%

Age

Synapse 30%

Tarmac SL80%

ReliabilitySynapse 3

Synapse 3100%

Tarmac SL8N/A

Frame

Synapse 3100%

Tarmac SL8100%

Tire ClearanceSynapse 3

Synapse 3100%

Tarmac SL850%

Model YearSynapse 3

Synapse 350%

Tarmac SL8N/A

DurabilitySynapse 3

Synapse 3100%

Tarmac SL8N/A

VersatilitySynapse 3

Synapse 350%

Tarmac SL8N/A

CategorySynapse 3

Synapse 350%

Tarmac SL8N/A

FeatureSynapse 3

Synapse 3100%

Tarmac SL8N/A

Value RetentionSynapse 3

Synapse 3100%

Tarmac SL8N/A

Compatibility

Synapse 30%

Tarmac SL8N/A

WeightTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Authenticity

Synapse 3N/A

Tarmac SL80%

StiffnessTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Tech

Synapse 3N/A

Tarmac SL80%

Maintenance

Synapse 3N/A

Tarmac SL80%

Cost

Synapse 3N/A

Tarmac SL80%

Suitability

Synapse 3N/A

Tarmac SL80%

SpeedTarmac SL8

Synapse 3N/A

Tarmac SL850%

Riding StyleTarmac SL8

Synapse 3N/A

Tarmac SL850%

Materials

Synapse 3N/A

Tarmac SL80%

AerodynamicsTarmac SL8

Synapse 3N/A

Tarmac SL833%

WarrantyTarmac SL8

Synapse 3N/A

Tarmac SL8100%

DrivetrainTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Adjustability

Synapse 3N/A

Tarmac SL80%

Gearing

Synapse 3N/A

Tarmac SL80%

Build QualityTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Resale ValueTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Paint JobTarmac SL8

Synapse 3N/A

Tarmac SL8100%

SupportTarmac SL8

Synapse 3N/A

Tarmac SL8100%

Synapse 3

83%

63%

Tarmac SL8

Synapse 383%

Tarmac SL863%

Clear winner - Synapse 3 leads by 20 points

Key Specs

Spec	Cannondale Synapse 3	Specialized S-Works Tarmac SL8
Brand	Cannondale	XOTORQ
Manufacturer	Cannondale	XOTORQ
Color	Black	Various
Weight	1.7 Pounds	Approximately 6.62 kg (14.6 lbs) for a complete bike (size 52cm, Dura-Ace Di2 build)
Height	9.99998 inches	Frame sizes vary; tire clearance up to 32mm

Key Highlights

Cannondale Synapse 3Winner

Solid community reputation

Frequently recommended

Specialized S-Works Tarmac SL8

🏆 Race bike

🪶 Ultra light

💨 Aero

💸 Very expensive

Some users report issues (25% negative)

Topic Battles

Synapse 3: 3|Tied: 1|Tarmac SL8: 1

⭐Ride Quality

Synapse 3 wins

Synapse 3

50%

Tarmac SL8

—

⚡Components

Synapse 3 wins

Synapse 3

100%

Tarmac SL8

🔧Frame Quality

Synapse 3

100%

Tarmac SL8

100%

📐Fit & Sizing

Tarmac SL8 wins

Synapse 3

50%

Tarmac SL8

100%

⭐Versatility

Synapse 3 wins

Synapse 3

50%

Tarmac SL8

—

Based on Reddit sentiment across 5 categories

📈Where They Rank

💬What Redditors Actually Say

What Redditors Say

Best praise vs top criticism for Cannondale Synapse 3

Best Praise

+7 pts

“With a $2k budget you can get very nice new bikes. For example the synapse in aluminum with 105 and you will get disc brakes https://www.cannondale.com/en-us/bikes/road/endurance/synapse/synapse-105”

r/whichbike

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Top Criticism

+9 pts

“Is that Sora? This seller is drunk. At the end of last season Cannondale had disc brake Sora Synapses on clearance for less than 1000.”

r/whichbike

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3 more quotes available below

What Redditors Say

Best praise vs top criticism for Specialized S-Works Tarmac SL8

Best Praise

+6 pts

“My god, a lot of low ballers here. Someone said that’s a 1000$ bike. Hahahahahaha. Anyway, that’s close to 2k$ value. Regardless if it’s “old”, it’s still a modern frame, S-Works at that and it has Di2. ”

r/whichbike

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Top Criticism

+5 pts

“This is a bike from the mid late 2000s, hard to say exactly which year. Even as an S-Works, this is an old ass triathlon bike and is worth nowhere near $1200. Seller must have a great dealer. I concur with the other poster, around $300 is probably reasonable.”

r/whichbike

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3 more quotes available below

Sentiment Over Time

Cannondale Synapse 3

Tarmac SL8

📈Historical Price Data

Cannondale Synapse 3

Specialized S-Works Tarmac SL8

Cannondale Synapse 3

All-time low: $20(2026-01)

Specialized S-Works Tarmac SL8

All-time low!

Which is Better?

Cannondale Synapse 3 Wins

83%

63%

SL8

Cannondale Synapse 3 leads by 20 points based on 211 Reddit opinions.

Why Synapse 3Winner

Better Value for Money (100% vs 12%)

Why Tarmac SL8

🏆 Race bike
🪶 Ultra light

❤️The Love/Hate Breakdown

Sentiment Breakdown

43%Positive

Positive

43%

Neutral

51%

Negative

Based on 98 Reddit opinions

Sentiment Breakdown

34%Positive

Positive

34%

Neutral

41%

Negative

25%

Based on 113 Reddit opinions

Specification Comparison

Spec	Cannondale Synapse 3	Specialized S-Works Tarmac SL8
Brand	Cannondale	XOTORQ
Manufacturer	Cannondale	XOTORQ
Color	Black	Various
Weight	1.7 Pounds	Approximately 6.62 kg (14.6 lbs) for a complete bike (size 52cm, Dura-Ace Di2 build)
Height	9.99998 inches	Frame sizes vary; tire clearance up to 32mm
Frame Material	—	S-Works Tarmac SL8 FACT 12r Carbon
Groupset	—	Shimano Dura-Ace Di2 or SRAM Red eTap AXS (with power meter)
Wheelset	—	Roval Rapide CLX II tubeless-ready
Tire Clearance	—	Up to 32mm
Bottom Bracket	—	Threaded BB
Cockpit	—	Roval Rapide Cockpit (integrated bar/stem)

Feature Checklist

Synapse 3: 5|Tarmac SL8: 3

Feature	Synapse 3	Tarmac SL8
【Material Premium】: This bike water bottle cage is built to last. The sturdy construction not only withstands daily wear and tear, ensuring long-lasting performance for intense cycling adventures, but also maintains a sleek appearance. It's a solid option for anyone who wants to stay hydrated while cycling. Enhance your riding experience with our bike cup holder
【Lightweight & Practical】: This bike drink holder is so light that you can't even feel its weight while driving. The ideal bottle holder for your bicycle. What's mor, the dirt is easy to remove and the smooth surface design will not leave scratch on your cup
【Applicable Models】: This bike bottle holder for Specialized S-Works Tarmac SL8 2025, please make sure your vehicle is compatible before buying
Rails: chromoly
Cover: synthetic
Seat Width: 188mm
Activity: commuting, mountain biking
Manufacturer Warranty: 3 years

Features extracted from Reddit highlights and enrichment data

⚔️Head to Head

Metric	Cannondale Synapse 3	Specialized S-Works Tarmac SL8
Reddit Score	83%	63%
Mentions	98	113
Sentiment	+ 42- 6	+ 38- 28

Where to Buy

Cannondale Synapse 3

Price unavailableCheck prices

All-time low was $20 on 2026-01

~50 sold/month on Amazon

Specialized S-Works Tarmac SL8

Price unavailableCheck prices

All-time low price!

Prices may vary. We may earn a commission from purchases made through these links.

Cannondale Synapse 3Check prices Specialized S-Works Tarmac SL8Check prices

Frequently Asked Questions

Which is better, Cannondale Synapse 3 or Specialized S-Works Tarmac SL8?

Based on 211 Reddit comments, Cannondale Synapse 3 is the preferred choice with 83% positive sentiment vs Specialized S-Works Tarmac SL8's 63%. Cannondale Synapse 3 leads by 20 percentage points.

Should I buy Cannondale Synapse 3 or Specialized S-Works Tarmac SL8?

If you want the safer choice based on community sentiment, Cannondale Synapse 3 has stronger approval ratings (83% vs 63%). However, Specialized S-Works Tarmac SL8 may still be better depending on your specific needs, budget, or use case.

What do Redditors love about Cannondale Synapse 3?

Cannondale Synapse 3 has 98 mentions on Reddit with 83% positive sentiment. Users consistently recommend it based on real ownership experiences.

What do Redditors say about Specialized S-Works Tarmac SL8?

Reddit users highlight: Race bike. Ultra light. Aero. With 113 mentions and 63% approval, it remains a popular alternative.

How many Reddit reviews were analyzed?

This comparison analyzed 211 Reddit comments: 98 about Cannondale Synapse 3 and 113 about Specialized S-Works Tarmac SL8. Data was sourced from Which Bike community discussions.

How accurate are these ratings?

Our sentiment analysis is approximately 80-85% accurate compared to manual review. Well-discussed products with many mentions tend to have more reliable scores than niche items with fewer data points.

Why trust Reddit over professional reviews?

Reddit users bought products with their own money and have no incentive to mislead. You're seeing hundreds of real opinions across different use cases, not just one reviewer's take. This crowdsourced approach surfaces both common praise and recurring complaints.

114 Reddit opinions analyzed · Last updated 7/21/2026

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