When Cervélo releases a new R5, the question is never if it’s fast — it’s how much lighter, sharper, and more refined it’s become.
With the arrival of the 2026 Cervélo R5, built here at Cycle House in a stunning Five Black // Bronze finish and paired with SRAM’s latest Red E1 groupset, one question keeps coming up:
Is this the lightest Cervélo R5 ever produced?
Let’s break it down.
The Cervélo R5: A Benchmark in Lightweight Performance
Since its inception, the R5 has been Cervélo’s no-compromise climbing and all-round race platform. It’s a bike designed for riders who demand:
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Class-leading frame stiffness
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Ultra-low system weight
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Exceptional ride feel on long climbs and rough roads
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Proven WorldTour pedigree
The 2026 Cervélo R5 continues that legacy, refining every gram without sacrificing rigidity or control.
👉 Learn more about the R5 directly from Cervélo:
https://www.cervelo.com/en/r5
2026 Cervélo R5 – Build Overview
This particular build is a perfect example of how far lightweight road bikes have evolved — not just on the scales, but in real-world ride performance.
Frame
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2026 Cervélo R5
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Colour: Five Black // Bronze
Cervélo’s latest carbon lay-up pushes weight savings even further while maintaining their signature stiffness-to-weight ratio.
Groupset – SRAM Red E1
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Shifters & Brakes: SRAM Red E1
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Front Derailleur: SRAM Red E1
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Rear Derailleur: SRAM Red E1
SRAM Red E1 represents the lightest fully wireless electronic groupset SRAM has ever produced — a major contributor to the overall system weight of this build.
Drivetrain
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Crankset: SRAM Red AXS E1 Power Meter
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Spider DUB 165mm
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48–35 chainrings
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Cassette: SRAM Red E1 XG-1290 12-speed (10–36)
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Chain: SRAM Red 114L E1 Flattop w/ PowerLock
This gearing setup delivers exceptional climbing efficiency while still providing top-end speed for fast group rides and racing.
Cockpit
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Handlebar: Cervélo HB18 Carbon
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Stem: Integrated (as per above)
Clean, aerodynamic, and incredibly light — the HB18 cockpit complements the R5 perfectly.
Wheels & Tyres
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Wheelset: Reserve 42|49 TA
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DT Swiss 180 hubs
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DICUT SP
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CL XDR freehub
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Tyres: Vittoria Corsa Pro Fold / TLR Para G2
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30-622
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Reserve’s mixed-depth setup balances low weight with stability, while the Vittoria Corsa Pro tyres deliver class-leading grip and rolling efficiency.
Braking
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Rotors: SRAM Paceline X CL 160mm
Lightweight, quiet, and powerful — exactly what you want on a climbing-focused race bike.
Images: Custom built 2026 Cervelo R5, built by Cycle House in Greensborough
So… Is This the Lightest Cervélo R5 Ever?
While final weight depends on sizing and finishing kit, this 2026 Cervélo R5 build represents the lightest complete R5 configurations we’ve ever seen pass through Cycle House.
Key reasons:
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Updated R5 frame platform
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SRAM Red E1’s reduced system weight
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Reserve DT180 wheelset
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Fully integrated carbon cockpit
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Modern lightweight tubeless tyre setup
The result is a bike that climbs effortlessly, accelerates instantly, and still feels planted on high-speed descents.
The Verdict
The 2026 Cervélo R5 isn’t just lighter — it’s smarter, faster, and more refined than ever before.
If you’re chasing:
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Ultimate climbing performance
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A true race-day weapon
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Or simply the most advanced R5 Cervélo has ever produced
This bike sets a new benchmark.
Want to build your own Cervélo R5?
Come and chat with the team at Cycle House. We specialise in premium custom builds, precision bike fitting, and performance-focused setups tailored to how you ride.
👉 Explore the R5 range at Cervélo:
https://www.cervelo.com/en/r5