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Description
R5 Force AXS (2025)R5 has one jobget to the top, fast. But for all the glory and fanfare that comes with a summit finish, theyre rarely the only climb of the day. And while a race isnt usually won on a descent, they can certainly be lost. A climbing bike that can't carve a hairpin is a bit like a cup of decaf coffee. This is the fourth iteration of the R5, and while weight and stiffness have varied over the years, the handling, poise, and unmatched prowess on a descent
R5 has one job—get to the top, fast. But for all the glory and fanfare that comes with a summit finish, they’re rarely the only climb of the day. And while a race isn’t usually won on a descent, they can certainly be lost. A climbing bike that can't carve a hairpin is a bit like a cup of decaf coffee. This is the fourth iteration of the R5, and while weight and stiffness have varied over the years, the handling, poise, and unmatched prowess on a descent have been consistent since day one.
FEATURES:
- Faster In Every Direction: The new R5 frame is 130g lighter than the previous model—a 16% reduction from an already-light frame. And while aerodynamics weren’t a focus with this frame the way they would be on an S5 or P5, bringing the cables inside reduced drag by 25g.
- Darker Than Night, Lighter Than Air: The color black may absorb all light, but Cervélo Five Black is anything but heavy. This ultra-minimal graphics and paint package results in a frame that’s significantly lighter—they’ll never even see you coming.
- Less Stiff, Still Fast: The R5 is stiff, but not too stiff—the Goldilocks of climbing bikes if you will. Poise, stability, and power transfer that feels “just right” and keeps you fresh and ready to take on the road ahead.
- Turbulent Aero: New to R5 this year is the Reserve 34 | 37 TA Wheelset. That TA stands for Turbulent Aero, a new way of thinking about aerodynamics. Reserve and Cervélo have developed a protocol by which we replicate real-world wind conditions, and develop airfoil shapes that perform better outside. This means a wheelset that’s not only light, stiff, and fast, but exceptionally stable and confidence inspiring in all wind conditions.
SPECS:
| Frame | R5 Carbon |
| Fork | Cervélo All-Carbon, Tapered R5 Fork |
| Rims/Wheels | [F] Reserve 34TA, Zipp ZR1 ST, 12x100mm, 24H centerlock, tubeless compatible [R] Reserve 37TA, Zipp ZR1 ST, 12x142mm, XDR freehub, 24H centerlock, tubeless compatible |
| Hubs | N/A |
| Spokes | N/A |
| Tires | Corsa Pro TLR blk-blk G2.0 OEM 700x26c |
| Crankset | SRAM Force AXS, DUB, with power meter |
| Chainrings | 48/35T |
| Bottom Bracket | SRAM DUB Ceramic, BBright |
| Chain | SRAM Force, 12 speed |
| Front Derailleur | SRAM Force AXS, 12 speed |
| Rear Derailleur | SRAM Force AXS, 12 speed |
|
Cassette/Rear Cogs
|
SRAM Force, 10-33, 12 Speed |
| Shifters | SRAM Force AXS, 12 speed |
| Handlebars | Cervélo HB13 Carbon, 31.8mm clamp |
| Stem | Cervélo ST31 Carbon |
| Brakes | SRAM Force w/ Paceline Centerlock |
| Pedals | Sold Separately |
| Saddle | Prologo Scratch M5 PAS TiRox |
| Seat Post | Cervélo SP24 Carbon |
| Extras | Cervélo Faceplate Front Computer/Accessory Mount, Cervélo Rear Accessory Mount |
Shipping Notes
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Exchange/Return Notes
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4.8 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Engaging Read for Beginners and Techies Alike
Format: Paperback
An engaging and accessible exploration of how computers really work. The author breaks down complex concepts into simple, relatable explanations, making topics like binary, logic gates, and basic circuits far less intimidating. For newcomers, it’s a great way to build a foundational understanding of computer theory with just a touch of electrical engineering.
As someone with a technical background, I still found it entertaining; the examples and analogies added fresh ways to frame ideas I already knew. It’s the kind of book that can bridge the gap between “I use computers” and “I understand what’s happening under the hood.”
Highly recommended for anyone curious about what makes hardware and software tick, whether you’re starting from scratch or just want a new perspective.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
★★★★★ 5
CODE is the book you should get.
Format: Paperback
The best book to enter the field. Grateful that Charles Petzold decided to write it, even happier this was one of the first books I picked up.
Recommend to everyone wanting to become a programmer, or just interested in computers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
If you only buy one technical computer book, this is it
Format: Paperback
Disclaimer: I owned the first edition for years and read it a dozen times, mainly for pleasure since it’s not only informative but also just enjoyable to read. I’m a professional software architect and have dozens of textbooks on computer science and engineering so I’ve been around the block.
This is the kind of book I would buy all for all my friends (if I had more than a couple) and family members (if they were even slightly into computers, which they aren’t sadly). Petzold does an exceptional job at describing digital logic and guides you through building a conceptual CPU from very first principles.
I think his bottom up approach is the way to go and has helped me understand complex topics in an extremely simple way. When I’m not reading fiction, this is my go to bedtime reading.
The second edition has about 100 more pages than the first and some content has been completely reworked and it’s great.
If you ever had even a passing interest in knowing how computers work at a very fundamental level, get this book!
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Reviewed in the United States on January 31, 2023
★★★★★ 4
First programmer?
Format: Paperback
As an ardent reader of the past 1st edition, I was fairly excited to get the latest version. That is, until I encountered the history chapter of the new edition.
For one thing, what I do NOT understand in this second edition is the newly added description of August Ada Byron (countless of Lovelace). The author claims it was Babbage who was the first programmer to design the engines, not Ada. I am not trying to start a futile argument here about who has more or fewer contributions, etc.
What I am trying to assert here is that it is undisputed that Ada (unless the new evidence arises) left *the very first demonstration* of what this seemingly imaginary machine, which didn't even physically exist, was capable of through her program. Because Babbage designed the engine itself, that doesn't automatically put him in the position of a programmer (despite Babbage being a brilliant engineer/scientist and may have had a simple or detailed program in his mind). However, it was Ada who gave a definite touch to programming concepts that ultimately led to modern-day programming. Ada deserves more recognition than a mere "tutorial writer," and she is certainly entitled to the title she deserves.
Other than that, like the previous edition, this book is a must-read for people who are from related/unrelated fields. I always loved the 1st edition, and I would do too with the 2nd. Still, I think history should always be approached with more care, particularly if matters have potential controversies.
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Reviewed in the United States on January 6, 2023
★★★★★ 5
One of the few books worth your time
Format: Paperback
If you want to learn computers, start here. Learning from a historical perspective removes complexity of trying to start with say GPUs - you learn just like computer engineers did, incrementally.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
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