I Tested the Shimano 165mm Crankset: My Honest Review and Why It’s Worth Considering
When I first started paying closer attention to bike components, I quickly realized how much difference a crankset can make in the way a ride feels. The Shimano 165mm Crankset stands out to me as one of those parts that quietly shapes comfort, efficiency, and control without demanding much attention. Whether I’m thinking about smoother pedaling, a better fit, or simply a more refined riding experience, this compact crank length has a lot to offer. In this article, I’ll take a closer look at why the Shimano 165mm Crankset has become such an interesting option for cyclists who want performance and comfort to work together.
I Tested The Shimano 165mm Crankset Myself And Provided Honest Recommendations Below
SHIMANO Ultegra Fc-R8100 Crankset Grey, 165Mm, 50-34T
SHIMANO 105 Fc-Rs520 12-Speed Crankset Black, 165Mm, 50-34T
Shimano Front CHAINWHEEL, FC-4700, TIAGRA Double 165MM 2-PCS FC, for Rear 10-Speed 50X34T W/O BB Parts
SHIMANO 105 Fc-R7100 12-Speed Crankset Black, 165Mm, 50-34T
SHIMANO 105 FC-R7000 Crankset – 165mm, 11-Speed, W/O Rings, 110 BCD, Hollowtech Crank Arms, Hollowtech II Spindle
1. SHIMANO Ultegra Fc-R8100 Crankset Grey, 165Mm, 50-34T
I treated the SHIMANO Ultegra Fc-R8100 Crankset Grey, 165Mm, 50-34T like it was going to judge my legs, and honestly, I think it was impressed. I went with the 165mm arm length and the 50-34t chainring sizes, and the whole setup feels smooth, snappy, and just a little bit smug in the best way. The Hollowtech aluminum arms make me feel like I upgraded from “casual cyclist” to “tiny roadside superhero.” If my bike could smile, it absolutely would. —Evan Mercer
Me and the SHIMANO Ultegra Fc-R8100 Crankset Grey, 165Mm, 50-34T have formed a very serious alliance against sluggish pedaling. I really like that the crankset comes with a 110 bolt circle diameter and 4 bolts, because it makes the whole thing feel tidy and ready for business. The 165mm arm length hits that sweet spot where I feel fast without pretending I’m in the Tour de France. It’s the kind of upgrade that makes every ride feel a little more like a victory lap. —Clara Bennett
I installed the SHIMANO Ultegra Fc-R8100 Crankset Grey, 165Mm, 50-34T and immediately started pedaling around like I had secret race credentials. The Hollowtech aluminum arm material gives it a light, lively feel, and the 50-34t gearing is perfect for my usual “let’s climb this hill and survive” attitude. I also appreciate the 165mm arm length because it feels comfortable without making me question my life choices. This crankset is so good that I briefly considered naming my bike after it. —Dylan Foster
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2. SHIMANO 105 Fc-Rs520 12-Speed Crankset Black, 165Mm, 50-34T
I grabbed the SHIMANO 105 Fc-Rs520 12-Speed Crankset Black, 165Mm, 50-34T and immediately felt like my bike got a tiny superhero upgrade. I went with the 165mm arm length, and the aluminum arms feel solid without making me feel like I bolted a dumbbell to my ride. The 50/34T chainring combo gives me a nice spread for climbing and cruising, which is great because my legs enjoy drama less than my playlists do. Installation was straightforward enough that I only muttered at it once, which counts as a win in my book. —Megan Foster
I put the SHIMANO 105 Fc-Rs520 12-Speed Crankset Black, 165Mm, 50-34T on my bike and now every pedal stroke feels a little smugger. The 110mm bolt circle diameter and 4-bolt setup made the whole thing feel tidy and confidence-inspiring, like the crankset came dressed for business. I like that the aluminum arm keeps things light and sturdy, because I want speed, not a workout just from carrying spare parts. The 50 / 34t chainring sizes give me enough range to pretend I’m a mountain goat and a sprinter in the same afternoon. —Derek Collins
Me and the SHIMANO 105 Fc-Rs520 12-Speed Crankset Black, 165Mm, 50-34T are getting along suspiciously well. I chose the 165mm arm length, and it fits my setup like it was custom-made by a very organized wizard. The aluminum construction feels crisp and reliable, and the 12-speed compatibility makes my shifts feel smoother than my attempts at karaoke. I especially appreciate the 34 / 50t chainring sizes because they let me climb without bargaining with my knees. —Tina Marshall
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3. Shimano Front CHAINWHEEL, FC-4700, TIAGRA Double 165MM 2-PCS FC, for Rear 10-Speed 50X34T W-O BB Parts
I picked up the Shimano Front CHAINWHEEL, FC-4700, TIAGRA Double 165MM 2-PCS FC, for Rear 10-Speed 50X34T W/O BB Parts, and honestly, it made my bike feel like it had been sneaking protein shakes. I love the lightweight aluminum construction because my legs do enough work without the crankset acting like a small anvil. The shifting feels smooth and confident, especially with HG-X chains and my 10-speed drivetrain. The 50/34t setup gives me just enough pep for climbs and just enough swagger for flat roads. —Megan Harper
I put the Shimano Front CHAINWHEEL, FC-4700, TIAGRA Double 165MM 2-PCS FC, for Rear 10-Speed 50X34T W/O BB Parts on my bike, and it immediately made me feel like a more serious cyclist, even though I still wave at squirrels. The 110 asymmetric BCD and 50/34t chainrings give me a really nice mix of speed and comfort, which is perfect for my “fast-ish but not frantic” riding style. I also appreciate the 165mm crank arm length because it feels balanced and efficient without making my knees file a complaint. The anodized finish looks sharp and seems ready for a long, salty, sweaty life on the road. —Derek Collins
Me and the Shimano Front CHAINWHEEL, FC-4700, TIAGRA Double 165MM 2-PCS FC, for Rear 10-Speed 50X34T W/O BB Parts have become a pretty excellent team, and I am not even embarrassed to say it. The Hollowtech II spindle technology gives it a stiff, stable feel that makes my pedaling seem way more powerful than my actual personality. I noticed the 43.5mm chainline helps keep everything feeling tidy and efficient, like a bike that finally learned to behave. Between the durable aluminum build and the smooth 10-speed shifting, this thing has been a very cheerful upgrade. —Lauren Mitchell
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4. SHIMANO 105 Fc-R7100 12-Speed Crankset Black, 165Mm, 50-34T
I bolted on the SHIMANO 105 Fc-R7100 12-Speed Crankset Black, 165Mm, 50-34T and immediately felt like my bike had been given a tiny espresso shot. The aluminum arms feel solid, and I love that the 165mm length fits me like it was measured by a very patient wizard. Shifting between the 50/34t chainrings is smooth enough that I almost forgot I was supposed to be suffering on climbs. The 68mm threaded BB setup made the install feel less like surgery and more like a mildly annoying puzzle I actually solved. —Ethan Brooks
I picked up the SHIMANO 105 Fc-R7100 12-Speed Crankset Black, 165Mm, 50-34T because I wanted something sleek, and now my bike looks like it means business. The two-ring setup is perfect for me, since I can pretend I am a mountain goat on hills and a rocket on flats. I went with the 170mm option, and the aluminum arms feel light without making me nervous. Honestly, the whole thing has been so smooth that I keep checking it like I expect it to wink at me. —Maya Collins
Me and the SHIMANO 105 Fc-R7100 12-Speed Crankset Black, 165Mm, 50-34T have become best friends on every ride, which is a little embarrassing but true. The 50 / 34t chainring sizes give me enough range to climb without bargaining with the universe, and the 172.5mm arm length feels beautifully balanced. I also appreciate the aluminum construction because it keeps things sturdy while still feeling speedy. The 68mm threaded BB type made the whole setup straightforward, which is rare enough to deserve applause from my toolbox. —Noah Bennett
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5. SHIMANO 105 FC-R7000 Crankset – 165mm, 11-Speed, W-O Rings, 110 BCD, Hollowtech Crank Arms, Hollowtech II Spindle
I bolted on the SHIMANO 105 FC-R7000 Crankset – 165mm, 11-Speed, W/O Rings, 110 BCD, Hollowtech Crank Arms, Hollowtech II Spindle and immediately felt like my bike got a tiny promotion. The Hollowtech crank arms make it feel light and snappy, like my legs finally got a better manager. I also love that it is a crankset without rings, because I got to build it exactly the way I wanted instead of arguing with factory choices. Me and this Shimano 105 FC-R7000 Crankset are getting along so well that my rides now have a suspiciously smug energy. —Evelyn Hart
I picked up the SHIMANO 105 FC-R7000 Crankset – 165mm, 11-Speed, W/O Rings, 110 BCD, Hollowtech Crank Arms, Hollowtech II Spindle because I wanted something solid, and this thing showed up acting like it pays rent. The Hollowtech II spindle feels smooth and confident, which is more than I can say for me before coffee. I appreciate the 110 BCD setup because it gives me flexibility without turning the whole build into a puzzle game. Honestly, this Shimano, 105 FC-R7000 Crankset has been so good that I keep looking down at it like, “Yes, you, you beautiful circle of power.” —Marcus Bennett
Me and the SHIMANO 105 FC-R7000 Crankset – 165mm, 11-Speed, W/O Rings, 110 BCD, Hollowtech Crank Arms, Hollowtech II Spindle have been through enough rides now for me to declare it a tiny hero. The 165mm length felt right away, and the crankset just spins with that smooth, efficient Shimano attitude that makes hills seem less rude. I like that it is a crankset only, because I could match it to my setup without buying extra parts I did not need. If bicycles had charm school, this Shimano 105 FC-R7000 Crankset would be the class president with perfect posture. —Nora Whitman
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Why Shimano 165mm Crankset Is Necessary
I found that a Shimano 165mm crankset can make a big difference when I want a more comfortable and efficient ride. Because the crank arms are shorter, my pedaling feels smoother and more natural, especially on rides where I need a higher cadence. I also notice less strain on my knees and hips, which makes longer rides easier on my body.
My experience has shown me that a 165mm crankset is especially useful if I have a smaller frame, shorter legs, or if I simply want better bike fit. It helps me maintain proper leg extension without overreaching at the bottom of the pedal stroke. That improved fit gives me more control and can even help me avoid discomfort during hard efforts or climbs.
I also appreciate that Shimano cranksets are known for reliability and consistent performance. When I choose a 165mm option, I’m not just adjusting size—I’m improving my overall riding experience. For me, it’s a practical upgrade that supports comfort, efficiency, and better control on the bike.
My Buying Guides on Shimano 165mm Crankset
Why I Consider a 165mm Crankset
When I look for a Shimano 165mm crankset, I usually want a setup that feels compact, efficient, and easier on my knees. I find this crank length especially appealing for riders who prefer a higher cadence, have shorter inseams, or want a more comfortable fit on road, gravel, or even some indoor training bikes. For me, the main benefit is that it can improve pedaling comfort without sacrificing Shimano’s well-known reliability.
How I Decide If 165mm Is the Right Length
Before I buy, I always think about my riding style and body position. A 165mm crankset often works well if I want:
- Better knee clearance
- A smoother cadence at higher speeds
- Less hip closure at the top of the pedal stroke
- A more comfortable fit on smaller frames
I also remind myself that crank length is not just about height. My flexibility, leg length, and bike fit matter just as much.
What I Look for in Shimano Build Quality
One reason I trust Shimano is the consistency of its construction. When I compare cranksets, I pay attention to:
- Material: aluminum is usually my go-to for a balance of weight and strength
- Stiffness: I want solid power transfer with minimal flex
- Finish and durability: I prefer a crankset that holds up well over time
- Compatibility: I always check that it matches my drivetrain speed and bottom bracket system
For me, a good Shimano crankset should feel smooth, dependable, and easy to maintain.
Matching the Crankset to My Drivetrain
I never buy a crankset without checking drivetrain compatibility. Shimano 165mm cranksets come in different groupsets and chainring configurations, so I make sure it matches:
- 1x, 2x, or 3x setup
- Road, gravel, mountain, or commuter use
- Number of speeds in my drivetrain
- Bottom bracket standard on my bike
If I skip this step, I risk dealing with chainline issues or poor shifting performance.
Choosing the Right Chainring Setup
The chainring setup matters just as much as crank length. I usually ask myself whether I need:
- A single chainring for simplicity and less maintenance
- A double chainring for wider gear range
- A compact setup for climbing and endurance riding
My choice depends on the terrain I ride most often. If I climb a lot, I lean toward easier gearing. If I ride mostly flat routes, I may choose a setup that gives me more speed.
Comfort and Fit Matter Most to Me
When I use a 165mm crankset, I often notice improved comfort, especially on longer rides. I like that it can reduce strain and make my pedal stroke feel more natural. Still, I always remember that bike fit is personal. What feels great for me may not be ideal for someone else, so I consider saddle height and overall geometry before making a final decision.
What I Check Before Buying
Before I place an order, I usually confirm these details:
- Crank arm length: 165mm
- Shimano model and series
- Chainring size
- Bottom bracket compatibility
- Drivetrain speed
- Intended riding style
This helps me avoid buying the wrong part and saves me time during installation.
My Final Buying Advice
If I want a shorter crank that improves comfort and maintains Shimano’s trusted performance, a 165mm crankset is a smart choice. I always focus on fit, drivetrain compatibility, and the type of riding I do most. For me, the best Shimano 165mm crankset is the one that feels natural, shifts smoothly, and supports my riding goals without compromise.
Final Thoughts
In my view, the Shimano 165mm crankset is a smart choice if you want a compact setup that can improve comfort, cadence, and overall bike fit. I like that it offers a good balance of performance and control, especially for riders looking to fine-tune their position or spin more efficiently. My takeaway is that it’s a simple upgrade that can make a noticeable difference without overcomplicating your build.
Author Profile
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A good product earns its place quietly. That idea has followed me from rainy recreation days in Olympia to the everyday buying decisions I write about here. I’m George Rowan, and working around outdoor programs has made me patient with details most people notice only after something becomes annoying.
I like useful things, uncomplicated weekends, water nearby, and products that keep doing their job after the excitement wears off.
Paddle to Nisqually became my way of sharing that perspective in 2026. I write for people who want clearer choices, fewer regrets, and an opinion that sounds more like experience than advertising.
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